Okanogan Public Utility District No. 1 of Okanogan County, WA; Notice of Availability of Draft Environmental Assessment, 28506-28621 [2011-11757]
Download as PDF
28506
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
DEPARTMENT OF ENERGY
Federal Energy Regulatory
Commission
[Project No. 12569–001]
Okanogan Public Utility District No. 1
of Okanogan County, WA; Notice of
Availability of Draft Environmental
Assessment
sroberts on DSK69SOYB1PROD with NOTICES
In accordance with the National
Environmental Policy Act of 1969 and
the Federal Energy Regulatory
Commission’s (Commission or FERC’s)
regulations, 18 Code of Federal
Regulations (CFR) Part 380 (Order No.
486, 52 Federal Register [FR] 47897),
the Office of Energy Projects has
reviewed Okanogan Public Utility
District No. 1 of Okanogan County’s
(Okanogan PUD) application for license
for the Enloe Hydroelectric Project
(FERC Project No. 12569), located on the
Similkameen River near the city of
Oroville in Okanogan County,
Washington. Part of the project would
occupy a total of 35.47 acres of federal
lands administered by the U.S. Bureau
of Land Management.
Staff prepared this draft
environmental assessment (EA), which
analyzes the potential environmental
effects of relicensing the project, and
concludes that licensing the project,
with appropriate environmental
protective measures, would not
constitute a major federal action that
would significantly affect the quality of
the human environment.
A copy of the draft EA is available for
review at the Commission in the Public
Reference Room or may be viewed on
the Commission’s Web site at https://
www.ferc.gov using the ‘‘eLibrary’’ link.
Enter the docket number excluding the
last three digits in the docket number
field to access the document. For
assistance, contact FERC Online
Support at
FERCOnlineSupport@ferc.gov or tollfree at 1–866–208–3676, or for TTY,
202–502–8659.
You may also register online at https://
www.ferc.gov/docs-filing/
esubscription.asp to be notified via email of new filings and issuances
related to this or other pending projects.
For assistance, contact FERC Online
Support.
Any comments should be filed within
30 days from the date of this notice.
Comments may be filed electronically
via the Internet. See 18 CFR
385.2001(a)(1)(iii) and the instructions
on the Commission’s Web site https://
www.ferc.gov/docs-filing/efiling.asp.
Commenters can submit brief comments
up to 6,000 characters, without prior
registration, using the eComment system
at https://www.ferc.gov/docs-filing/
ecomment.asp. You must include your
name and contact information at the end
of your comments. For assistance,
please contact FERC Online Support.
Although the Commission strongly
encourages electronic filing, documents
may also be paper-filed. To paper-file,
mail an original and seven copies to:
Kimberly D. Bose, Secretary, Federal
Energy Regulatory Commission, 888
First Street, NE., Washington, DC 20426.
For further information, contact Kim
Nguyen by telephone at (202) 502–6105,
or by e-mail at kim.nguyen@ferc.gov.
Dated: May 9, 2011.
Kimberly D. Bose,
Secretary.
Environmental Assessment for
Hydropower License
Enloe Hydroelectric Project—FERC
Project No. 12569—Washington
Federal Energy Regulatory Commission,
Office of Energy Projects, Division of
Hydropower Licensing, 888 First Street,
NE., Washington, DC 20426
[May 2011]
Table of Contents
List of Figures
List of Tables
Acronyms and Abbreviations
Executive Summary
1.0 Introduction
1.1 Application
1.2 Purpose of Action and Need for Power
1.2.1 Purpose of Action
1.2.2 Need for Power
1.3 Statutory and Regulatory Requirements
1.3.1 Federal Power Act
1.3.1.1 Section 18 Fishway Prescriptions
1.3.1.2 Section 4(e) Conditions
1.3.1.3 Section 10(j) Recommendations
1.3.2 Clean Water Act
1.3.3 Endangered Species Act
1.3.4 Coastal Zone Management Act
1.3.5 National Historic Preservation Act
1.3.6 Pacific Northwest Power Planning and Conservation Act
1.3.7 Magnuson-Stevens Fishery Conservation and Management Act
1.4 Public Review and Consultation
1.4.1 Scoping
1.4.2 Interventions
1.4.3 Comments on the License Application
2.0 Proposed Action and Alternatives
2.1 No-Action Alternative
2.2 Applicant’s Proposal
2.2.1 Proposed Project Facilities
2.2.2 Project Safety
2.2.3 Proposed Project Operation
2.2.4 Proposed Environmental Measures
2.2.5 Modifications to Applicant’s Proposal—Mandatory Conditions
2.3 Staff Alternative
2.4 Staff Alternative With Mandatory Conditions
2.5 Removal of Existing Hydroelectric Facilities Including Enloe Dam
3.0 Environmental Analysis
3.1 General Description of the River Basin
3.2 Scope of Cumulative Effects Analysis
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00002
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
4.0
5.0
6.0
7.0
8.0
3.2.1 Geographic Scope
3.2.2 Temporal Scope
3.3 Proposed Action and Action Alternatives
3.3.1 Geologic and Soil Resources
3.3.1.1 Affected Environment
3.3.1.2 Environmental Effects
3.3.2 Water Quantity and Quality
3.3.2.1 Affected Environment
3.3.2.2 Environmental Effects
3.3.2.3 Cumulative Effects
3.3.3 Aquatic Resources
3.3.3.1 Affected Environment
3.3.3.2 Environmental Effects
3.3.3.3 Cumulative Effects
3.3.4 Terrestrial Resources
3.3.4.1 Affected Environment
3.3.4.2 Environmental Effects
3.3.5 Threatened and Endangered Species
3.3.5.1 Affected Environment
3.3.5.2 Environmental Effects
3.3.6 Recreation and Land Use
3.3.6.1 Affected Environment
3.3.6.2 Environmental Effects
3.3.7 Aesthetic Resources
3.3.7.1 Affected Environment
3.3.7.2 Environmental Effects
3.3.8 Cultural Resources
3.3.8.1 Affected Environment
3.3.8.2 Environmental Effects
3.3.9 Socioeconomics
3.3.9.1 Affected Environment
3.3.9.2 Environmental Effects
3.4 No-Action Alternative
Developmental Analysis
4.1 Power and Economic Benefits of the Project
4.2 Comparison of Alternatives
4.2.1 No-Action Alternative
4.2.2 Okanogan PUD’s Proposal
4.2.3 Staff Alternative
4.3 Cost of Environmental Measures
Conclusions and Recommendations
5.1 Comparison of Alternatives
5.2 Comprehensive Development and Recommended Alternative
5.3 Unavoidable Adverse Effects
5.4 Fish and Wildlife Agency Recommendations
5.5 Consistency With Comprehensive Plans
Finding of No Significant Impact
Literature Cited
List of Preparers
sroberts on DSK69SOYB1PROD with NOTICES
List of Figures
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
1. Location of the Enloe Hydroelectric Project
2. Daily maximum temperatures at the 2006 monitoring locations
3. 7-DADMax temperatures in the lower end of the Enloe reservoir (RM 9.1) and at the upper end of the reservoir (RM 10.3)
4. Plunge pool below Similkameen Falls
5. Recreation facilities in the Enloe Project area
6. Land ownership in the Enloe Project area
7. Roads, gates, and spurs in the project area
8. Location of proposed fencing downstream of Enloe dam
9. Enloe Project recreation site schematic
10. Enloe Project area KOPs
11. KOP 1, Loomis-Oroville Road
12. KOP 2, overlook from Loomis-Oroville Road approximately 3 miles north of Oroville
13. KOP 3, rocks below Enloe dam on the Similkameen River
14. KOP 4, overlook near Enloe dam
15. KOP 5, overlook east of Enloe dam, looking south
16. KOP 6, view from proposed interpretive panel #1, looking north
17. KOP 7, view from interpretive panel #2, looking north
List of Tables
Table 1. Major Statutory and Regulatory Requirements for the Enloe Hydroelectric Project
Table 2. Summary of Similkameen River Flows at the USGS Nighthawk Gage No. 12442500, 1929–2005
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00003
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
28507
28508
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
Table 3. Similkameen River Water Rights
Table 4. Enloe Reservoir Characteristics at Existing and Proposed Operations and Spills
Table 5. Summary of Total Dissolved Gas Measurements Near Enloe Dam From May 26–30, 2006
Table 6. Summary of Preliminary Enloe Dam Sediment Trace Metals Results
Table 7. Summary of Preliminary Enloe Dam Sediment Elutriate Results
Table 8. Simulated Average Annual Tailrace Flow for Three Normal and Three Wet Water Years
Table 9. Native and Non-Native Fishes in the Similkameen River Based on Snorkel Surveys
Table 10. Numbers and Percent Composition of Native and Non-Native Fishes in the River Downstream of Enloe Dam Based on Snorkel
Surveys
Table 11. Numbers and Percent Composition of Native and Non-Native Fishes in the Reservoir Upstream of Enloe Dam
Table 12. Aquatic Benthic Macroinvertebrate Taxa Found in the Similkameen River above Enloe Reservoir
Table 13. Proposed Ramping Rates
Table 14. Estimate of User Days by Month for the Project Area
Table 15. Estimate of User Days by Type of Day for the Project Area
Table 17. Land Ownership Within the Proposed Enloe Project Boundary
Table 18. Archaeological and Historic Resources Within or Directly Adjacent to the Enloe Project Boundary APE
Table 19. Population Characteristics of the City of Oroville, Okanogan County, and Washington
Table 20. Parameters for the Economic Analysis of the Enloe Hydroelectric Project
Table 21. Summary of Annual Cost of Alternative Power and Annual Project Cost for the Alternatives for the Enloe Hydroelectric Project
Table 22. Cost of Environmental Mitigation and Enhancement Measures Considered in Assessing the Environmental Effects of Constructing and Operating the Proposed Enloe Hydroelectric Project
Table 23. Summary of Key Differences in the Potential Effects of Okanogan PUD’s Proposal and the Staff Alternative
Table 24. Fish and Wildlife Agency Recommendations for the Enloe Hydroelectric Project
sroberts on DSK69SOYB1PROD with NOTICES
Acronyms and Abbreviations
μg microgram
AHS Archaeological and Historical Services
APE area of potential effect
BLM U.S. Bureau of Land Management
BMP best management practice
°C degrees Celsius
cfs cubic feet per second
Colville Confederated Tribes of the Colville
Reservation
Commission Federal Energy Regulatory
Commission
CSMP Construction Sediment Management
Program
Corps U.S. Army Corps of Engineers
CRITFC Columbia River Inter-tribal Fish
Commission
CRWG Cultural Resources Working Group
CWA Clean Water Act
dB decibel
DO dissolved oxygen
EA environmental assessment
EFH essential fish habitat
Enloe Project or project Enloe Hydroelectric
Project
ESCP Erosion and Sediment Control Plan
ESA Endangered Species Act
FERC Federal Energy Regulatory
Commission
FPA Federal Power Act
FTE full-time equivalent
FWS U.S. Department of the Interior, Fish
and Wildlife Service
g the acceleration due to gravity (32.2 feet
per second2)
GWh gigawatt-hour
HAER Historic American Engineering
Record
HPMP Historic Properties Management
Plan
Interior U.S. Department of the Interior
kg kilogram
kV kilovolt
KOP key observation point
L liter
mg milligram
mm millimeter
Ministry of Environment British Columbia
Ministry of Environment
msl mean sea level
MW megawatt
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
MWh megawatt-hour
National Register National Register of
Historic Places
NERC North American Electric Reliability
Council
NHPA National Historic Preservation Act of
1966
NMFS National Marine Fisheries Service
Okanogan PUD Public Utility District No. 1
of Okanogan County
Okanogan Shoreline Program Okanogan
County’s Shoreline Master Program
OTID Oroville-Tonasket Irrigation District
PA Programmatic Agreement
Park Service National Park Service
Reclamation U.S. Bureau of Reclamation
RM river mile
SCORP State Comprehensive Outdoor
Recreation Plan
SD1 Scoping Document 1
SD2 Scoping Document 2
Scenic Trail Pacific Northwest National
Scenic Trail
State Parks Commission Washington State
Parks and Recreation Commission
TCP traditional cultural property
TDG total dissolved gas
TMDL total maximum daily load
UCR Upper Columbia River
USGS U.S. Geological Survey
Vegetation Plan Vegetation Mitigation and
Monitoring Plan
Washington DFW Washington Department
of Fish and Wildlife
Washington DNR Washington Department
of Natural Resources
Washington DOE Washington Department
of Ecology
Washington PC Washington Parks
Commission
Washington RCO Washington Recreation
and Conservation Office
Washington SHPO State Historic
Preservation Office
Water Trail Committee Greater Columbia
Water Trail Steering Committee
WSMA Washington State’s Shoreline
Management Act of 1971
PO 00000
Frm 00004
Fmt 4701
Sfmt 4703
Executive Summary
Proposed Action
On August 22, 2008, the Public Utility
District No. 1 of Okanogan County,
Washington (Okanogan PUD) filed an
application seeking a license with the
Federal Energy Regulatory Commission
(Commission or FERC) for the proposed
9.0-megawatt (MW) Enloe Hydroelectric
Project (Enloe Project or project) to be
located on the Similkameen River near
Oroville in Okanogan County,
Washington. The project would occupy
35.47 acres of federal lands
administered by U.S. Bureau of Land
Management (BLM).
Project Description and Proposed
Facilities
The Enloe dam and development was
originally constructed for hydroelectric
generation between 1919 and 1923. The
project operated from 1923 to 1958
when it was decommissioned. The
original project included an intake,
penstock, and powerhouse located 850
feet downstream of the dam on the west
bank of the Similkameen River. On
September 13, 1996, the Commission
issued an order to Okanogan PUD to
redevelop the Enloe Project using the
existing dam and rehabilitating the
original intake, penstock, and
powerhouse. However, on February 23,
2000, that order was rescinded.
Okanogan PUD proposes again to
redevelop the Enloe Project by using the
existing concrete gravity arch dam
impounding a 76.6-acre reservoir, and
constructing a new penstock intake
structure and above-ground steel
penstocks carrying flows from the intake
to the new powerhouse located 370 feet
downstream of the dam on the east bank
of the Similkameen River. The existing
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
discharges to and circulates water in the
plunge pool downstream of the falls,
preventing stagnation and consequently
water quality degradation of the pool
habitat;
Æ Provide aeration in the powerhouse
draft tubes to maintain dissolved oxygen
(DO) levels; and
Æ Monitor water quality, including
water temperatures, DO, and total
dissolved gases (TDG) in the tailrace for
a five-year period.
• For aquatic resources:
Æ Ensure that logs and woody debris
can pass over the dam and transporting
large debris off-site if needed;
Æ Place two clusters of boulders in
the Similkameen River upstream of the
reservoir to improve mountain whitefish
habitat and recreational fisheries;
Æ Include trashracks with 1-inch bar
spacing on the project intake(s) so that
Proposed Environmental Measures
smaller fish would be able to pass safely
Okanogan PUD proposes the
through the trashrack and larger fish
following environmental measures to
would be discouraged or prevented from
protect, mitigate, and enhance water
passing through the trashracks and
quality, aquatic, terrestrial, recreation,
turbines;
aesthetic, and cultural resources during
Æ Design and place the tailrace to
construction and operation of the
avoid effects on fish;
project.
Æ Install and monitor entrainment
During construction:
and mortality of fish at the tailrace
• Implement a Construction Sediment barrier nets;
Management Program (CSMP), an
Æ Operate run-of-river and
Erosion and Sediment Control Plan
implementing agency-recommended
(ESCP), and a Spill Plan;
ramping rates downstream of the project
• Implement a Blasting Plan;
during project start-up and shut-down;
• Employ best management practices
Æ Improve spawning, rearing, and
(BMPs) including flagging and fencing
summer thermal refugia downstream of
wetland areas;
the powerhouse tailrace in an existing
• Provide biological monitoring;
side channel;
• Implement a Noxious Weed Control
Æ Supplement gravel in the river
Program;
reach downstream of the tailrace to
• Survey disposal sites and control
increase the amount of gravel in the
noxious weeds prior to spoil disposal;
river downstream of Enloe dam and
• Revegetate spoil disposal sites;
improve spawning habitat;
• Schedule construction activities in
Æ Develop and implement a
the summer and early fall to minimize
biological review process including the
effects on overwintering birds and bald
establishment of a Technical Review
eagles;
Group (TRG) comprising agencies and
• Conduct pre-disposal site surveys
the Confederated Tribes of the Colville
for wildlife and schedule vegetation
Reservation (Colville); and
clearing to avoid wildlife conflicts;
Æ Develop a fish monitoring database
• Survey for Ute ladies-tresses prior
for organizing and storing monitoring
to, during, and postconstruction to
data related to aquatic resources for all
identify locations and avoid effects;
proposed studies.
• Monitor and avoid known
• For terrestrial resources, design the
archaeological sites listed in the
project transmission line to minimize
National Register of Historic Places
effects on raptors and other birds and
(National Register) during construction
implement a Vegetation Plan that
of project facilities; and
includes:
• Develop and implement a Safety
Æ Returning the abandoned shoreline
During Construction Plan and limit
road to natural conditions;
public access.
Æ Planting riparian vegetation along
During project operation:
the abandoned road and along and
• For water quality:
upstream of the east and west banks of
Æ Design and place the intake
the reservoir;
structure and channel to minimize
Æ Installing grazing control measures;
Æ Monitoring restored areas and
sediment transport;
planting additional willows if needed;
Æ Place the powerhouse tailrace
and
below Similkameen Falls so that it
sroberts on DSK69SOYB1PROD with NOTICES
dam crest elevation of 1,044.3 feet
would be increased by installing new
5-foot-high crest gates which would
increase the reservoir to 1,049.3 feet
elevation and the surface area to 88.3
acres. The powerhouse would contain
two vertical Kaplan turbine/generator
units with a total installed capacity of
9.0 MW. The project would also include
a substation adjacent to the powerhouse,
and a 100-foot-long, 13.2-kilovolt
primary transmission line connecting
the substation to an existing distribution
line. The project would also include
about 1.5 miles of new and upgraded
access roads. The Enloe Project would
operate automatically in a run-of-river
mode, with a normal operating water
level of the reservoir between 1,048.3
and 1,049.3 feet mean sea level.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00005
Fmt 4701
Sfmt 4703
28509
Æ Developing an environmental
training program to inform employees
about sensitive habitats.
• For recreation resources, implement
a Recreation Management Plan that
includes:
Æ Installing barricades, fencing, and a
stock watering tank as part of the Fence
Plan;
Æ Providing public access
downstream of Enloe dam on the east
bank;
Æ Transferring ownership rights of
the trestle bridge to Okanogan County
for the development of a future public,
non-motorized, recreational use trail;
Æ Improving the existing informal
boat ramp upstream of Enloe dam;
Æ Restoring the wooded area on the
east bank and conducting annual
cleanup activities of the wooded area
and along the Ditch Road;
Æ Developing an interpretive
publication, including a map illustrating
public access and recreation sites;
Æ Developing interpretive displays by
placing an information board near Enloe
dam; and interpretive signage near the
parking, picnic area, and near the access
bridge to the abandoned powerhouse;
Æ Removing existing trash and
conducting annual cleanup;
Æ Providing parking, picnic tables,
primitive campsites, and a vault toilet
on the east bank upstream of Enloe dam;
Æ Maintaining existing signage, safety
cables, and grab ropes upstream of the
dam;
Æ Installing safety and warning signs
and a log boom across the channel to
protect boaters; and
Æ Coordinating with BLM and other
landowners on how to prevent public
access to the old powerhouse.
• For aesthetic resources, implement
an Aesthetics Management Plan that
includes:
Æ Using visually-compatible colors
and building materials for facilities
along the east bank;
Æ Consulting with the Colville and
other stakeholders regarding restoration;
Æ Using non-reflective surfaces where
possible during construction; and
Æ Grading and repairing slopes with
native plants following removal of
buildings.
• For cultural resources, finalize a
draft May 2009 Historic Properties
Management Plan (HPMP) that includes:
Æ Soliciting for a new owner of the
historic Enloe powerhouse, and failing
that, demolishing the structure and
providing interpretive signage using
visually-compatible colors and building
materials for facilities along the east
bank;
Æ Reviewing and reaching agreement
on the HPMP and incorporating
E:\FR\FM\17MYN2.SGM
17MYN2
28510
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
information into a Programmatic
Agreement (PA);
Æ Monitoring effects of shoreline
fluctuation on archaeological sites in
shoreline areas and mitigating, as
needed;
Æ Determining if there would be
effects on archaeological sites around
project recreation areas; and
Æ Developing an inadvertent
discovery plan.
On October 28, 2010, Okanogan PUD
filed additional information regarding
ongoing consultations with Washington
Department of Ecology (Washington
DOE) and Washington Department of
Fish and Wildlife (Washington DFW) for
the 401 Water Quality Certification
process. In this filing, Okanogan and
Washington DFW and DOE have
developed the following understanding
with regards to the bypassed reach:
• Providing 30 cubic feet per second
(cfs) minimum flows from mid-July to
mid-September, and 10 cfs rest of the
year to the pool in the bypassed reach;
• Monitoring DO and water
temperature in the bypassed reach;
• Initiating an adaptive management
program to enhance DO and monitor
water temperature in the bypassed reach
if water quality standards are not met;
• Providing downramping rates in the
bypassed reach; and
• Determining means and withdrawal
location for minimum flows released to
the bypassed reach.
Alternatives Considered
This draft environmental assessment
(EA) considers the following
alternatives: (1) No-action—the project
would not be constructed and there
would be no changes or enhancements
at the site; (2) Okanogan PUD’s
proposal—as outlined above; and (3) a
staff alternative—Okanogan PUD’s
proposal with staff’s additions and
modifications.
Under the staff alternative, the project
would include Okanogan PUD’s
proposed measures, as outlined above,
with the exception of placing boulder
clusters in the project forebay and
entrainment and resident fish
monitoring. In addition, the staff
alternative would include: (1) A Spoil
Disposal Plan; (2) a water quality
monitoring plan that includes: Selecting
water quality monitoring locations,
filing of reports at the end of year 5, and
conducting additional temperature, DO,
and TGD monitoring beyond the 5-year
period, if needed; (3) consultation with
the TRG prior to implementation of the
Blasting Plan, the woody debris plan,
the proposed side-channel enhancement
plan, the proposed gravel
supplementation program, and the Spill
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
Plan; (4) consultation with Interior and
Washington DFW during final design of
the intake structure and trashracks; (5)
a project compliance monitoring plan;
(6) revision of the Vegetation Plan to
include filing monitoring reports
annually for first 5 years and in year 8
and providing the Commission, FWS,
BLM, and Washington DFW with these
reports and filing for Commission
approval, any proposals for further
restoration measures; (7) incorporation
of the land occupied by the sidechannel enhancement and length of the
project access road from the LoomisOroville Road to the powerhouse into
the project boundary; (8) retention of
dead trees along the reservoir and
provisions for 10 artificial perch poles;
(9) preparation of an Ute ladies’-tresses
survey plan after consultation with
FWS, BLM, and Washington DFW and
an additional plan to avoid or minimize
adverse effects on the Ute ladies’-tresses
if they are identified in the project areas;
(10) consultation with stakeholders on
the final Recreation Management Plan;
(11) a plowing schedule for winter
months; (12) a recreation use monitoring
plan developed in consultation with
BLM; (13) a fire suppression program;
(14) removal of the one small,
deteriorated building on Okanogan PUD
land at the north end of the proposed
Enloe dam recreation area; (15)
consultation with BLM and local
emergency response agencies on the
Safety During Construction Plan; (16)
creation of a river access point at
Miner’s Flat; (17) consultation with
BLM and the Colville to develop details
on how the facilities and laydown or
construction areas would blend into the
existing landscape; and (18) a revised
HPMP to include provisions for: Further
consideration of the potential effects of
capping site 45OK532, a description of
the proposed side-channel enhancement
site, two separate defined APEs that
delineate the proposed Enloe project
and the proposed side-channel
enhancement site, consultation with the
Cultural Resources Working Group
regarding the resolution of adverse
effects on the historic Enloe
powerhouse, re-evaluating the OrovilleTonasket Irrigation Canal for National
Register-eligibility, completing
determinations of eligibility for
unidentified cultural resources on BLM
lands, periodic review of the HPMP, a
site monitoring program, cultural
interpretative and education measures,
and revising the APEs to accommodate
modifications to the project boundary.
PO 00000
Frm 00006
Fmt 4701
Sfmt 4703
Public Involvement and Areas of
Concern
Before filing its license application,
Okanogan PUD conducted pre-filing
consultation under the traditional
licensing process. The intent of the
Commission’s pre-filing process is to
initiate public involvement early in the
project planning process and encourage
citizens, governmental entities, tribes,
and other interested parties to identify
and resolve issues prior to an
application being formally filed with the
Commission.
After the license application was
filed, we conducted scoping to
determine what issues and alternatives
should be addressed. On December 16,
2008, we distributed Scoping Document
1 (SD1) to interested parties, soliciting
comments, recommendations, and
information on the project. An
environmental site review of the project
was held on January 15, 2009. Two
scoping meetings were held in Oroville,
Washington, on January 14 and 15,
2009, to receive oral comments on the
project. Based on discussions during the
environmental site review and scoping
meetings and written comments filed
with the Commission, we issued a
revised scoping document (SD2) on May
7, 2009. On December 28, 2009, we
issued a notice that the application was
ready for environmental analysis and
requested conditions and
recommendations.
The primary issues associated with
licensing the project are the effects of
project construction and operation on
geology and soils; water quality; aquatic,
terrestrial, and cultural resources;
threatened and endangered species; and
recreation, land use, and aesthetic
resources.
Staff Alternative
Aquatic Resources
Measures proposed in the ESCP,
CSMP, Spill Plan, Blasting Plan, and
Safety During Construction Plan would
help prevent adverse effects from
erosion and sedimentation that may
result from construction and operation
of the project, and would help prevent
adverse effects on geology and soils and
water quality.
Run-of-river operation would
minimize effects on aquatic resources.
Locating the tailrace downstream of
Similkameen Falls would reduce TDG
and enhance conditions for aquatic
resources in the Similkameen
downstream of the falls. In addition,
designing the tailrace in a manner to
provide circulation in the pool and
aerating the draft tubes would ensure
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
adequate DO for aquatic resources
downstream of Similkameen Falls.
Providing minimum flows in the
bypassed reach would provide some
refuge for resident fish in the plunge
pool downstream of Enloe dam. The
1-inch trash rack spacing on the intake
trashrack, and installation and
monitoring of a tailrace net barrier
would minimize adverse affects on
aquatic resources.
The construction of the side channel,
gravel enhancement, riparian planting
projects, and improved water quality
due to reductions in TDG and enhanced
DO levels are expected to have longterm benefits for holding, spawning, and
rearing fish, particularly anadromous
salmonids, and should increase
anadromous salmonid productivity in
the Similkameen River downstream of
the project.
sroberts on DSK69SOYB1PROD with NOTICES
Terrestrial Resources
Measures in the Vegetation Plan,
including grazing controls, noxious
weed control, vegetation monitoring,
employing BMPs, providing biological
monitor during construction, retaining
dead trees and installing artificial perch
poles for bald eagle perching habitat,
and employee training would prevent
adverse effects on riparian and wetland
areas which provide habitat for wildlife,
as well as mitigate for adverse effects
during construction of the project.
Threatened and Endangered Species
The Similkameen River below
Similkameen Falls is designated critical
habitat for the threatened UCR
steelhead, the only fish species known
to occur in project affected waters that
is listed under the Endangered Species
Act (ESA). Proposed measures to reduce
TDG, increase DO through draft tube
aeration, supplement spawning gravel,
transport large woody debris, and
construct the side-channel
enhancements would improve spawning
and rearing habitat in the river
downstream of the falls and increase
productivity. The biological review
process, fisheries monitoring, and
ongoing refinement would provide longterm benefits for UCR steelhead and
UCR steelhead designated critical
habitat.
Additional surveys for the threatened
Ute ladies’-tresses prior to, during, and
postconstruction would either confirm
that the species does not occur in areas
affected by the project or guide the
development of avoidance or mitigative
measures. The survey results and filing,
with the Commission for approval,
proposed measures to avoid or mitigate
impacts to listed species;
implementation of the Vegetation Plan,
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
including noxious weed control,
employing BMPs during construction,
employee training, and provision of a
biological monitor during construction
would protect potential Ute ladies’tresses habitat in areas affected by the
project and at the proposed side channel
enhancement site.
Recreation and Land Use
Implementation of the Recreation
Management Plan would improve
existing recreational facilities and
opportunities. The Safety During
Construction Plan, as well as the Fence
Plan, would help keep visitors to the
project away from the construction
activities and reduce user conflicts
between recreationists and cattle grazing
activities.
Inclusion of the entire OrovilleTonasket Irrigation District Ditch Road
as a project feature and bringing it into
the project boundary would ensure
maintenance of the entire road for the
purpose of providing public access to
the campground, boat launch, picnic
areas, and access trail to the river below
the dam.
Aesthetic Resources
Okanogan PUD’s proposal to use
visually-compatible colors and building
materials, use non-reflective surfaces
where possible, and consult with the
Colville during restoration activities,
would provide some protection for
visual resources. The staff alternative
with additional recommendations
including coordination with
stakeholders to include specific
approaches for blending existing and
proposed Enloe Project facilities into the
existing landscape character;
revegetating, stabilizing, and
landscaping the new construction areas
and areas immediately adjacent;
grading, planting native vegetation,
repairing slopes damaged by erosion,
and preventing future erosion;
monitoring restored areas; and
conducting maintenance activities
would provide additional protection.
Cultural Resources
Revising and implementing the May
2009 HPMP, with staff’s additional
measures, would ensure protection of
historic properties over the license term.
No-Action Alternative
Under the no-action alternative,
environmental conditions would remain
the same, and no enhancement of
environmental resources would occur.
BLM stated that it would require
Okanogan PUD to remove the dam and
all associated facilities from the public
lands under the existing right-of-way
PO 00000
Frm 00007
Fmt 4701
Sfmt 4703
28511
permit if a license is be issued. We
discussed dam removal under
cumulative effects in section 3.5.
Conclusions
Based on our analysis, we recommend
licensing the project as proposed by
Okanogan PUD with some staff
modifications and additional measures.
In section 4.2 of the EA, we estimate
the likely cost of alternative power for
each of the alternatives identified above.
Our analysis shows that during the first
year of operation under Okanogan
PUD’s proposed alternative, the project
would cost $106,470, or $2.40/
megawatt-hours (MWh), less than the
likely alternative cost of power. Under
the staff alternative, the project power
would cost $83,920, or $1.89/MWh, less
than the likely cost of alternative power.
We chose the staff alternative as the
preferred alternative because: (1) The
project would provide a dependable
source of electrical energy for the region
(44.4 gigawatt-hours annually); (2) the
project could save an equivalent amount
of fossil fuel-fired electric generation
and capacity, which may help conserve
non-renewable energy resources and
reduce atmospheric pollution, including
greenhouses gases; and (3) the
recommended environmental resources
proposed by Okanogan PUD, as
modified by staff, would adequately
protect and enhance environmental
resources affected by the project. The
overall benefits of the staff alternative
would be worth the cost of proposed
and recommended environmental
measures.
We conclude that issuing a new
license for the project, with the
environmental measures we
recommend, would not be a major
federal action significantly affecting the
quality of the human environment.
Draft Environmental Assessment
Federal Energy Regulatory Commission,
Office of Energy Projects, Division of
Hydropower Licensing, Washington, DC
Enloe Hydroelectric Project
Project No. 12569–001—Washington
1.0
Introduction
1.1 Application
On August 22, 2008, the Public Utility
District No. 1 of Okanogan County,
Washington (Okanogan PUD) filed an
application seeking a license with the
Federal Energy Regulatory Commission
(Commission or FERC) for the 9.0megawatt (MW) Enloe Hydroelectric
Project (Enloe Project or project) located
on the Similkameen River at river mile
(RM) 8.8 near the city of Oroville,
Okanogan County, Washington (figure
E:\FR\FM\17MYN2.SGM
17MYN2
28512
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
1). The project would occupy 35.47
acres of federal lands administered by
U.S. Bureau of Land Management
(BLM). The project would generate an
average of 45 gigawatt-hours (GWh) of
energy annually.
Enloe dam was originally constructed
for hydroelectric generation between
1919 and 1923. The project operated
from 1923 to 1958 when it was
decommissioned. The original project
included an intake, penstock, and
powerhouse located 850 feet
downstream of the dam on the west
bank of the Similkameen River. On
September 13, 1996, the Commission
issued an order to Okanogan PUD to
redevelop the Enloe Project using the
existing dam and rehabilitating the
original intake, penstock, and
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
powerhouse. However, on February 23,
2000, that order was rescinded.
Okanogan PUD proposes to again
redevelop the Enloe Project by using the
existing concrete gravity arch dam
impounding a 76.6-acre reservoir; and
constructing new penstock intake
structure, and above-ground steel
penstocks carrying flows from the intake
to the new powerhouse located 370 feet
downstream of the dam on the east bank
of the Similkameen River.
1.2 Purpose of Action and Need for
Power
1.2.1 Purpose of Action
The Commission must decide
whether to issue a license to Okanogan
PUD for the Enloe Project and what
conditions should be placed on any
PO 00000
Frm 00008
Fmt 4701
Sfmt 4703
license issued. In deciding whether to
issue a license for a hydroelectric
project, the Commission must determine
that the project will be best adapted to
a comprehensive plan for improving or
developing a waterway. In addition to
the power and developmental purposes
for which licenses are issued (such as
flood control, irrigation, or water
supply), the Commission must give
equal consideration to the purposes of
(1) energy conservation; (2) the
protection of, mitigation of damage to,
and enhancement of fish and wildlife
resources; (3) the protection of
recreational opportunities; and (4) the
preservation of other aspects of
environmental quality.
BILLING CODE 6717–01–P
E:\FR\FM\17MYN2.SGM
17MYN2
BILLING CODE 6717–01–C
Issuing a license for the Enloe Project
would allow the Okanogan PUD to
generate electricity for the term of the
license, making electrical power from a
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
renewable resource available to its
customers.
This draft environmental assessment
(EA) assesses the effects associated with
construction and operation of the
PO 00000
Frm 00009
Fmt 4701
Sfmt 4703
28513
project and alternatives to the proposed
project. It also includes
recommendations to the Commission on
whether to issue a license, and if so,
includes the recommended terms and
E:\FR\FM\17MYN2.SGM
17MYN2
EN17MY11.000
sroberts on DSK69SOYB1PROD with NOTICES
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
28514
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
conditions to become a part of any
license issued.
In this draft EA, we assess the
environmental and economic effects of
construction and operation of the
project as proposed by Okanogan PUD,
and with our recommended measures.
We also consider the effects of the noaction alternative. Important issues that
are addressed include the protection of
geology and soils, water quantity and
quality, cultural resources, aesthetics
resources, and recreation and land use
during project construction and
operation.
1.2.2
Need for Power
The Enloe Project would provide
hydroelectric generation to meet part of
Okanogan PUD’s power requirements,
resource diversity, and capacity needs.
The project would have an installed
capacity of 9.0 MW and generate
approximately 44.4 GWh per year.
The North American Electric
Reliability Council (NERC) annually
forecasts electrical supply and demand
nationally and regionally for a 10-year
period. The Enloe Project is located in
the Northwest subregion of the Western
Electricity Coordinating Council region
of the NERC. According to NERC’s 2010
forecast, winter peak demands and
annual energy requirements for the
Northwest subregion are projected to
grow at rates of 1.1 percent and 1.2
percent, respectively, from 2010 through
2019 (NERC, 2010). NERC projects
resource capacity margins (generating
capacity in excess of demand) will
remain above the target reserve margins
of 18.6 percent for summer and 20.0
percent for winter throughout the 2010–
2019 period. Over the next 10 years,
WECC estimates that about 6,285 MW of
additional capacity will be brought on
line.
We conclude that power from the
Enloe Project would help meet a need
for power in the Northwest subregion in
both the short and long term. The
project would provide power that
displaces non-renewable, fossil-fired
generation and contributes to a
diversified generation mix. Displacing
the operation of fossil-fueled facilities
may avoid some power plant emissions
and creates an environmental benefit.
1.3 Statutory and Regulatory
Requirements
A license for the Enloe Project would
be subject to numerous requirements
under the Federal Power Act (FPA) and
other applicable statutes. We summarize
the major regulatory requirements in
table 1 and describe them below.
TABLE 1—MAJOR STATUTORY AND REGULATORY REQUIREMENTS FOR THE ENLOE HYDROELECTRIC PROJECT
[Source: Staff]
Requirement
Agency
Status
Section 18 of the FPA (fishway prescriptions).
Section 4(e) of the FPA (land management conditions).
Section 10(j) of the FPA .................
NMFS, FWS ..................................
NMFS and FWS filed reservations of authority on February 26, 2010.
Interior ............................................
No section 4(e) conditions have been filed.
Washington DFW, FWS, NMFS ....
Washington DFW, FWS, and NMFS all filed section 10(j) recommendations on February 26, 2010.
Application for certification was received on February 25, 2011; action on the application due by February 25, 2012.
Commission staff is initiating formal consultation with both agencies.
Clean Water Act—Water Quality
Certification.
Endangered Species Act Consultation.
Coastal Zone Management Act
Consistency.
Washington DOE ...........................
National Historic Preservation Act ..
Advisory Council on Historic Preservation; Washington Department of Archaeology and Historic Preservation.
........................................................
Pacific Northwest Power Planning
and Conservation Act.
Magnuson-Stevens Fishery Conservation and Management Act.
NMFS, FWS ..................................
Washington DOE ...........................
NMFS .............................................
By letter dated September 25, 2009, Washington DOE waived its requirement for compliance with its Coastal Zone Management Program for the project.
The Commission designated Okanogan PUD as a non-federal representative for conducting section 106 consultation on September
26, 2005. Okanogan PUD filed a Historic Properties Management
Plan on June 16, 2009.
The project is not located within the designated protected area of the
Columbia River Basin and would be in compliance with specific
provisions to be considered in the licensing or relicensing of nonfederal hydropower projects.
Licensing the project could adversely affect Chinook salmon essential
fish habitat. Commission staff is initiating formal consultation with
NMFS.
sroberts on DSK69SOYB1PROD with NOTICES
Notes: 401 WQC—401 Water Quality Certificate
BLM—U.S. Bureau of Land Management
Commission—Federal Energy Regulatory Commission
FPA—Federal Power Act
FWS—U.S. Department of the Interior, Fish and Wildlife Service
Interior—U.S. Department of the Interior
NMFS—National Marine Fisheries Service
Okanogan PUD—Public Utility District No. 1 of Okanogan County
Washington DFW—Washington Department of Fish and Wildlife
Washington DOE—Washington Department of Ecology
1.3.1
Federal Power Act
1.3.1.1 Section 18 Fishway
Prescriptions
Section 18 of the FPA states that the
Commission is to require construction,
operation, and maintenance by a
licensee of such fishways as may be
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
prescribed by the Secretaries of
Commerce or the U.S. Department of the
Interior (Interior). The National Marine
Fisheries Service (NMFS) by letter dated
February 26, 2010, and the U.S.
Department of the Interior, Fish and
Wildlife Service (FWS) by letter dated
PO 00000
Frm 00010
Fmt 4701
Sfmt 4703
February 26, 2010, request that a
reservation of authority to prescribe
fishways under section 18 be included
in any license issued for the project.
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
1.3.1.2
Section 4(e) Conditions
Section 4(e) of the FPA provides that
any license issued by the Commission
for a project within a federal reservation
shall be subject to and contain such
conditions as the Secretary of the
responsible federal land management
agency deems necessary for the
adequate protection and use of the
reservation. Interior, on behalf of the
U.S. Bureau of Land Management
(BLM), filed recommended terms and
conditions by letter dated February 26,
2010, and did not prescribe any
conditions pursuant to section 4(e) of
the FPA.
1.3.1.3
Section 10(j) Recommendations
Under section 10(j) of the FPA, each
hydroelectric license issued by the
Commission must include conditions
based on recommendations provided by
federal and state fish and wildlife
agencies for the protection, mitigation,
or enhancement of fish and wildlife
resources affected by the project. The
Commission is required to include these
conditions unless it determines that
they are inconsistent with the purposes
and requirements of the FPA or other
applicable law. Before rejecting or
modifying an agency recommendation,
the Commission is required to attempt
to resolve any such inconsistency with
the agency, giving due weight to the
recommendations, expertise, and
statutory responsibilities of such
agency.
NMFS, FWS, and Washington
Department of Fish and Wildlife
(Washington DFW) all timely filed, on
February 26, 2010, recommendations
under section 10(j), as summarized in
table 23, in section 5.4,
Recommendations of Fish and Wildlife
Agencies. In section 5.4, we also discuss
how we address the agency
recommendations and comply with
section 10(j).
sroberts on DSK69SOYB1PROD with NOTICES
1.3.2
Clean Water Act
Under section 401 of the Clean Water
Act (CWA), a license applicant must
obtain certification from the appropriate
state pollution control agency verifying
compliance with the CWA. On February
24, 2010, Okanogan PUD applied to the
Washington Department of Ecology
(Washington DOE) for a 401 Water
Quality Certificate (WQC) for the Enloe
Project. Washington DOE received this
request on February 25, 2010.
Washington DOE has not yet acted on
the request. Washington DOE action is
due by February 25, 2011.
On October 28, 2010, Okanogan PUD
filed a status report on its negotiations
with Washington DOE and Washington
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
DFW regarding possible conditions for
the WQC for the Enloe Project, and on
November 10, 2010, it filed
supplemental information regarding the
basis for the potential conditions. In this
filing, measures for aquatic resources
would include:
• A minimum flows of 30 cfs from
mid-July to mid-September, and 10 cfs
rest of the year to the pool below Enloe
dam.
• Monitoring water temperature in
the bypassed reach for a period of time
postconstruction; and adopting an
adaptive management program to
enhance DO and water temperatures
should monitoring indicate that water
quality standards are not being met.
• Determining appropriate thresholds
for downramping rates immediately
downstream of Enloe dam based on
monitoring and field observations prior
to operations.
• Selecting an appropriate minimum
flow release location in consultation
with fisheries resource agencies
(Washington DOE, Washington DFW,
Interior, NMFS, BLM, and the Colville),
and making appropriate project
modifications to provide minimum flow
releases.
1.3.3 Endangered Species Act
Section 7 of the Endangered Species
Act (ESA) requires federal agencies to
ensure that their actions are not likely
to jeopardize the continued existence of
endangered or threatened species or
result in the destruction or adverse
modification of the critical habitat of
such species. NMFS notified the
Commission in its February 26, 2010,
filing that one ESA-listed threatened
species of anadromous fish is known to
occur in the Similkameen River below
Enloe dam: The upper Columbia River
(UCR) steelhead distinct population
segment. Designated critical habitat
includes the Similkameen River below
Similkameen Falls (the falls). There is
no critical habitat designation upstream
of Similkameen Falls.
FWS lists five additional ESA-listed
species of fish, wildlife, and plants that
occur in Okanogan County, Washington,
including the bull trout (threatened),
Canada lynx (threatened), grizzly bear
(threatened), northern spotted owl
(threatened), and Ute ladies’-tresses
(threatened). There is no designated
critical habitat for any of these species
within the Enloe Project boundary. Our
analyses of project impacts on
threatened and endangered species are
presented in section 3.3.5, Threatened
and Endangered Species, and our
recommendations in section 5.2,
Comprehensive Development and
Recommended Alternative.
PO 00000
Frm 00011
Fmt 4701
Sfmt 4703
28515
We conclude that licensing the project
would have no effect on bull trout,
Canada lynx, grizzly bear, and northern
spotted owl.
We conclude that licensing the project
would adversely affect federally listed
UCR steelhead because proposed project
construction and habitat enhancement
projects could result in short-term
increases in turbidity and sedimentation
and the risk of injury or mortality to
eggs, fry, juveniles, or adults by
instream use of equipment.
Construction of the tailrace could result
in injury or mortality to eggs, fry,
juveniles, or adults caused by capture
and transport, relocation, and blasting.
UCR steelhead injury or mortality could
result from fish swimming into draft
tubes and hitting the turbine runner
during project operation. We conclude,
however, that the proposed project
would not appreciably diminish the
value of designated UCR steelhead
critical habitat for both survival and
recovery of this species and the
proposed enhancement measures would
provide some long-term beneficial
effects. Consequently, we will request
formal consultation with NMFS
pursuant to section 7 of the ESA.
Potential habitat for Ute ladies’-tresses
exists along the reservoir and in the side
channel enhancement area. No
populations of this species were
discovered during Okanogan PUD’s rare
plant surveys, but there are agency
concerns about the adequacy of the
surveys. If Ute ladies’-tresses grows in
the habitat identified at the edge of the
reservoir, operation of the proposed
crest gates would inundate the
population. If this species occurs at the
side-channel enhancement site,
construction, operation, and
maintenance of the proposed facility
could adversely affect the plants, but it
may be possible to adjust the facility’s
footprint so that the plants are not
affected.
In response to agency
recommendations for additional
surveys, Okanogan PUD proposes to
survey areas that could potentially
provide habitat for Ute ladies’-tresses for
an additional 3 years as part of its
proposed Vegetation Mitigation and
Monitoring Plan (Vegetation Plan).
Thereafter, potential habitat for Ute
ladies’-tresses would be resurveyed only
if site management changes occur that
could affect that habitat. Okanogan
PUD’s proposed surveys would either
confirm that Ute ladies’-tresses does not
occur in areas that would be affected by
the project or would guide the
development of avoidance or mitigative
measures for this species. Therefore,
licensing the project with the
E:\FR\FM\17MYN2.SGM
17MYN2
28516
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
recommended protection, mitigation,
and enhancement measures would not
be likely to adversely affect Ute ladies’tresses.
1.3.4 Coastal Zone Management Act
Under section 307(c)(3)(A) of the
Coastal Zone Management Act
(CZMA),1 the Commission cannot issue
a license for a project within or affecting
a state’s coastal zone unless the state
CZMA agency concurs with the license
applicant’s certification of consistency
with the state’s CZMA program, or the
agency’s concurrence is conclusively
presumed by its failure to act within 180
days of its receipt of Okanogan PUD’s
certification.
By letter dated September 25, 2009,
the Washington DOE waived its
requirement for compliance with its
Coastal Zone Management Program for
the project. Therefore, no consistency
certification is required.
sroberts on DSK69SOYB1PROD with NOTICES
1.3.5 National Historic Preservation
Act
Section 106 of the National Historic
Preservation Act of 1966 (NHPA) 2 and
its implementing regulations,3 requires
that every federal agency ‘‘take into
account’’ how each of its undertakings
could affect historic properties. Historic
properties are districts, sites, buildings,
structures, traditional cultural
properties, and objects significant in
American history, architecture,
engineering, and culture that are eligible
for inclusion in the National Register of
Historic Places (National Register). To
meet the requirements of section 106,
the Commission intends to execute a
Programmatic Agreement (PA) for the
protection of historic properties from
the effects of the construction,
operation, and maintenance of the Enloe
Project. The terms of the PA would
ensure that Okanogan PUD addresses
and treats all historic properties
identified within the project’s areas of
potential effects (APEs) for the proposed
project and the side-channel
enhancement site through
implementation of a revised Historic
Properties Management Plan (HPMP).
1.3.6 Pacific Northwest Power
Planning and Conservation Act
Under section 4(h) of the Pacific
Northwest Power Planning and
Conservation Act, the Northwest Power
and Conservation Council developed
the Columbia River Basin Fish and
Wildlife Program to protect, mitigate,
and enhance the operation of the
1 16
U.S.C. 1456(c)(3)(A) (2006).
VerDate Mar<15>2010
17:06 May 16, 2011
hydroelectric projects within the
Columbia River Basin. Section 4(h)
states that responsible federal and state
agencies should provide equitable
treatment for fish and wildlife
resources, in addition to other purposes
for which hydropower is developed,
and that these agencies should take into
account, to the fullest extent practicable,
the program adopted under the Pacific
Northwest Power Planning and
Conservation Act.
The program directs agencies to
consult with federal and state fish and
wildlife agencies, appropriate Indian
tribes, and the Council during the study,
design, construction, and operation of
any hydroelectric development in the
basin.
To mitigate harm to fish and wildlife
resources, the Council has adopted
specific provisions to be considered in
the licensing or relicensing of nonfederal hydropower projects (appendix
B of the Program). The specific
provisions that apply to the proposed
project call for: (1) Specific plans for
fish facilities prior to construction; (2)
assurance that the project would not
degrade fish habitat or reduce numbers
of fish; (3) assurance all fish protection
measures are fully operational at the
time the project begins operation; (4)
timing construction activities, insofar as
practical, to reduce adverse effects on
wintering grounds; and (5) replacing
vegetation if natural vegetation is
disturbed.
Our recommendations in this EA
(sections 2.2 and 2.3) are consistent
with the applicable provisions of the
program, listed above. Further, a
condition of any license issued would
reserve the Commission’s authority to
require future alterations in project
structures and operations to take into
account, to the fullest extent practicable,
the applicable provisions of the
program.
As part of the Program, the Council
has designated more than 40,000 miles
of river (protected area) in the Pacific
Northwest region as not being suitable
for hydroelectric development. The
project is not located within a protected
area.
1.3.7 Magnuson-Stevens Fishery
Conservation and Management Act
The Magnuson-Stevens Fishery
Conservation and Management Act
requires federal agencies to consult with
NMFS on all actions that may adversely
affect essential fish habitat (EFH). The
Pacific Fishery Management Council
2 16
Jkt 223001
PO 00000
U.S.C. 470 et seq. (2006).
Frm 00012
Fmt 4701
Sfmt 4703
manages the fisheries for coho, Chinook,
and Puget Sound pink salmon and has
defined EFH for these three species.
Salmon EFH includes all those streams,
lakes, ponds, wetlands, and other water
bodies currently or historically
accessible to salmon in Washington,
except areas upstream of certain
impassable human-made barriers
(Pacific Fisheries Management Council,
2010), and longstanding, naturally
impassable barriers (i.e., natural
waterfalls in existence for several
hundred years). The historically
accessible reaches of the Similkameen
River (RM 0 to the falls) are EFH for
Chinook salmon.
Based on our analysis in this EA of
the proposed action as specified in the
license application, we conclude that
licensing the project would be likely to
adversely affect EFH for the UCR
Chinook salmon for the same reasons
we conclude that licensing the project
would adversely affect the UCR
steelhead and its designated critical
habitats (see section 1.3.3, Endangered
Species Act). Consequently, we will
request that NMFS provide any EFH
recommendation along with its
biological opinion regarding listed
anadromous fish.
1.4
Public Review and Consultation
The Commission’s regulations (18
CFR, section 4.38) require that
applicants consult with appropriate
resource agencies, tribes, and other
entities before filing an application for
a license. This consultation is the first
step in complying with the Fish and
Wildlife Coordination Act, ESA, NHPA,
and other federal statutes. Pre-filing
consultation must be complete and
documented according to the
Commission’s regulations.
1.4.1
Scoping
Before preparing this EA, we
conducted scoping to determine what
issues and alternatives should be
addressed. Scoping Document 1 (SD1)
was issued on December 16, 2008. Two
scoping meetings were noticed on
December 16, 2008, and held on January
14 and 15, 2009, in Oroville,
Washington. A court reporter recorded
all comments and statements made at
the scoping meetings, and these are part
of the Commission’s public record for
the project. In addition to comments
provided at the scoping meetings, the
following entities provided written
comments:
3 36
CFR Part 800 (2009).
E:\FR\FM\17MYN2.SGM
17MYN2
28517
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
Commenting entity
Date filed
Washington DFW .....................................................................................................................................................................
National Park Service (Park Service) ......................................................................................................................................
Richard Terbasket ...................................................................................................................................................................
FWS .........................................................................................................................................................................................
BLM ..........................................................................................................................................................................................
Columbia River Inter-Tribal Fish Commission (CRITFC) ........................................................................................................
NMFS .......................................................................................................................................................................................
Washington DOE .....................................................................................................................................................................
U.S. Bureau of Indian Affairs (BIA) .........................................................................................................................................
U.S. Environmental Protection Agency (EPA) ........................................................................................................................
Lower Similkameen Indian Band .............................................................................................................................................
Confederated Tribes of the Colville Reservation (Colville) .....................................................................................................
Arnold N. Merchand .................................................................................................................................................................
A revised scoping document 2 (SD2),
addressing these comments, was issued
on May 7, 2009.
1.4.2 Interventions
On October 29, 2008, the Commission
issued a notice that Okanogan PUD had
filed an application for a license for the
Enloe Project. This notice set December
Date filed
Greater Columbia Water Trail Coalition (Water Trail Committee) ..........................................................................................
American Whitewater ...............................................................................................................................................................
Washington Department of Natural Resources (Washington DNR) .......................................................................................
Washington DFW .....................................................................................................................................................................
American Rivers ......................................................................................................................................................................
Washington DOE .....................................................................................................................................................................
CRITFC ....................................................................................................................................................................................
Interior ......................................................................................................................................................................................
NMFS .......................................................................................................................................................................................
Colville 4 ...................................................................................................................................................................................
A notice requesting conditions and
recommendations was issued on
Date filed
British Columbia Ministry of Environment (Ministry of Environment) ......................................................................................
Chloe O’Loughlin, Canadian Parks and Wilderness Society—British Columbia Chapter ......................................................
Colville .....................................................................................................................................................................................
Interior (including FWS and BLM) ...........................................................................................................................................
NMFS .......................................................................................................................................................................................
Washington DFW .....................................................................................................................................................................
American Rivers, American Whitewater, the Center for Environmental Law and Policy, the North Cascades Conservation
Council (Cascade Chapter), Water and Salmon Committee of the Sierra Club, and the Columbia River Bioregional
Education Project (American River et al.).
U.S. Department of Agriculture, Forest Service (Forest Service) ...........................................................................................
CRITFC ....................................................................................................................................................................................
Proposed Action and Alternatives
2.1
sroberts on DSK69SOYB1PROD with NOTICES
2.0
No-Action Alternative
The no-action alternative is license
denial. Under the no-action alternative,
the project would not be built, and the
environmental resources in the project
area would not be affected.
2.2
Applicant’s Proposal
2.2.1
Proposed Project Facilities
The proposed Enloe Project would
consist of: (1) An existing 315-foot-long,
54-foot-high concrete gravity arch dam
with an integrated 276-foot-long central
overflow spillway; (2) three 5-foot-high
automated steel flap crest gates; (3) an
existing 76.6-acre reservoir (narrow
channel of the Similkameen River) with
a storage capacity of 775 acre-feet at a
surface elevation of 1,049.3 feet above
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00013
Fmt 4701
Sfmt 4703
February
February
February
February
February
February
February
18,
24,
26,
26,
26,
26,
26,
2010.
2010.
2010.
2010.
2010.
2010.
2010.
February 27, 2010.
March 1, 2010.
mean sea level (msl); (4) a 190-foot-long
intake canal on the east abutment of the
dam diverting flows into the penstock
intake structure; (5) a 35-foot-long by
30-foot-wide penstock intake structure;
(6) two above-ground 8.5-foot-diameter,
150-foot-long steel penstocks carrying
flows from the intake to the
powerhouse; (7) a powerhouse
containing two vertical Kaplan turbine/
generator units with a total installed
capacity of 9.0 MW; (8) a 180-foot-long
tailrace channel, downstream of the
4 Late intervention; no action has been taken on
this petition.
VerDate Mar<15>2010
October 31, 2008.
November 4, 2008.
November 26, 2008.
November 26, 2008.
December 8, 2008.
December 11, 2008.
December 29, 2008.
December 29, 2008.
December 30, 2008.
April 10, 2009.
December 28, 2009. The following
entities commented:
Commenting agency and other entity
Okanogan PUD filed reply comments
on April 9, 2010.
6, 2009.
9, 2009.
12, 2009.
13, 2009.
17, 2009.
17, 2009.
17, 2009.
17, 2009.
17, 2009.
17, 2009.
20, 2009.
23, 2009.
23, 2009.
29, 2008, as the deadline for filing
protests and motions to intervene. In
response to the notice, the following
entities filed motions to intervene, none
in opposition:
Intervenor
1.4.3 Comments on the License
Application
February
February
February
February
February
February
February
February
February
February
February
February
February
E:\FR\FM\17MYN2.SGM
17MYN2
28518
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
falls; (9) a substation adjacent to the
powerhouse; (10) a 100-foot-long, 13.2kilovolt (kV) primary transmission line
connecting the substation to an existing
distribution line; (11) about 1.5 miles of
new and upgraded access roads; and
(12) appurtenant facilities. The project
would generate an average of 45 GWh of
electricity annually.
sroberts on DSK69SOYB1PROD with NOTICES
2.2.2 Project Safety
As part of the licensing process, the
Commission would review the adequacy
of the proposed project facilities.
Special articles would be included in
any license issued, as appropriate.
Commission staff would inspect the
licensed project both during and after
construction. Inspection during
construction would concentrate on
adherence to Commission-approved
plans and specifications, special license
articles relating to construction, and
accepted engineering practices and
procedures. Operational inspections
would focus on the continued safety of
the structures, identification of
unauthorized modifications, efficiency
and safety of operations, compliance
with the terms of the license, and proper
maintenance. In addition, any license
issued would require an inspection and
evaluation every 5 years by an
independent consultant and submittal
of the consultant’s safety report for
Commission review.
2.2.3 Proposed Project Operation
The Enloe Project would operate
automatically in a run-of-river mode,
regardless of water year (wet, dry, or
average). Under a run-of-river mode of
operation, all project outflows would
approximate all project inflows at any
point in time, such that there would be
minimal fluctuation of the reservoir
surface elevation.5 The existing dam
crest elevation of 1,044.3 feet would be
increased by re-installation of 5-foothigh crest gates which would increase
the reservoir to 1,049.3 feet elevation.
Automated crest gates would be
installed that would automatically
adjust to regulate spills and maintain a
nearly constant reservoir elevation
relative to reservoir inflow. Okanogan
PUD plans to maintain reservoir levels
between elevation 1,048.3 feet and
elevation 1,049.3 feet (top of crest gates)
when inflows are equal to, or less than,
the maximum hydraulic capacity of the
units (1,600 cfs). This is estimated to
occur approximately 70 percent of the
time. Discharge through the units would
5 A perfectly constant water level would be
difficult to achieve because natural events, such as
wave action, would likely cause slight fluctuations
in the reservoir surface elevation regardless of
operational controls.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
be approximately equal to inflow based
on the maintenance of reservoir levels.
When inflows are between 1,600 and
16,500 cfs, which is estimated to occur
approximately 29 percent of the time,
the reservoir elevation would be
maintained between elevation 1,049.3
feet and elevation 1,050.3 feet. When
inflows exceed 16,500 cfs, which is only
estimated to occur approximately
1 percent of the time, the crest gates
would be fully lowered and the water
level would be controlled at the
spillway. During low flow conditions,
less than 500 cfs, the project would
operate in run-of-river mode with one
unit running. In this operational mode,
a stable water level of the reservoir and
stable flow in the downstream reach
would be maintained. Under these
conditions, the rate of change in the
outflow from the reservoir would follow
the natural rate of change on the inflow
to the reservoir.
2.2.4 Proposed Environmental
Measures
Okanogan PUD proposes the
following environmental measures.6
Geology and Soil Resources
• Develop and implement the Erosion
and Sediment Control Plan (ESCP) to
minimize the effects of construction,
repair, and operation of the dam and
intake, penstocks, powerhouse, tailrace,
impoundment, access roads, powerline,
and construction camp (WQ–06).
• Develop and implement a
Construction Sediment Management
Program (CSMP) to minimize sediment
disturbance and maximize sediment
containment during construction
(WQ–08).
Water Quality
• Monitor water temperatures at three
locations for a period of 5 years to
determine if the operation of crest gates
causes an increase in the water
temperatures in the reservoir when
compared with upstream of the
reservoir (WQ–01).
• Locate the powerhouse tailrace so
that it discharges to and circulates water
in the plunge pool downstream of
Similkameen Falls, preventing
stagnation and consequently water
quality degradation of the pool habitat
(WQ–02 and FISH–09).
• Provide aeration in the powerhouse
draft tubes during low flow summer
months and monitor for the first 5 years
to determine the optimum time to
provide aeration (WQ–03).
6 We used Okanogan PUD’s classification of their
environmental measures presented in the license
application, and they are indicated in parentheses
after each measure.
PO 00000
Frm 00014
Fmt 4701
Sfmt 4703
• Monitor total dissolved gas (TDG)
and DO at the project intake and in the
pool below Similkameen Falls for a
period of 5 years to assess TDG and DO
under project operations (WQ–04).
• Design a broad, shallow intake
structure and channel to minimize
sediment disturbance in the reservoir
near the intake (WQ–05).
• Develop and implement at project
initiation a Spill Plan to reduce
potential effects from accidental spills
when heavy machinery is operating near
the river and reservoir (WQ–07).
Aquatic Resources
• Implement the Blasting Plan and
use best management practices (BMPs)
to avoid and minimize the potential
effects on aquatic resources, including
federally listed or sensitive species
(FISH–01).
• Place two clusters of boulders in
riffles or in plane-bed sections of the
Similkameen River upstream of the
reservoir to improve mountain whitefish
habitat and recreational fisheries (FISH–
02).
• Ensure that logs and other large
woody debris can pass over the dam
spillway during the annual flood and, if
needed, transport some large woody
debris around the dam and place it in
the river downstream of the dam to
provide fish habitat (FISH–03).
• Design the intake trashrack with
1-inch bar spacing so that smaller fish
would be able pass safely through the
trashrack and larger fish would be
discouraged or prevented from passing
through the trashracks and turbines
(FISH–04).
• Monitor seasonal variation in
entrainment susceptibility; observe
trauma and mortality caused by
entrainment, and monitor reservoir fish
populations to relate the entrainment
observations with the fish distribution
and abundance in the reservoir (FISH–
05).
• Install tailrace barrier nets in the
powerhouse draft tubes to prevent fish
in the tailrace from swimming upstream
into the draft tubes during low flows
and an inspection and maintenance
plan to ensure that the tailrace barrier
operates effectively (FISH–06).
• Monitor barrier nets with video
cameras to observe if adult salmonids
are able to enter the draft tubes past the
barrier nets (FISH–07). Develop and
implement a written operation plan, a
post construction evaluation and
monitoring plan, and an inspection and
maintenance plan.7
7 Okanogan PUD proposes to develop and
implement the recommended-written operation
plan for the tailrace barrier (April 19, 2010) from
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
• Operate the project in a run-of-river
mode so that there are no detectable
changes in flows below Similkameen
Falls (FISH–08). Avoid flow fluctuations
that might affect downstream resources
by complying with ramping rate
restrictions as recommended by
resource agencies.8 Monitor ramping
rate compliance utilizing an existing
Washington DOE gage on the
Similkameen River.
• Design and place the tailrace to
avoid effects on fish that use the plunge
pool below Similkameen Falls (FISH–09
and WQ–02).
• Enhance an existing side channel to
improve spawning, rearing, and summer
thermal refugia downstream of the
powerhouse tailrace (FISH–10).
• Implement a gravel
supplementation program to increase
the amount of gravel in the river
downstream of Enloe dam and improve
spawning habitat (FISH–11).
• Develop a biological review
process, including a Biological Resource
Program, and consultation with the
Technical Review Group (TRG)
comprising the Colville, BLM,
Washington DOE, Washington DNR,
NMFS, FWS, and Washington DFW
(FISH–12).
• Develop a fisheries monitoring
database for organizing and storing
monitoring data related to aquatic
resources (FISH–13).
Terrestrial Resources
sroberts on DSK69SOYB1PROD with NOTICES
• Implement the Vegetation Plan to
minimize effects on riparian and
wetland vegetation, including goals, the
species to be used, methods, and
benchmarks of success for botanical
resources (BOTA–01).9
• Plant riparian vegetation along the
west and east banks of the reservoir
shoreline to mitigate the temporary loss
of habitat while fringe riparian
vegetation establishes along the new
water line (BOTA–02).
• Return the existing shoreline road
to natural conditions to improve
wildlife habitat along the reservoir and
eliminate the current interruption
between the shoreline and upland
habitat (BOTA–03, also analyzed as part
of REC–13).
• Plant woody riparian species in the
riparian area along the abandoned road
corridor (BOTA–04).
NMFS, Interior, and Washington DFW (February,
26, 2010).
8 Okanogan PUD proposes to comply with
recommended ramping rates (April 9, 2010) from
NMFS, Department of Interior, and Washington
DFW recommendations (February 26, 2010).
9 The Vegetation Plan (BOTA–01) contains the
measures BOTA–2 through BOTA–7, BOTA–11,
REC–01, and AES–04.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
• Plant woody riparian vegetation
along the east and west banks of the
reservoir downstream of Shanker’s Bend
and upstream of the reservoir (BOTA–
05).
• Install grazing control measures,
including fencing, to protect riparian
plantings and sensitive areas from cattle
grazing (BOTA–06, also analyzed as part
of REC–1).
• Monitor restored areas annually for
5 years and then once again at year 8,
and plant additional willows if
performance criteria are not met;
provide annual reports of the
monitoring results to the U.S. Army
Corps of Engineers (Corps) and
Washington DOE (BOTA–07).
• Employ BMPs during construction
to protect riparian and wetland
vegetation, including measures such as
flagging and temporarily fencing any
wetland and riparian vegetation in the
vicinity of the project that would reduce
or avoid accidental impacts, and
limiting construction and maintenancerelated disturbance of sensitive habitats
to the extent possible to protect these
resources (BOTA–08).
• Develop and implement an
environmental training program to
inform employees and contractor
employees who work on the project site
or related facilities during construction
and operation about the sensitive
biological resources associated with the
project area (BOTA–09).
• Provide a biological monitor to
check construction sites on a weekly
schedule to ensure that protected areas
are not disturbed and that fencing and
other control measures are intact
(BOTA–10).
• Implement the Noxious Weed
Control Program to control weeds along
roads and construction sites (BOTA–11).
• Survey disposal sites and control
noxious weeds by implementing control
measures prior to spoil disposal
(BOTA–12).
• Hydroseed disposal sites using
native upland species, following
completion of spoil disposal (BOTA–
13).
• Strategically place and install the
project transmission line to reduce the
adverse effects on raptors and other
birds (WILD–01).
• Concentrate construction activities
to occur in summer and early fall to
minimize effects on overwintering birds
and bald eagles (WILD–02).
• Conduct pre-disposal site survey for
wildlife and time the clearing of
vegetation at spoil disposal sites to
minimize wildlife impacts (WILD–03).
PO 00000
Frm 00015
Fmt 4701
Sfmt 4703
28519
Threatened and Endangered Species
• Conduct surveys for Ute ladies’tresses prior to, during, and
postconstruction to either confirm that
the species does not occur in the areas
affected by the project or guide the
development of avoidance or mitigative
measures (BOTA–14).
Recreation and Land Use
• Implement the Recreation
Management Plan, which includes
measures for recreation and safety of
and access to the project areas (REC–13).
• Revise and implement the Fence
Plan in coordination with the
Recreation Management Plan to include:
(a) Installation of barricades and fencing
on the east side of the dam and the area
below the dam; (b) use of non-barbed
wire at the recreation area; and (c)
installation of a stock watering tank
north of the proposed recreation site as
an alternative source of drinking water
for all grazing cattle with rights to this
area (REC–01).
• Provide public access downstream
of Enloe dam on the east bank by
developing a trail to the river below the
dam (REC–02).
• Transfer to Okanogan County
ownership rights to the trestle bridge
that is located on the west side of the
river downstream of the dam with
certain conditions (REC–03).10
• Improve the existing informal boat
ramp located on the east bank upstream
of the dam (REC–04).
• Clean up and restore wooded area
on east bank of the reservoir (REC–05).
• Develop an interpretive publication,
in collaboration with Okanogan County,
the Greater Columbia Water Trail
Steering Committee (Water Trail
Committee), and other interested
parties, that would include a map
illustrating public access and recreation
sites (REC–06).
• Remove existing trash and conduct
annual cleanup activities within the
wooded area on the east bank of the
reservoir and along the OrovilleTonasket Irrigation District (OTID) Ditch
Road leading from the Loomis-Oroville
Road to the dam site (REC–07).
• Develop a parking area and install
a vault toilet, accessible to persons with
disabilities, on the east bank and
upstream of Enloe dam included in
(Okanogan PUD, 2009b) (REC–08).
• Install picnic tables, at least one of
which should incorporate universal
design principles, near the parking area
taking advantage of existing trees for
shading (REC–09).
10 Land ownership rights were transferred to
Okanogan County in 2007.
E:\FR\FM\17MYN2.SGM
17MYN2
28520
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
• Develop primitive campsites near
the parking and picnic area (REC–10).
• At a minimum, install one
interpretive sign near the parking and
picnic area and one sign near the
abutment of the old powerhouse access
bridge, below Similkameen Falls (REC–
11).
• Place an information board near
Enloe dam to depict public access areas
and information concerning visitor use
of the project area (REC–12).
• Maintain the existing signs and
system of safety cables and grab ropes
above the dam, install dam safety/
warning signs for boaters, and install a
log boom across the powerhouse intake
channel to protect boaters (SAFETY–
01).11
• Coordinate with BLM and other
land owners, as appropriate, to identify
options for preventing public access to
the old powerhouse (SAFETY–03).
• Develop and implement a Safety
During Construction Plan and allow
limited public access to the project
during construction (SAFETY–02).
Aesthetic Resources
• Use visually-compatible colors and
building materials for construction
occurring on the east bank (AES–01).
• Consult with the Colville and other
stakeholders during restoration
activities (AES–02).
• Use non-reflective surfaces where
possible during construction (AES–03).
• Grade and repair all slopes where
buildings are removed and plant native
grasses and other riparian vegetation
(AES–04).
sroberts on DSK69SOYB1PROD with NOTICES
Cultural Resources
• Solicit a new owner for the existing
historic powerhouse (HIST–01).
• If a qualified owner is not identified
for the existing historic powerhouse,
demolish the existing historic
powerhouse (HIST–02).
• Install interpretive panels about the
existing historic powerhouse (HIST–03).
• Review and reach agreement on the
HPMP and incorporate information into
a PA (HIST–04).
• Monitor shoreline areas to prevent
effects on archaeological sites due to
reservoir fluctuations (ARCH–01).
• Avoid known National Registereligible archaeological sites to prevent
effects during construction (ARCH–02).
• Monitor eligible sites during
construction activities to avoid effects
on these sites (ARCH–03).
• Develop and implement an
inadvertent discovery plan, specifying
11 All
SAFETY measures were proposed by
Okanogan PUD in the response to additional
information request filed on February 27, 2009.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
required actions and procedures if a site
is discovered during construction and
including training staff and construction
workers about the potential for
discovery of archaeological deposits
(ARCH–04).
• Determine if there would be effects
on archaeological sites in the vicinity of
recreational facilities (ARCH–05).
As we’ve said, on October 28, 2010,
Okanogan PUD filed additional
information regarding ongoing
consultations with Washington DOE
and Washington DFW for the 401 Water
Quality Certification process (letter from
Dan Boetter, Director, Regulatory and
Environmental Affairs, Okanogan PUD,
Okanogan, Washington, to Kimberly
Bose, Secretary, FERC, Washington, DC,
October 28, 2010). In this filing and for
the bypassed reach, Okanogan PUD
proposes to:
• Provide minimum flows of 30 cfs
from mid-July to mid-September, and
10 cfs rest of the year to the pool below
Enloe dam.
• Monitor DO and water temperature
in the bypassed reach for a period of
time postconstruction; and adopt an
adaptive management program to
enhance DO and water temperatures
should monitoring indicate that water
quality standards are not being met.
• Determine appropriate thresholds
for downramping rates immediately
downstream of Enloe dam based on
monitoring and field observations prior
to operations.
• Select an appropriate minimum
flow release location in consultation
with fisheries resource agencies
(Washington DOE, Washington DFW,
Interior, NMFS, BLM, and the Colville),
and make appropriate project
modifications to provide minimum flow
releases.
In this draft EA, staff will consider
measures in this filing as Okanogan
PUD’s minimum flow proposals, and
will analyze their effects on
environmental resources.
2.2.5 Modifications to Applicant’s
Proposal—Mandatory Conditions
To date, no mandatory conditions
were submitted under sections 4(e) or
18 of the FPA, or section 401 of the
CWA.
2.3 Staff Alternative
Under the staff alternative, the project
would include the majority of Okanogan
PUD’s proposed measures, with the
exception of placement of boulder
clusters in the plane bed section of the
Similkameen River upstream of
Shanker’s Bend and entrainment and
resident fish monitoring, along with the
following modifications and additions:
PO 00000
Frm 00016
Fmt 4701
Sfmt 4703
Geology and Soil Resources
• Develop and implement a Spoil
Disposal Plan after consultation with
BLM and other interested parties.
Water Quality
• Develop and file with the
Commission, in consultation with the
TRG, a water quality monitoring plan
including: Selecting the monitoring
locations; filing a report at the end of
year 5 documenting the results of
monitoring and recommendations for
the need for continued monitoring
development; and conducting water
temperature, TDG, and DO monitoring
for a period longer than 5 years if
needed.
Aquatic Resources
• Revise Okanogan PUD’s
preliminary Blasting Plan to include
preparing a final Blasting Plan after
consultation with the TRG.
• Revise Okanogan PUD’s proposed
large woody debris transport plan to
include consultation with the TRG to
determine when such transport would
be required, the methods to be used for
collection and transport of the wood,
and the best locations for release of the
woody debris downstream of the dam.
• Revise Okanogan PUD’s proposed
side-channel enhancement plan to
include consultation with the TRG to
develop the side-channel enhancement
plan and file the plan with the
Commission, with copies to the
agencies, at least 180 days prior to
implementation. Implement the plan
and incorporate the lands associated
with the side channel enhancements in
the project boundary (approximately
0.75 acre 5 miles downstream of the
dam).
• Revise Okanogan PUD’s proposed
gravel supplementation program to
include consulting with the TRG to
develop the gravel enhancement plan.
• Revise Okanogan PUD’s Spill Plan
to include consultation with BLM and
Washington DOE.
• Revise and file with the
Commission Okanogan PUD’s proposal
to design a narrow-spaced intake
trashrack to include consulting with
Interior and Washington DFW during
the final design of the intake structure
and trashracks to ensure that fish
protection features are included in the
final design.
• Develop a project operations
compliance and monitoring plan, in
consultation with the TRG, to be filed
for Commission approval.
Terrestrial Resources
• Revise the Vegetation Plan to file
monitoring reports annually for 5 years
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
and in year 8, and provide these reports
to the Commission, FWS, BLM, and
Washington DFW, and filing for
Commission approval, any proposals for
further restoration measures.
• Retain dead trees along the
reservoir unless they become a hazard
and provide 10 artificial perch poles.
Threatened and Endangered Species
• Prepare a Ute ladies’-tresses survey
plan after consultation with FWS, BLM,
and Washington DFW, and if plant
surveys identify the threatened Ute
ladies’-tresses in areas that would be
affected by the project, file for
Commission approval, an additional
plan developed, after consultation with
FWS, BLM, and Washington DFW, to
avoid or minimize adverse effects.
Recreation and Land Use
• Revise the proposed Recreation
Management Plan (REC–13) in
coordination with the Aesthetics
Management Plan and the HPMP, and
include consultation with stakeholders.
Finalize and implement the interpretive
publication as part of the Recreation
Management Plan.
• Add to the Recreation Plan an
established plow schedule to allow
visitors winter access to project lands
and waters.
• Develop and implement a
recreation use monitoring plan to
include consultation with BLM.
• Develop and implement a Fire
Suppression Program in consultation
with BLM.
• Revise the Safety during
Construction Plan to include
consultation with BLM and local
emergency response agencies.
• Add approximately 5.0 acres to the
project boundary incorporating the
entire length of the public access road
from the Loomis-Oroville Road to Enloe
dam to ensure public access throughout
the length of any license issued for the
project.
• Develop a river access point at
Miner’s Flat and incorporate
approximately 1 acre into the project
boundary.
• Remove the one small, deteriorated
building on Okanogan PUD land at the
north end of the proposed Enloe dam
recreation area.12
sroberts on DSK69SOYB1PROD with NOTICES
Aesthetics
• Revise the proposed Aesthetics
Management Plan in coordination with
the Recreation Management Plan and
the HPMP to include consultation with
12 Measures
were proposed by Okanogan PUD in
the response to additional information request filed
on February 27, 2009.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
the Colville, BLM, and other
stakeholders.
• Develop specific approaches
concerning the blending of the existing
and proposed Enloe Project facilities
into the existing landscape character.
• Include these measures at the
laydown or construction material
storage areas that have yet to be
determined.
Cultural Resources
• Revise Okanogan PUD’s May 2009
HPMP to include provisions for: (1)
Further consideration of the potential
effects of capping site 45OK532; (2) a
description of the proposed sidechannel enhancement site; (3) two
separate defined APEs that delineate the
proposed Enloe project and the
proposed side-channel enhancement
site; (4) consultation with the Cultural
Resources Working Group (CRWG)
regarding the resolution of adverse
effects on the historic Enloe
powerhouse; (5) re-evaluating the
Oroville-Tonasket Irrigation Canal for
National Register-eligibility; (6)
completing determinations of eligibility
for unidentified cultural resources on
BLM lands; (7) periodic review of the
HPMP; (8) a site monitoring program; (9)
cultural interpretative and education
measures; and (10) revising the APEs to
accommodate modifications to the
project boundary, if any.
2.4 Staff Alternative With Mandatory
Conditions
To date, no mandatory conditions
were submitted under section 4(e) or
section 18 of the FPA, or section 401 of
the CWA. NMFS and Interior, however,
request reservation of authority under
section 18.
2.5 Removal of Existing Hydroelectric
Facilities Including Enloe Dam
BLM stated that it would require
Okanogan PUD to remove the dam and
all associated facilities from the public
lands under the existing right-of-way
permit if a license is not be issued.
Removing Enloe dam would affect many
resources. We discuss the effects on
these resources in section 3.2.
3.0 Environmental Analysis
In this section, we present: (1) A
general description of the project
vicinity; (2) an explanation of the scope
of our cumulative effects analysis; and
(3) our analysis of the proposed action
and other recommended environmental
measures. Sections are organized by
resource area (aquatic, recreation, etc.).
Under each resource area, historic and
current conditions are first described.
The existing condition is the baseline
PO 00000
Frm 00017
Fmt 4701
Sfmt 4703
28521
against which the environmental effects
of the proposed action and alternatives
are compared, including an assessment
of the effects of proposed mitigation,
protection, and enhancement measures,
and any potential cumulative effects of
the proposed action and alternatives.
Staff conclusions and recommended
measures are discussed in section 5.2,
Comprehensive Development and
Recommended Alternative of the EA.13
3.1 General Description of The River
Basin
Located in north-central Washington
about 2 miles south of the Canadian
border, the Enloe Project is situated in
a narrow constriction of the
Similkameen River Valley, about 3.5
miles northwest of the city of Oroville
(figure 1). The project is located
predominantly on land administered by
the BLM. The Similkameen River is
tributary to the Okanogan River just
south of Oroville, Washington; the
Okanogan in turn flows into the
Columbia River east of Brewster,
Washington. The Similkameen River
drains the east slopes of the Cascade
Mountains in northern Washington and
southern British Columbia, Canada. The
majority (79 percent) of the drainage
basin lies within Canada.
Similkameen Falls is located about
370 feet below Enloe dam, and forms a
33-foot-long and 20-foot-high barrier
impassible to anadromous fish. Above
the dam lies a shallow reservoir with a
mean depth of 8.4 feet at the existing
dam crest elevation of 1,044.3 feet msl
and a maximum depth of 55.6 feet
(MaxDepth, 2006); the reservoir is filled
with an accumulated sediment volume
of approximately 2.43 million cubic
yards (MaxDepth, 2006). The existing
reservoir is approximately 2 miles long
and averages about 250 feet in width.
Topography in the project vicinity has
been significantly affected by glaciations
and is moderately steep and rugged. In
the lower part of the river canyon, steep
slopes adjacent to the river are
interspersed with relatively flat benches
of alluvial or glacial origin. The upper
portions of the river canyon are steep
and rocky. The mountains of the
Okanogan Highlands lie to the east and
the North Cascades to the west.
Elevations range from 1,000 feet at the
mouth of the Similkameen River at
Oroville to greater than 3,600 feet at the
summits of surrounding mountains.
The climate in the lower Similkameen
River Basin is typical of eastern
13 Unless otherwise indicated, our information is
taken from the application for license for this
project (Okanogan PUD, 2008a) and additional
information filed by Okanogan PUD (2009a–d).
E:\FR\FM\17MYN2.SGM
17MYN2
28522
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
Washington, with cool, moist winters
and hot dry summers. The Cascade
Mountains act as a barrier to the
movement of maritime and continental
air masses, creating the generally dry
conditions observed in the project
vicinity. Average annual precipitation is
approximately 11 inches. River flows
peak in late spring to early summer
when warm temperatures melt the
extensive winter snowpacks at the
higher elevations in the basin. Low
flows occur in late-fall/mid-winter
when cold temperatures minimize
runoff.
sroberts on DSK69SOYB1PROD with NOTICES
3.2 Scope of Cumulative Effects
Analysis
According to the Council on
Environmental Quality’s regulations for
implementing the National
Environmental Policy Act (40 CFR,
section 1508.7), cumulative effect is the
impact on the environment which
results from the incremental impact of
the action when added to other past,
present, and reasonably foreseeable
future actions regardless of what agency
(federal or non-federal) or person
undertakes such other actions.
Cumulative impacts can result from
individually minor but collectively
significant actions taking place over a
period of time, including hydropower
and other land and water development
activities.
Based on our review of the license
application, written and oral comments
from scoping, other filings related to the
project, and preliminary staff analyses,
we have identified water quantity and
water quality, aquatic resources
including federally listed threatened
and endangered fish species, as
resources that could be cumulatively
affected by the proposed project in
combination with other actions and
other hydroelectric development on the
Similkameen River.
3.2.1 Geographic Scope
The geographic scope of the analysis
defines the physical limits or
boundaries of the proposed action’s
effects on the resources. Because the
proposed action would affect the
resources differently, the geographic
scope for each resource may vary. For
water resources and aquatic resources,
including federally listed threatened
and endangered fish species, we have
identified the Similkameen River Basin
as our geographic scope of analysis.
3.2.2 Temporal Scope
The temporal scope of our cumulative
effects analysis in the EA includes a
discussion of past, present, and future
actions and their effects on these
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
resources. Based on the potential term
of a license, we will look 30 to 50 years
into the future, concentrating on the
effect on the resources from reasonably
foreseeable future actions. The historical
discussion is limited, by necessity, to
the amount of available information. We
identified the present resource
conditions based on the license
application, agency comments, and
comprehensive plans.
During scoping, Washington DFW,
FWS, EPA, BLM, Park Service, U.S.
Bureau of Indian Affairs, and CRITFC
requested the Commission to consider
the effects of the proposed Shanker’s
Bend Project (Project Number P–12804)
in our cumulative effects analysis
because it would be located upstream of
the Enloe Project. Washington DFW
stated that the Shanker’s Bend Project is
not a run-of-river project; therefore, the
Enloe Project would not be a run-ofriver project either, and would benefit
from the analysis of the Shanker’s Bend
Project. FWS requested that proposed
project operations of the Enloe Project
include an analysis of how the proposed
Shanker’s Bend Project would alter the
project operations as defined in the final
license application. BLM understands
that the Shanker’s Bend Project is
currently under consideration/study
and may be operated in conjunction
with Enloe dam; it recommended that
the cumulative effects on resources and
recreation uses be analyzed. BLM also
recommended that the Commission
analyze the cumulative effects of other
dams operated down-river. CRITFC
stated that the Shanker’s Bend Project is
a ‘‘reasonably foreseeable action’’ and
that the Commission must consider a
cumulative effects analysis of the
Shanker’s Bend Project with the Enloe
Project.
The Commission issued a preliminary
permit to the Okanogan PUD for the
Shanker’s Bend Project in 2008. The
purpose of a preliminary permit is to
preserve the right of the permit holder
for a period of three years to have the
first priority in applying for a license for
the project that is being studied.
Because a permit is issued only to allow
the permit holder to investigate the
feasibility of a project while the
permittee conducts investigations and
secures necessary data to determine the
feasibility of the proposed project and to
prepare a license application, it grants
no land-disturbing or other property
rights. Until such time as an application
for license is filed with the Commission,
there is no project proposal to consider.
Whether Okanogan PUD decides to file
a development application in the future
and whether the Commission would
issue a license for this project is
PO 00000
Frm 00018
Fmt 4701
Sfmt 4703
speculation and not a reasonably
foreseeable action at this time.
Dam Removal Alternative
BLM stated that it would require
Okanogan PUD to remove the dam and
all associated facilities from the public
lands under the existing right-of-way
permit if a license is not issued.
Removing Enloe dam would affect many
resources.
Effects on Water Quality
Approximately 2.43 million cubic
yards of sediment are stored behind
Enloe dam (MaxDepth, 2006). Much of
this sediment is contaminated with high
levels of arsenic, cadmium, copper, and
other metals. Removal of the dam would
release these contaminated sediments to
the Similkameen and Okanogan rivers
and eventually the Columbia River.
Dredging and disposing of the
sediments from the reservoir prior to
dam removal risks resuspension and
transport of some of these sediments to
downstream areas. Even if the
sediments were dredged prior to dam
removal, significant amounts of
sediment could remain on the reservoir
bottom and would eventually reach the
river and be transported downstream.
Effects on Aquatic Resources
The release of the contaminated
sediments currently stored behind Enloe
dam could have substantial effects on
spawning habitat, eggs, fry, juvenile and
adult anadromous and resident fish.
This effect could seriously damage
Chinook salmon essential fish habitat
(EFH) and UCR steelhead critical
habitat. The duration of the effects of
this release of sediments would depend
largely on flow and volume of material
captured in the channel as bedload.
Equilibrium would eventually be
achieved, and removing Enloe dam
would eventually provide for the free
flow of gravel, large woody debris, and
sediments downstream of the current
dam location. Increased gravel input
below Similkameen Falls would
improve the spawning habitat for
anadromous fish. Increased input of
large woody debris downstream of the
falls would also benefit anadromous and
resident fish by providing habitat
structure. Dam removal would also
affect the nature of the current reservoir
by returning it to a riverine state. Water
velocity in the reservoir area would
increase, while water temperature may
be slightly cooler. Slower water habitats
along the edges of the reservoir would
disappear as the water recedes into a
more defined channel. Fish species
composition would shift, as the
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
available habitat may select for fish that
prefer faster moving, cooler water.
Dam removal would have no effect on
anadromous fish passage in the
Similkameen River. There are no
anadromous fish found directly
downstream of the dam due to the
presence of Similkameen Falls, which
acts as a natural barrier to anadromous
fish passage. If the dam were removed,
resident fish would be able to move
freely from the current reservoir reach,
downstream to the rest of the river.
Effects on Terrestrial Resources
The change in water surface elevation
with dam removal would result in the
loss of existing wetland and riparian
habitat along the reservoir. The death of
large trees in the existing riparian forest
community would provide cavities and
snags that would be valuable wildlife
habitat components. Over time, riparian
and wetland vegetation would recolonize the edge of the river, replacing
the lost habitat.
The decrease in the water surface
elevation would likely make the existing
potential Ute ladies’-tresses habitat
along the reservoir too dry to support
the plant. New potential habitat for this
species would likely be created, but the
extent of the new habitat is unknown.
sroberts on DSK69SOYB1PROD with NOTICES
Effects on Recreation
Removing Enloe dam would change
the recreational opportunities associated
with the site. Returning the reservoir
above the dam into a free-flowing river
would affect a variety of recreation
opportunities including: Fishing,
boating, hiking, camping, and wildlife
watching. Dam removal will change
angling opportunities by changing
fisheries habitat from reservoir to
riverine and the associated fish species
available to anglers. Similarly, some
boaters seek flat water experiences
(motor or paddle) while others prefer
whitewater. Opportunities to engage in
flat water experiences are available at
nearby Lakes Wannacut, Palmer, and
Osoyoos. Hiking and camping
experiences are influenced by nearby
water bodies through the sounds of
rushing water or the opportunity to
swim in a reservoir. Additionally, the
flora and fauna associated with the site
would change, thus modifying the
species available for nature study.
Effects on Aesthetics Resources
Removal of Enloe dam would change
the aesthetic character associated with
the site. The current reservoir lakebed
would be dewatered, changing the
character of the former lakebed to a
vegetative environment with a freeflowing river. Fall flows would remain
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
at the falls. This new view would be
seen from the Loomis-Oroville road and
the Pacific Northwest National Scenic
Trail (Scenic Trail).
Effects on Cultural Resources
Removing the National Register-listed
Enloe dam would result in an adverse
effect on this historic property.
Additionally, removal of the dam could
result in the exposure of currently
inundated and as yet unidentified
cultural sites, including properties of
traditional religious and cultural
importance to the Colville. This action
could expose these resources to the
public, resulting in illicit artifact
collection and site vandalism.
Effects on Socioeconomics
Dam removal would likely result in a
negligible effect on the recreation and
tourism industry in Okanogan County.
Currently, fishing occurs primarily in
the lower reaches of the Similkameen
River, below the Enloe dam. Creation of
aesthetic and recreation resources due
to a shift from a reservoir to a riverine
environment would indirectly affect
recreational use of the project resources
and associated expenditures (such as, a
fee for a fishing license) and therefore,
the local economy should continue to
benefit from these expenditures.
With dam removal, there would be no
loss of property value to residents
because the majority of land ownership
within the Enloe Project boundary is
administered by federal or State
agencies and there are no residents that
border the Enloe dam.
3.3 Proposed Action and Action
Alternatives
In this section, we discuss the effect
of the project alternatives on
environmental resources. For each
resource, we first describe the affected
environment, which is the existing
condition and baseline against which
we measure effects. We then discuss
and analyze the site-specific and
cumulative environmental issues.
Only the resources that would be
affected, or about which comments have
been received, are addressed in detail in
this EA. We present our
recommendations in section 5.2,
Comprehensive Development and
Recommended Alternative.
3.3.1
Geologic and Soil Resources
3.3.1.1 Affected Environment
The complex structure and lithology
along the Similkameen River above and
below Enloe dam reflect its position at
the boundary of several distinct
physiographic and lithological regions.
The dam is located within the
PO 00000
Frm 00019
Fmt 4701
Sfmt 4703
28523
Cordilleran fold and thrust belt (Bayer,
1983) of northwestern North America.
In this region, successive episodes of
accretion, volcanic-arc mountain
building, and back-arc deposition have
created a complex physiography.
Enloe dam is situated on the
Similkameen River near the boundary of
the Cascade Range and Columbia
mountains physiographic provinces
where they converge around the 49th
parallel, separating the Canadian
Interior plateaus from the Lava plateaus
of eastern Washington and Oregon,
western Idaho, and northern California.
Geology
Along the narrow valley section of the
Similkameen River downstream of
Palmer Lake and upstream of Enloe
dam, the uplands are composed
primarily of Triassic-Permian
metasedimentary and metavolcanic
rocks of the Kobau Formation,
interspersed with Jurassic metavolcanic,
intrusive, and sedimentary rocks,
Eocene conglomerate and Eocene
intrusive dacite. Much of the valley and
sideslopes are mantled in Quaternary
glacial drift. The complicated structure
is the result of late Triassic or early
Jurassic accretion of Paleozoic and
Mesozoic volcanic archipelagos
accompanied by regional
metamorphism and plutonism,
subsequent overlayering of late
Cretaceous and early Tertiary volcanic
and sedimentary rocks, and Quarternary
erosion and deposition resulting from
continental glaciation.
In the immediate vicinity of the
impoundment, highly deformed
Triassic/Permian metamorphic rocks of
the Kobau and Spectacle formations are
unconformably overlain by Jurassic/
Cretaceous metaconglomerate and
metavolcanic rocks of the Ellemeham
Formation. These are in turn again
unconformably overlain by Eocene
sandstone and conglomerate, and the
latter are again unconformably overlain
by Quaternary glacial drift, colluvium,
and alluvial deposits.
Within the impoundment itself, from
Shanker’s Bend downstream to
approximately 1,600 feet above the dam,
the Similkameen River lies at the
boundary of the Kobau and Ellemeham
formations (between 1,600 feet above
and 1,000 feet below the dam). The
stretch of the river flows over Eocene
sandstone and conglomerate. Enloe dam
is located above the falls on resistant
Eocene granitic-clast conglomerate.
Downstream of the dam and falls, the
river again flows over Triassic/Permian
metamorphic rocks of the Kobau and
Spectacle Formations.
E:\FR\FM\17MYN2.SGM
17MYN2
28524
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
Soils
Most of the soils present within or
adjacent to the proposed project
boundary are classified as Nighthawk
loam or Nighthawk extremely stony
loam. Ewall loamy fine sand and Lithic
Xerochrepts–Nighthawk complex soils
and riverwash and rock outcrop areas
are also present within or adjacent to
the project boundary.
Nighthawk loam soils are formed in
glacial till deposited over shale and are
present just upstream of the dam and
upstream of Shanker’s Bend. These soils
are deep and well drained. Nighthawk
loam soils with 3 to 8 percent slopes are
characterized by slow runoff and
present a slight erosion hazard.
Nighthawk loam soils with 8 to 15
percent slopes are characterized by
medium runoff and present a high to
very high erosion hazard.
Nighthawk extremely stony loam soils
are generally formed in glacial till and
are located adjacent to the dam and
powerhouse and a portion of Shanker’s
Bend. These soils are deep and well
drained. Nighthawk extremely stony
loam soils with 8 to 25 percent slopes
are characterized by medium runoff and
present a high to very high erosion
hazard. When slopes reach 25 to 65
percent, these soils are characterized by
rapid to very rapid runoff and present
a high to very high erosion hazard.
Ewall loamy fine sand soils are
formed in glacial outwash sand and are
located in a small area immediately
downstream of Shanker’s Bend. These
soils are deep and excessively drained.
Ewall loamy fine sand soils with 0 to 15
percent slopes are characterized by slow
runoff, and present a slight erosion
hazard and a high soil-blowing hazard.
Lithic Xerochrepts soils are generally
shallow and well drained and are
located downstream of the dam. Lithic
Xerochrepts-Nighthawk complex soils
with 15 to 45 percent slopes are
characterized by medium runoff and
present a moderate erosion hazard.
Areas classified as riverwash and rock
outcrops are also present within or
adjacent to the project boundary.
Riverwash consists of coarse sand and
gravelly alluvium. Rock outcrop areas
contain little or no shallow soil
material.
sroberts on DSK69SOYB1PROD with NOTICES
Geologic Hazards
Enloe dam is located in an area of
historically low seismicity. Peak ground
acceleration with a 2 percent probability
of occurrence in 50 years is
approximately 0.16 times the force of
gravity (g) and peak ground acceleration
with a 10 percent probability of
occurrence in 50 years is approximately
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
0.07 g (U.S. Geological Survey (USGS),
2002). Localized faults have been
mapped in upland areas adjacent to
Similkameen Valley. An active fault is
present in the conglomerate bedrock
approximately 100 feet downstream of
the proposed tailrace outlet. The fault
does not displace overlying glacial drift,
which indicates that it has not been
active in more than 10,000 years.
No significant historical earthquakes
(magnitude 5.5 or intensity VI or larger)
have been recorded within 50 miles of
the dam since 1568 (USGS–NEIC, 2007
a, b).
During geological field mapping
conducted in December 2006, some
seepage was detected along joints and
bedding planes in the conglomerate and
sandstone that form the east abutment of
the dam (Christensen Associates, 2007).
Okanogan PUD proposes to grout and
stabilize these areas during the
construction of proposed facilities.
Some of the soils adjacent to the
Similkameen River present high to very
high erosion potential. Nighthawk
extremely stony loam soils that occur on
slopes in excess of 8 percent have a high
to very high erosion hazard. Nighthawk
extremely stony loam soils are present
upstream of Shanker’s Bend, adjacent to
portions of Shanker’s Bend, and on
either side of the river adjacent to the
dam, and proposed intake location.
Landslide or mass wasting hazards are
most likely to occur in these areas;
however, no signs of recent instability
were noted during the December 2006
geological field investigations
(Christensen Associates, 2007).
3.3.1.2 Environmental Effects
Okanogan PUD’s proposed landdisturbing activities associated with the
construction of project facilities (new
crest gates on Enloe dam, new east-bank
approach channel, new intake structure,
new intake canal, new penstock intake,
new penstocks, new powerhouse, new
tailrace channel, a short section of new
road, modifications to existing project
roads, and improvements to existing
recreation areas) could cause erosion
and sedimentation.
Okanogan PUD proposes to develop
and implement the ESCP (WQ–06) to
minimize the effects of land-disturbing
activities associated with construction
of new facilities, as well as
modifications and improvements to
existing facilities. The plan would also
be implemented during project
operation and maintenance. Okanogan
PUD also proposes to develop and
implement the CSMP (WQ–08) to
minimize sediment disturbance and
maximize sediment containment during
construction. In response to agencies’
PO 00000
Frm 00020
Fmt 4701
Sfmt 4703
comments and recommendations,
Okanogan PUD developed a Spill
Response Plan and a Storm Water
Pollution Prevention Plan (see section
3.3.2.2, Water Quality). The resource
agencies recommend that the sediment
excavated for project construction be
tested for arsenic, copper, cadmium,
zinc, and lead; and that the sediments
be stored on site until test results are
known so that sediments can be
disposed of properly.
BLM recommends that Okanogan
PUD develop and implement a Spoil
Disposal Plan prior to any construction
activities that may affect the BLMadministered public lands. The plan
would address disposal and/or storage
of waste soil and/or rock materials
(spoils) generated by road maintenance,
slope failures, and construction projects.
A Spoil Disposal Plan would include
provisions for the following: (1)
Identifying and characterizing the
nature of the spoils in accordance with
applicable BLM regulations; (2)
identifying sites, including locations of
the public lands, for the disposal and/
or storage of spoils so contamination of
water by leachate and surface water
runoff can be prevented; and (3)
developing and implementing
stabilization, slope reconfiguration,
erosion control, reclamation, and
rehabilitation measures.
Our Analysis
As we’ve said, land-disturbing
activities associated with project
construction, operation and
maintenance, and soils within the
project area are susceptible to soil
erosion and sedimentation. Excavated
materials could possibly contain higher
levels of arsenic, copper, cadmium,
zinc, and lead than is acceptable under
the criteria of the U.S. EPA’s Maximum
Contaminant Level.
Okanogan PUD’s proposal to finalize
and implement the ESCP (WQ–06) and
the CSMP (WQ–08) would lessen the
potential effects associated with landdisturbing activities during project
construction, modifications, and
improvements of project facilities, as
well as during project operation and
maintenance.
Our analysis of the Spill Response
and Storm Water Pollution Prevention
Plans are discussed in section 3.3.2.2,
Water Quality.
BLM recommends that Okanogan
PUD consult with BLM for the
development and implementation of a
Spoil Disposal Plan prior to any
construction activities that may affect
the BLM-administered public lands.
This plan would ensure that there
would be little or no effects from
E:\FR\FM\17MYN2.SGM
17MYN2
28525
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
excavated materials on water quality or
the surrounding environment within the
project boundary.
3.3.2
3.3.2.1
Water Quantity and Quality
Affected Environment
The drainage area of the Similkameen
River above Enloe dam is approximately
3,575 square miles most of which is in
British Columbia. The headwaters of the
Similkameen River Basin occur in
rugged terrain along the international
boarder and to the north. Much of the
upper basin is used for timber harvest,
mining, and grazing. The river valley
widens near Princeton, British
Columbia. Irrigation of agricultural land
is a primary water use upstream of
Nighthawk, Washington, located about 9
miles upstream of the project. Existing
uses in Canada include aquatic and
wildlife habitat, stock watering,
domestic water supply, agriculture and
mining.
Water Quantity
On average approximately 78 percent
of the annual flow on the Similkameen
River occurs from April through July
(table 2). Minimum flows occur between
late summer (August) and stay low
through early spring (March) until the
snowmelt season begins in April,
peaking in late May or early June. The
maximum average monthly flow was
24,900 cfs in June 1972, while the
minimum average monthly flow was
191 cfs in September 2003.
TABLE 2—SUMMARY OF SIMILKAMEEN RIVER FLOWS AT THE USGS NIGHTHAWK GAGE NO. 12442500, 1929–2005
(Source: Okanogan PUD, 2008a)
Month
Mean
Median
October ............................................
November ........................................
December ........................................
January ............................................
February ...........................................
March ...............................................
April ..................................................
May ..................................................
June .................................................
July ...................................................
August ..............................................
September .......................................
697
938
798
659
682
746
2,086
2,086
8,597
2,965
916
596
Maximum daily
576
681
576
540
551
600
1,390
1,390
7,580
2,220
764
514
Minimum daily
8,430
14,400
12,400
5,270
7,790
5,260
26,400
26,400
44,800
15,800
3,770
2,430
161
160
120
120
120
290
297
539
1,160
408
195
164
Note: The Nighthawk gage is located about 7 miles upstream of the project with a drainage area of about 3,550 square miles.
The maximum recorded average daily
flow was 44,800 cfs on June 1, 1972,
when the peak instantaneous flow was
estimated to be 45,800 cfs at a stage
height of 18.0 feet above the
approximate channel bottom. The
minimum recorded daily flow was 65
cfs on January 3, 1974; this abnormally
low flow was attributed to ice effects.
The mean annual flood (at the
Nighthawk gage), between 1929 and
2005, was 16,100 cfs. Annual maximum
mean daily discharges range from a low
of 4,590 cfs (June 8, 1941) to a high of
44,800 (June 1, 1972). The water level
recorded was 13 feet above the spillway
crest at Enloe dam during the 1972
flood. The calculated return period of
the 1972 flood is approximately 180
years.
Annual instantaneous peak flows at
the Nighthawk gage have occurred
almost exclusively (except on October
21, 2003) during spring and early
summer for the period of record. The
earliest recorded peak event occurred on
April 26, 1934, while the latest occurred
on June 23, 1967. The mean/median
peak flow day for the period of record
was May 28, although for the last 20
years (1987–2006), the mean/median
peak flow day occurred about one week
earlier (May 22). However, winter floods
associated with the inland penetration
of coastal storms have occasionally been
of similar magnitude to these spring and
early summer freshets. The winter
floods, although less common, are
usually associated with ice flows and
snowmelt runoff.
Certified water rights on the
Similkameen River are listed in table 3.
Okanogan PUD holds senior water rights
on the river, a 1,000-cfs water right with
a priority date of 1912 for power
generation purposes. The proposed
project maximum hydraulic capacity is
1,600 cfs. Thus, Okanogan PUD would
need to obtain an additional 600-cfs
water right for non-consumptive use in
order to divert the maximum hydraulic
capacity for the project.
TABLE 3—SIMILKAMEEN RIVER WATER RIGHTS
(Source, Okanogan PUD, 2008a)
Status
CCVOL1P243 ............
sroberts on DSK69SOYB1PROD with NOTICES
Document No.
Priority
(year)
Certificate ...........
(Change) ............
Certificate ...........
Certificate ...........
Certificate ...........
Certificate ...........
Certificate ...........
Certificate ...........
Certificate ...........
S3–22053C
S4–26618C
SWC00723
SWC03557
SWC06242
SWC09018
SWC09834
................
................
................
................
................
................
................
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
Flow
(cfs)
Acre-feet/year
1912
PO 00000
1,000
1973
1980
1930
1948
1955
1955
1966
1.5
1
0.5
0.05
0.05
2
1.4
Purpose
Frm 00021
Fmt 4701
Sfmt 4703
Acres irrigated
Owner
80
50
12
7.5
3
100
70
Okanogan
PUD
Private
Private
Private
Private
Private
Private
Kernan
Farms
PO
372
202
—
—
—
400
280
E:\FR\FM\17MYN2.SGM
IR, SW
IR, SW
IR
IR
DS, IR
IR
IR
17MYN2
28526
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
TABLE 3—SIMILKAMEEN RIVER WATER RIGHTS—Continued
(Source, Okanogan PUD, 2008a)
Document No.
Priority
(year)
Status
Flow
(cfs)
Acre-feet/year
Total of all Certificates: ..................................................
6.5
Purpose
1,254
Acres irrigated
Owner
322.5
Notes: DS—Domestic
IR—Irrigation
SW—Stock water
PO—Power
Enloe reservoir occupies a narrow,
channelized basin and has a very high
inflow/volume ratio; therefore, the
reservoir is more river-like than lake-
like in character. The mean hydraulic
residence time is estimated to be about
2.4 hours for the mean annual flow of
2,290 cfs, 45 minutes for the mean
annual peak flow of 16,100 cfs, 7.3
hours for the mean September flow of
596 cfs, and more than 20 hours for
flows less than 200 cfs (table 4).
TABLE 4—ENLOE RESERVOIR CHARACTERISTICS AT EXISTING AND PROPOSED OPERATIONS AND SPILLS
(Source: Okanogan PUD, 2008a)
Location
Reservoir
elevation
(feet msl)
sroberts on DSK69SOYB1PROD with NOTICES
At existing dam crest
elevation ...................
At mean annual flow of
2,290 cfs ...................
During proposed lowflow project operations ........................
During spill periods ......
Reservoir
length
(miles)
17:06 May 16, 2011
Reservoir
surface area
(acres)
Reservoir
mean depth
(feet)
Reservoir
maximum
depth
(feet)
Reservoir
volume
(acre-feet)
1,044.3
2.0
4.1
60.1
8.4
54.3
507
1,046
2.1
4.2
67.1
9.1
56.0
613
1,048.3
1,050.3
2.2
2.3
4.8
4.9
76.6
88.3
10.1
10.6
58.3
60.3
775
938
Most of the bed-surface substrate is
medium sand, with a typical (median)
diameter of 0.4 millimeter (mm); gravel
is present at the upstream end of the
reservoir near Shanker’s Bend and at
depth within the accumulated sediment.
The volume of stored sediment is
estimated to be around 2.4 million cubic
yards.
Groundwater in this sub-basin is
primarily supplied from glacial and
alluvial deposits in the lower valley
areas. The Similkameen River once
flowed southward through the valley
now occupied by Palmer Lake and
Sinlahekin Creek. During the last
glaciation, the river was rerouted
through several temporary channels
until it finally settled into its current
channel as the glacier retreated. Glacial
and alluvial deposits in the original
channel and the temporary channels are
several hundred feet thick with
moderate to high yield aquifers. The
alluvial and glacial deposits are
composed largely of fine sand, silt, and
clay, with some thin lenses of coarse
sand and gravel. Permeability and yields
can be quite high.
In places where there is a lack of
glacial or alluvial deposits, groundwater
is scarce. Subsurface rock consists of
metamorphic, granitic, and consolidated
VerDate Mar<15>2010
Reservoir
shoreline
length
(miles)
Jkt 223001
sedimentary rock with low permeability
and porosity.
During low flow periods, very little
flow is added to the river between the
USGS Nighthawk gage (RM 15.8) and
the Washington DOE flow gage at RM
5.0, indicating that groundwater
discharge is not a significant contributor
to flow in the lower Similkameen River.
The City of Oroville withdraws its
municipal water supply from a well
field located at the confluence of the
Similkameen and Okanogan rivers. The
wells are considered to be in continuity
with the Similkameen River.
Groundwater would not be affected by
the project regardless of its location
relative to the river or degree of
continuity because the project would
operate in a run-of-river mode and
would not affect flows or recharge.
Water Quality
This section describes existing water
quality in the lower Similkameen River
and focuses on water quality
characteristics that could be influenced
by project construction and operation:
Temperature, DO concentration, total
dissolved gas concentration, and
contaminants associated with river
sediments.
PO 00000
Frm 00022
Fmt 4701
Sfmt 4703
Water Temperature
Water temperatures in the
Similkameen River upstream of the
project can exceed freshwater aquatic
life criteria during the summer months,
and water temperatures generally
increase from upstream to downstream.
Okanogan PUD conducted water
temperature monitoring in the project
area from late spring through early fall
of 2006 to characterize potential project
effects on the water temperature regime.
The monitoring study was designed to
measure changes in water temperatures
in the Similkameen River as it flowed
through the project area.
One of the designated uses for the
Similkameen River is salmonid
spawning, rearing, and migration. The
aquatic life maximum water
temperature criterion set by Washington
DOE to protect this use is 17.5 degrees
Celsius (°C), measured by the 7-day
average of the daily maximum
temperatures (7-DADMax). When a
water body’s temperature is warmer
than the criterion and that condition is
due to natural conditions, human
actions (considered cumulatively) may
not cause the 7-DADMax temperature of
that water body to increase more than
0.3 °C. In applying this standard to
hydroelectric projects, Washington DOE
has interpreted natural conditions to be
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
season, and all stations showed a
similar trend in temperatures. The 7DADMax temperatures decreased after
August 4, although remained above the
17.5 °C criterion for most of the
remainder of the monitoring period.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00023
Fmt 4701
Sfmt 4703
June through mid-September, with
additional exceedances in lateSeptember (figure 2). The highest
temperature of 26.9 °C was recorded
both at China Rock (RM 12.2) upstream
from the project site, and at the bridge
in Oroville (RM 5.3) downstream from
the project site.
BILLING CODE 6717–01–P
Figure 3 plots the 7-DADMax
temperatures at the upper end of the
reservoir (RM 10.3) and the lower end
of reservoir (RM 9.1).
E:\FR\FM\17MYN2.SGM
17MYN2
EN17MY11.001
salmon and at fry emergence for salmon
and trout. A maximum 0.3 °C increase
also applies to the seasonal criteria for
spawning and incubation. This
requirement is applied to the
Similkameen River from February 15
through June 15.
The 2006 monitoring results showed
that the Similkameen River exceeded
the 17.5 °C criterion both upstream and
downstream from Enloe dam from late
Comparisons of 7-DADMax
temperatures at different monitoring
stations indicate that water
temperatures did not increase through
the project area by more than 0.3 °C at
any time during the 2006 monitoring
sroberts on DSK69SOYB1PROD with NOTICES
the water temperature regime before
construction of any dams or other
human influences.
Washington DOE has identified the
Similkameen River below Enloe dam as
a water body requiring special
protection for salmonid spawning and
incubation (Okanogan PUD, 2008a).
This special criterion identifies a
maximum 7-DADMax temperature of 13
°C at the initiation of spawning for
28527
28528
sroberts on DSK69SOYB1PROD with NOTICES
BILLING CODE 6717–01–C
Dissolved Oxygen
The Water Quality Standards for
Surface Waters for Washington state that
the 1-day minimum DO concentration
for salmonid spawning, rearing, and
migration is 8.0 milligram per liter (mg/
L) (Chapter 173–201A Washington
Administrative Code). When a water
body’s DO concentration is lower that
this criterion and that condition is due
to natural conditions, human actions
considered cumulatively may not cause
the concentration to decrease more than
0.2 mg/L.
Okanogan PUD measured DO profiles
on September 14 and 15, 2006, in the
vicinity of Enloe dam. All
measurements were above the 8.0 mg/L
minimum water quality standard. As
expected, the DO concentrations were
higher where colder water was
encountered in the morning hours
below the dam and at China Rock
upstream of the reservoir. Warmer water
and lower DO concentrations were
measured in the afternoon hours in the
reservoir pool above the dam.
Total Dissolved Gases
The Water Quality Standard for
Surface Waters for Washington State
requires that TDG shall not exceed 110
percent of saturation at any point of
VerDate Mar<15>2010
17:53 May 16, 2011
Jkt 223001
sample collection (Chapter 173–201A
Washington Administrative Code). The
TDG criteria contained in the standards
do not apply when the stream exceeds
the 7-day, 10-year frequency flood. The
standards provide allowances for the
criteria to be adjusted to aid fish passage
over hydroelectric dams when
consistent with a Washington DOE
approved gas abatement plan. However,
this allowance does not apply to the
Enloe Project because it would not
provide spill to aid fish passage.
TDG concentrations measured
between May 26 and 30, 2006, were
below the 110 percent saturation water
quality criterion in the lower reservoir
(RM 9.1) and between Enloe dam and
the falls (RM 8.9), but exceeded the
criterion below the falls (RM 8.8) and
below the railroad trestle at the mouth
of the canyon downstream from the
project area (RM 6.7). Flows ranged
between 10,700 cfs at Nighthawk and
12,100 cfs at Oroville on May 26, 2006,
to 8,780 cfs at Nighthawk and 9,640 cfs
at Oroville on May 30, 2006. TDG levels
increased by 3 to 7 percent of saturation
after flowing over Enloe dam but
remained below the water quality
criterion, with mean hourly TDG levels
ranging from 106.1 to 108.7 percent of
saturation between the dam and the
falls.
PO 00000
Frm 00024
Fmt 4701
Sfmt 4703
TDG increased substantially after
flowing over the falls, increasing by an
additional 12 to 14 percent of
saturation. Downstream of the falls,
mean TDG levels ranged from 118.5 to
120.7 percent of saturation. This TDG
increase below the falls is due to the
additional turbulence caused by the
falls and the plunging flow into a deep
pool where the increased pressure
causes bubbles to dissolve. Near the
railroad trestle located about 2.2 miles
downstream of the falls, the mean TDG
saturation was slightly lower (115.3 to
116.2 percent of saturation), but still
remained above the criterion. Table 5
provides the results of Okanogan PUD’s
TDG sampling.
A generalized longitudinal profile
adapted from a 1934 USGS survey
indicates that the river drops 46 vertical
feet in the 1.6-mile reach upstream from
the dam. This steep gradient suggests
that historically turbulent flows in the
reservoir reach before impoundment
likely created aeration and may have
contributed to increased TDG saturation
above the 110 percent criterion during
high flows. Thus, TDG saturation above
110 percent was likely a naturally
occurring condition below the falls
before the dam was built.
E:\FR\FM\17MYN2.SGM
17MYN2
EN17MY11.002
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
28529
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
Contaminated Sediments
Contamination from historical mining
operations in the Similkameen River
watershed has resulted in arsenic
concentrations exceeding water quality
criteria in samples from Chopaka Bridge
in British Columbia (RM 36.1) and
Oroville, Washington (RM 5.0)
(Peterschmidt and Edmond, 2004;
Johnson, 2002). Washington DOE has
completed a total maximum daily load
(TMDL) evaluation and prepared a draft
plan to address the arsenic
contamination. The loading capacity for
the river was set equal to the natural
background concentration of arsenic
(i.e., 0.4 to 0.6 microgram per liter total
recoverable arsenic), because arsenic
levels naturally exceed water quality
criteria. The greatest amount of arsenic
loading identified by the TMDL
evaluation was caused by resuspension
of sediments in the vicinity of Palmer
Creek at RM 20, approximately 10 miles
upstream from the project area.
TABLE 5—SUMMARY OF TOTAL DISSOLVED GAS MEASUREMENTS NEAR ENLOE DAM FROM MAY 26–30, 2006
[Source: Okanogan PUD, 2008a]
One-hour mean TDG saturation
(percent)
Time and location
May 26 and
27
a.m.:
Lower reservoir .........................................................................................
Between dam and the falls .......................................................................
Below the falls ..........................................................................................
Below railroad trestle ................................................................................
p.m.:
Lower reservoir .........................................................................................
Between dam and the falls .......................................................................
Below the falls ..........................................................................................
Below railroad trestle ................................................................................
An analysis of shallow sediment core
samples for trace metals, performed for
the Colville, confirmed arsenic
contamination in the Similkameen River
and Palmer Creek upstream from
Nighthawk, Washington. Copper also
exceeded a Colville sediment quality
standard in several samples, and
cadmium exceeded the standard in one
sample.
There are no established state
regulatory criteria for chemical
May 28
May 29
May 30
103.4
107.6
129.7
116.2
101.9
........................
119.6
115.9
102.0
106.2
118.9
115.6
101.1
106.8
118.5
115.3
102.0
108.7
120.7
116.2
103.3
........................
120.6
116.1
103.3
106.1
120.0
115.8
102.5
106.8
119.4
116.0
contaminants in freshwater sediments;
however, several sediment quality
values have been used to indicate
potential toxic effects to aquatic life.
The current Colville Tribal Code
contains sediment cleanup levels both
for the protection of human health and
for the protection of sediment-dwelling
organisms. The Colville adopted
cleanup screening levels for eight
metals, including arsenic, cadmium,
and copper. Washington DOE also set
non-regulatory sediment quality values
and cleanup screening levels for
freshwater sediment (Michelson, 2003,
in Okanogan PUD, 2008a). Okanogan
PUD collected sediment samples in
2007 that were analyzed for pesticides,
arsenic, cadmium, and copper. The
sample results, along with the Colville
criteria and Washington DOE nonregulatory sediment quality values are
presented for comparison in table 6.
TABLE 6—SUMMARY OF PRELIMINARY ENLOE DAM SEDIMENT TRACE METALS RESULTS
[Source: Okanogan PUD, 2008a, as modified by staff]
Milligrams per kilogram (mg/kg)
River mile
(RM)
PMX sample ID
ARI sample ID
Depth (feet)
Arsenic
Cadmium
Copper
Shallow Core Samples:
EDSG01 ...............................
EDSG02 ...............................
07–16068–LK08A ........................
07–16069–LK08B ........................
0 to 1 ............
0 to 1 ............
15.7
23.5
a 0.3U
0.3U
22.3
33.3
9.4
9.0
9.0
9.0
07–16070–LK08C
07–16071–LK08D
07–16072–LK08E
07–16073–LK08F
.......................
.......................
........................
........................
0
0
0
0
11.2
20.4
10.0
9.2
0.2
0.3U
0.3U
0.3U
18.4
27.9
17.1
17.2
9.0
9.0
9.0
9.0
9.0
07–16099–LK13A
07–16100–LK13B
07–16101–LK13C
07–16102–LK13D
07–16103–LK13E
........................
........................
.......................
.......................
........................
0.0
5.0
6.6
0.0
6.6
8.8
29.3
10.3
7.0
8.6
0.2U
0.4
0.2U
0.2U
0.2U
16.3
47.5
16.2
13.6
16.0
10.6
10
VanVeen Grab Samples:
EDSG03 ...............................
EDSG05 ...............................
EDSG06 ...............................
EDSG08 b .............................
to
to
to
to
0.5
0.5
0.5
0.5
.........
.........
.........
.........
sroberts on DSK69SOYB1PROD with NOTICES
Freeze Core Samples:
EDSC04–0–4 ........................
EDSC04–4–8 ........................
EDSC04–8–12 .....................
EDSC08–0–4 c .....................
EDSC08–8–12 d ...................
to
to
to
to
to
5.0
6.6
8.0
5.0
8.0
......
......
......
......
......
Surface Grab Samples Below Enloe Dam (RM 8.9):
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00025
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
28530
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
TABLE 6—SUMMARY OF PRELIMINARY ENLOE DAM SEDIMENT TRACE METALS RESULTS—Continued
[Source: Okanogan PUD, 2008a, as modified by staff]
Milligrams per kilogram (mg/kg)
River mile
(RM)
PMX sample ID
07–16081–LK11A .................
07–16082–LK11B .................
07–16083–LK11C ................
07–16088–LK11H e ..............
07–16084–LK11D ................
07–16085–LK11E .................
07–16086–LK11F .................
07–16087–LK11G ................
8.7
8.2
7.6
7.6
6.8
6.6
6.1
5.7
ARI sample ID
Depth (feet)
Arsenic
SR–1
SR–2
SR–3
SR–8
SR–4
SR–5
SR–6
SR–7
...........................................
...........................................
...........................................
...........................................
...........................................
...........................................
...........................................
...........................................
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
to
to
to
to
to
to
to
to
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
Cadmium
Copper
......
......
......
......
......
......
......
......
24.8
9.3
10.6
10.4
9.1
8.2
9.5
13.1
0.3
0.3U
0.2U
0.3U
0.3U
0.3U
0.3U
0.3U
31.8
16.0
15.9
14.4
15.1
12.8
15.1
17.3
......................
......................
......................
......................
20
51
9.79
33
0.6
1
0.99
4.98
80
830
31.6
149
Freshwater Sediment Quality Values:
Sediment Quality Standard f
Cleanup Screening Level f ....
Cleanup Screening Level g ...
Probable Effect Concentration h.
....................
....................
....................
....................
......................................................
......................................................
......................................................
......................................................
Notes:
a Results with ‘‘U’’ were not detected in the sample at the accompanying detection limit.
b Duplicate of EDSG06.
c Duplicate of EDSC04–0–4.
d Duplicate of EDSC04–8–12.
e Duplicate of SR–3.
f Michelsen, 2003.
g Colville, 2003.
h MacDonald et al., 2000.
Cadmium was detected in 3 of 15
samples, but in all cases was below the
Colville criterion and Washington DOE
sediment quality values (table 6).
Pesticides were not detected in any
sample.
Copper was detected in all samples,
and in all cases was below sediment
quality values. Three samples exceeded
the Colville copper criterion, but were
below the sediment quality standard
proposed by Michelsen (2003).
Arsenic exceeded the Colville
criterion in 11 of the 15 samples; and 4
of 15 exceeded Washington DOE’s lower
sediment quality value. All arsenic
concentrations were below levels
known to cause adverse effects;
however, several of the arsenic
concentrations were in the range where
there could be a potential for adverse
effects. Samples from the 2007 study
contained higher concentrations of each
trace metal than corresponding samples
from the 2002 study (Johnson, 2002).
This was likely due to the 2007
sediment samples containing more fine
organic particles mixed with the sand
and silt.
Fine organic particles were most
evident in the 2007 study in a freeze
core sample taken from between 5.0 and
6.6 feet deep near the site of the new
intake structure. This sample had a
darker color, finer texture, an organic
odor, visible organic material in various
stages of decomposition, and higher
concentrations of arsenic and copper.
This core sample was collected from the
area of the reservoir where buried
sediments are most likely to be
disturbed during project construction.
To a lesser degree, deposits of fine
organic material were observed in a
patchy distribution in areas throughout
the reservoir and on sandbars
downstream from Enloe dam.
In addition to the analysis of
contaminant concentrations in the
sediment, the same contaminants were
analyzed in the water column using the
Dredging Elutriate Test to mimic water
column concentrations that could occur
if sediments were disturbed by dredging
(table 7). As with the bulk sediment
samples, pesticides were not detected in
any elutriate sample. Cadmium was
detected at the detection limit in several
samples, but was well below the water
quality criteria in all samples. Arsenic
was detected in all samples, but was
also well below the water quality
criteria. Copper was detected in all
samples, and exceeded both chronic and
acute criteria in 5 of the 8 primary
samples. All elutriate samples exceeded
the arsenic and copper concentrations
in the ambient water sample from midreservoir.
TABLE 7—SUMMARY OF PRELIMINARY ENLOE DAM SEDIMENT ELUTRIATE RESULTS
[Source: Okanogan PUD, 2008a]
Microgram per liter (μg/L)
PMX sample ID
ARI sample ID
Depth (feet)
sroberts on DSK69SOYB1PROD with NOTICES
Arsenic
Cadmium
Copper
Shallow Core Samples:
EDSG01 ............................................
EDSG02 ............................................
07–16494–LK86A ...................................
07–16495–LK86B ...................................
0 to 1 ............
0 to 1 ............
12.5
29.1
0.2
0.2
12.1
28.2
VanVeen Grab Samples:
EDSG03 ............................................
07–16496–LK86C ...................................
0 to 0.5 .........
5.6
a 0.2U
4.6
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00026
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
28531
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
TABLE 7—SUMMARY OF PRELIMINARY ENLOE DAM SEDIMENT ELUTRIATE RESULTS—Continued
[Source: Okanogan PUD, 2008a]
Microgram per liter (μg/L)
PMX sample ID
ARI sample ID
Depth (feet)
Arsenic
EDSG05 ............................................
EDSG06 ............................................
EDSG08 b .........................................
Cadmium
Copper
07–16497–LK86D ...................................
07–16498–LK86E ...................................
07–16499–LK86F ....................................
0 to 0.5 .........
0 to 0.5 .........
0 to 0.5 .........
20.9
7.5
6.4
0.2
0.2U
0.2U
28.1
9.9
6.5
07–16099–LK13A
07–16100–LK13B
07–16101–LK13C
07–16102–LK13D
07–16103–LK13E
0.0
5.0
6.6
0.0
6.6
......
......
......
......
......
5.3
53.6
6.3
5.1
7.7
0.2U
0.2
0.2U
0.2U
0.2U
4.7
52.2
4.6
3.4
6.2
EDW01 ....................................................
3.5 ................
3.6
0.2U
0.9
.................................................................
.................................................................
......................
......................
360
190
e 1.82
e 9.2
e 0.64
e 6.5
Freeze Core Samples:
EDSC04–0–4 ....................................
EDSC04–4–8 ....................................
EDSC04–8–12 ..................................
EDSC08–0–4 c ..................................
EDSC08–8–12 d ................................
...................................
...................................
...................................
...................................
...................................
to
to
to
to
to
5.0
6.6
8.0
5.0
8.0
Ambient Water Sample:
07–16054–LK07A .............................
Water Quality Criteria:
Acute, aquatic life .............................
Chronic, aquatic life ..........................
Notes:
a Results with ‘‘U’’ were not detected in the sample at the accompanying detection limit.
b Duplicate of EDSG06.
c Duplicate of EDSC04–0–4.
d Duplicate of EDSC04–8–12.
e Criteria adjusted for 52 mg/L hardness (Washington DOE, 2005).
3.3.2.2
minimum flow of 400 cfs during winter
months up to a high flow of 3,400 cfs
in the late spring/early summer.
Environmental Effects
sroberts on DSK69SOYB1PROD with NOTICES
Water Quantity
The existing dam has an uncontrolled
spillway that passes all inflow.
Okanogan PUD proposes to install new
crest gates on the dam and install an
intake channel adjacent to the dam crest
to divert river flows to a new
powerhouse and tailrace that would
return flows to the Similkameen River
approximately 480 feet downstream of
the dam. The tailrace would discharge
downstream of the falls, which is
located approximately 370 feet
downstream of the dam. Okanogan PUD
proposes to operate the project in a runof-river mode with no water storage for
hydropower purposes; however, it has
agreed to comply with interim ramping
rate recommendations by Interior,
Washington DFW, NMFS, and American
Rivers et al. (see section 3.3.3.2, Aquatic
Resources, Environmental Effects).
Okanogan PUD proposes to provide
minimum flows of 10 or 30 cfs in the
370-foot-long bypassed reach. American
Rivers et al. recommends flow releases
to the bypassed reach to adequately
protect aquatic resources in the river
and other designated beneficial uses in
accordance with Washington state law
for the Similkameen River.14 According
to the code, this would consist of a
14 Washington Administrative Code WAC 173–
549–020 Establishment of minimum instream flows.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
Our Analysis
Because the project would operate in
a run-of-river mode with only minor
flow variation caused by ramping rate
restrictions, there would be no effect on
the flow regime downstream of the
project, compared to historical
conditions. The issue of minimum flow
releases for the bypassed reach is
discussed below in this section and in
sections 3.3.3.2, Aquatic Resources,
Environmental Effects, and 3.3.7.2,
Aesthetic Resources, Environmental
Effects.
Water Quality
Water Temperature (WQ–01)
Okanogan PUD proposes to operate
the crest gates to maintain the reservoir
levels between elevation 1,048.3 feet
and 1,050.3 feet msl 99 percent of the
time. The proposed crest gate operation
would result in a small increase in the
reservoir surface area (less than 12
percent) and larger increases in
reservoir average depth (20 percent) and
volume (21 percent) up to 10 months a
year and may affect water temperature
in the project reservoir. Okanogan PUD
proposes to monitor water temperature
at three locations for 5 years to
determine if the crest gate operation
PO 00000
Frm 00027
Fmt 4701
Sfmt 4703
causes an increase in the 7–DADMax
water temperature in the reservoir
compared to the river upstream of the
reservoir.
Interior, NMFS, and American Rivers
et al. comment that increased reservoir
size and area would result in more
exposure to the sun, which would result
in higher water temperatures above the
dam and downstream of the dam,
potentially affecting anadromous fish
habitat. Interior recommends a study of
the effects of the Enloe Project on water
temperature. NMFS recommends that
water temperatures be monitored for 5
years with annual reporting, and
American Rivers et al. requests more
information about the effects of the
project on temperature and water
quality.
The British Columbia Ministry of
Environment (Ministry of Environment)
comments that the project would not
adversely affect water temperature in
Canadian waters and that water quality
standards would not be compromised as
a result of project operations. The
Ministry of Environment supports
Okanogan PUD’s measures to monitor
water temperature in the reservoir and
compensate for the potential decrease in
production by including habitat
enhancements, tailrace relocation, and
entrainment studies.
E:\FR\FM\17MYN2.SGM
17MYN2
28532
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
Our Analysis
sroberts on DSK69SOYB1PROD with NOTICES
Results of vertical temperature profile
measurements (September 14 and 15,
2006) show that water temperature
varied less than 0.6 °C from near surface
to near bottom of the existing reservoir,
indicating virtually no stratification in
the reservoir during late summer
(Okanogan PUD, 2008a). Comparisons of
7-DADMax temperatures indicated that
water temperatures did not increase
through the project area by more than
0.3 °C at any time during the 2006
monitoring study (see figure 2), and
decreased throughout the project area
after reaching peak levels in late July.
Based on these results, it appears that
solar radiation did not warm the
existing reservoir pool any more than
the relatively shallow river reaches,
with similar temperature patterns
among all stations. Substantial warming
probably did not occur because the
existing reservoir is narrow and riverlike in character. The proposed project
would increase the reservoir surface
area by about 27 percent, comparing the
existing reservoir at dam crest elevation
to the proposed reservoir level during
low-flow operations (see table 4). The
actual increase in area would be from
60 to 76 acres, and the reservoir would
remain a relatively small, narrow
reservoir, unlikely to experience
significant additional solar warming. In
addition, the reservoir mean depth and
volume would increase (table 4), which
would act to counter any solar warming,
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
in that more heat input would be
required to effect a change in
temperature. Okanogan PUD also
proposes planting riparian vegetation
along the reservoir to provide shading
(discussed in section 3.3.4.2, Terrestrial
Resources). Additional shading would
reduce the amount of surface water
exposed to solar warming. All these
factors would act to minimize any heat
gain and prevent any increase in water
temperatures during the summer lowflow months. The greatest increase in
reservoir size would occur during highflow spill periods (table 4), but reservoir
residence time would be short (only 45
minutes at the mean annual peak flow
of 16,100 cfs), so there would be little
opportunity for solar warming, even if
warm, sunny conditions occurred
during high-flow periods, which is not
common.
Studies conducted in the
Similkameen River downstream of the
dam indicate that water temperatures
naturally increase during the summer
with potential for lethal effects on
salmonids (Okanogan PUD, 2008a).
Based on our analysis, we conclude that
construction and operation of this runof-river hydroelectric project would
have little effect on the existing water
temperature pattern in the river, or
affect compliance with water quality
standards for water temperature.
Okanogan PUD would monitor water
temperature for at least the first 5 years
following license issuance to determine
if the proposed increase in reservoir
PO 00000
Frm 00028
Fmt 4701
Sfmt 4703
elevation and surface area are having an
influence on water temperature in the
reservoir and Similkameen River
downstream of the dam. This measure
would provide a water quality benefit.
Development of the monitoring sites
would be done after consultation with
the TRG. The annual data resulting from
this study could be used for adaptive
management purposes and to design any
required mitigation for any adverse
effects on water temperature that may be
observed. It would be appropriate for
the Okanogan PUD to file a report with
the Commission at the end of five years
evaluating the need for continued
monitoring and/or measures would
ensure that the water quality is
maintained at a level that will support
aquatic resources at the project.
Dissolved Oxygen (WQ–02 Through
WQ–04)
Okanogan PUD proposes to inject air
into the turbine draft tubes to increase
DO in the plunge pool/tailrace, which
may be used by anadromous fish as a
holding pool and thermal refugia during
the critical summer season (figure 4).
The aeration vents would not be used
during high spring flows when high
TDG is a concern and DO
concentrations are not low. Okanogan
PUD would monitor DO levels during
the first 5 years of project operations to
determine the optimal time after high
flows have receded in the early summer
to provide aeration in the draft tubes.
E:\FR\FM\17MYN2.SGM
17MYN2
28533
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
Okanogan PUD proposed to locate the
project tailrace so that the discharged
water circulates in the plunge pool
below the falls. The average annual
tailrace flows, as simulated by
Okanogan PUD, would be similar in wet
and normal water years (table 8).
NMFS recommends that at the start of
project operations, Okanogan PUD
should monitor DO concentrations at
the powerhouse intake and below the
falls and continue monitoring for the
term of the license.
TABLE 8—SIMULATED AVERAGE ANNUAL TAILRACE FLOW FOR THREE NORMAL AND THREE WET WATER YEARS
[Source: Okanogan PUD, 2009c]
1989 ...............................................................
1993 ...............................................................
2000 ...............................................................
sroberts on DSK69SOYB1PROD with NOTICES
Our Analysis
During the warm summer months, DO
is naturally low in the Similkameen
River. DO levels upstream and
downstream of the project can drop
below 8 mg/L, which is the minimum
state standard set to protect salmonid
fisheries. Currently, water passing over
Enloe dam goes over the falls, which
increases the DO concentration by about
1 mg/L, although this may vary
depending on river flow and water
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
842
896
1,051
1991
1996
1997
temperature. Under Okanogan PUD’s
proposal, water that is diverted for
generation would be routed around the
falls and would not be naturally aerated
as now occurs. Okanogan PUD’s
proposal for draft tube aeration would
ensure protection of DO, despite loss of
aeration by diverting flows into the
powerhouse rather than over the falls.
Monitoring below the powerhouse
would assess the effectiveness of this
measure and would ensure that water
discharged to the project tailrace would
PO 00000
Frm 00029
Fmt 4701
Tailrace flow
(cfs)
Wet years
Sfmt 4703
1,406
1,298
1,066
meet state standards of 8 mg/L DO or
higher at all times.
Discharging powerhouse flows into
the plunge pool would provide
circulation to prevent stagnation and
water quality degradation during the
low flow summer months. The
circulation pattern in the plunge pool
may change as the tailrace flows would
enter the pool approximately 90 feet
downstream from the falls at an angle.
However, this change in pattern should
not affect water quality or substantially
E:\FR\FM\17MYN2.SGM
17MYN2
EN17MY11.003
Tailrace flow
(cfs)
Normal years
28534
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
affect fish distribution in the pool.
During high flow periods when water is
passing over the dam and the falls, as
well as through the powerhouse, flow
patterns in the plunge pool would be
more similar to current conditions,
although there would be some reduced
flow over the falls, and thus potentially
reduced TDG levels. DO levels would be
high during high-flow periods and
heavy spillage over the dam and falls.
Okanogan PUD’s proposal to monitor
DO levels during the first 5 years of
project operations to determine the
optimal time—after high flows have
receded in the early summer—to
provide aeration in the draft tubes
would not meet the NMFS
recommendation to monitor DO over the
term of the license.
Monitoring DO during the first 5 years
of operation would provide good
information on possible project effects
on DO, but if water quality standards are
not met regularly, additional monitoring
and alternative measures may provide
additional useful information.
Consultation with the TRG as to the
need for an extension of the monitoring
period, as well as in determining the
location of the DO monitoring sites
would ensure the proposal addresses
the concerns of the agencies and the
Commission.
Total Dissolved Gases (WQ–02 and WQ–
04, FISH–09)
TDG concentrations measured
between May 26 and May 30, 2006,
were below the 110 percent saturation
water quality criterion in the lower
reservoir (RM 9.1) and between the dam
and the falls (RM 8.9), but exceeded the
criterion below the falls (RM 8.8) and
below the railroad trestle at the mouth
of the canyon downstream from the
project area (RM 6.7). TDG
concentrations increased substantially—
an additional 12 to 14 percent of
saturation—in water flowing over the
falls. The increase in TDG below the
falls is due to the additional turbulence
caused by the falls and plunging flow
into a deep pool where the increased
pressure causes air bubbles to dissolve
into solution.
Resident and anadromous fish can be
negatively affected by supersaturated
TDG levels. The tolerance of
anadromous salmon and steelhead to
TDG supersaturation varies greatly by
life stage. Eggs appear to be quite
resistant to high TDG levels, while yolksac fry are particularly vulnerable
(Weitkamp and Katz, 1980). Juvenile
fish appear more sensitive to TDG
saturation with increasing size.
Okanogan PUD proposes to divert
water from the reservoir, through the
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
turbines, and discharge flows
downstream of the falls into the plunge
pool. Okanogan PUD would monitor
TDG concentrations at the project intake
and in the plunge pool below the falls
for a 5-year period after license issuance
to determine the effects of the proposed
operations on TDG levels at these
locations.
NMFS concurs with the proposal and
adds that Okanogan PUD should
maintain the ability to monitor TDG for
the term of the license.
The Ministry of Environment
comments that TDG levels are expected
to decrease as a result of project
operations, which may benefit
downstream salmonids. American
Rivers et al. requests more information
about potential water quality effects,
including potential effects on TDG
during times of higher water
temperatures.
Our Analysis
Water diverted for power production
would be discharged into the plunge
pool below the falls and would reduce
spillage and plunging flows over the
falls, in turn decreasing TDG levels.
Some flows would continue over the
falls when inflow to the reservoir
exceeds 1,600 cfs and excess flow is
spilled over the dam. During these
conditions, powerhouse operation
would continue and would act to reduce
TDG concentrations downstream of the
falls. The beneficial reduction in TDG
would be directly related to the
proportion of river flow that is diverted
through the powerhouse. For normal
water years, substantial reductions in
TDG would be expected during all but
a few days around the annual peak flow.
The recently proposed minimum flow
releases of 10 or 30 cfs from the dam
would maintain a small flow release
over the falls during periods when most
of the river flow is diverted for power
generation. This volume of flow,
however, would be much lower than
flows that now occur over the falls (see
table 2), so there still would be
reductions in TDG compared to existing
conditions.
Normal turbine operation would not
increase TDG except when air is
introduced in the turbine draft tube to
protect DO concentrations downstream
during the summer months (see below).
However, this would typically occur
after high flows have receded and high
TDG is no longer a concern.
Any changes in TDG levels would
have the potential to affect resident
juvenile UCR steelhead and other
species in the plunge pool and in the
lower Similkameen River year-round.
Okanogan PUD proposes to monitor
PO 00000
Frm 00030
Fmt 4701
Sfmt 4703
TDG at the powerhouse intake and in
the plunge pool below the falls for a
period of 5 years. These data would be
used to monitor the effects of the project
on TDG levels and to determine if
alternative measures are needed. This
measure would provide a water quality
benefit; however, it would be
appropriate for the Okanogan PUD to
file if a report with the Commission at
the end of five years evaluating the need
for continued monitoring and/or
measures would ensure that the water
quality is maintained at a level that will
support aquatic resources at the project.
It would also be appropriate for
Okanogan PUD to select the sites for
TDG monitoring in consultation with
the TRG.
Sediment Management (WQ–05 and
WQ–08)
A 2007 licensing study that included
sediment elutriate analyses indicated
that water quality standards for copper
could be exceeded if sediment is
disturbed during proposed project
construction and operation (Okanogan
PUD, 2008a). The shallowest part of the
reservoir is adjacent to the proposed
intake location, and there is concern
that sediment in this location could be
mobilized during excavation of the
intake channel and by project
operations. Okanogan PUD proposes to
excavate as much of the intake channel
as possible in the dry, because
underwater excavation poses the
greatest risk of mobilizing sediment. To
contain any resuspended sediments that
may occur, Okanogan PUD proposes to
install a floating silt barrier to contain
sediments around construction areas.
As we’ve said in section 3.3.1,
Geology and Soils Resources, Okanogan
PUD also proposes other measures to
mitigate any effects of erosion and
sediment mobilization during
construction. Excavated material would
be placed in a lined stockpile and tested
for arsenic, copper, cadmium, zinc, and
lead. Okanogan PUD would develop a
sampling and analysis plan based on the
chemical characteristics of
representative samples from established
stockpiles, and the results would be
compared with relevant state criteria to
determine if materials could be
disposed of onsite, in a licensed solid
waste landfill, or in a landfill licensed
for the disposal of state-designated
dangerous waste.
Okanogan PUD also proposes a
Vegetation Plan that would include
hydroseeding of the disposal sites, in
addition to the seeding and other
methods that would be used to
revegetate all areas of exposed soil as
per the site revegetation requirements.
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
Washington DOE recommends that
the sediment excavated from the intake
channel entrance be tested for arsenic,
copper, cadmium, zinc, and lead, and
the results compared to the MTCA
Method A water quality criteria of the
EPA’s Maximum Contaminant Level.
Washington DOE also recommends
storing excavated material onsite until it
is characterized, then dispose of it in an
appropriate manner based on analysis
results and including a sampling and
analysis plan.
In response to the agency comments
and recommendations, Okanogan PUD
proposes to develop a Spill Response
Plan and a Storm Water Pollution
Prevention Plan to be filed with the
Commission within one year of license
issuance. The Spill Response Plan
would be implemented at the beginning
of project construction.
Our Analysis
Project construction has the potential
to resuspend sediments during
excavation of the intake channel and
installation of other project facilities.
This construction and any reservoir
erosion due to fluctuating water levels
could cause short-term turbidity
plumes, release of contaminated
sediments, and downstream
sedimentation.
To avoid resuspension of sediments to
the extent possible, Okanogan PUD
would conduct as much of the
excavation in the dry as possible. To
avoid mobilizing resuspended
sediments downstream of the reservoir
during any instream excavations,
Okanogan PUD would place a floating
silt barrier to contain suspended
sediments. We expect Okanogan PUD’s
other proposed measures, including the
Spill Response Plan, the Storm Water
Pollution Prevention Plan, testing
excavated materials for arsenic, copper,
and cadmium contamination, and
employing BMPs, would reduce the risk
for short-term degradation of water
quality and aquatic habitat during
construction, including critical habitat
for UCR steelhead and EFH for Chinook
salmon.
To estimate the likelihood of
sediment transport occurring during
project operations, Okanogan PUD
constructed a two-dimensional
hydraulic model of the reservoir using
the program River 2D.15 Models were
developed for combinations of flow and
forebay geometry, including: 2,200 cfs
under existing and proposed conditions;
10,200 cfs under existing conditions;
15 The River 2D model, methods, and results are
detailed in Okanogan PUD (2008a), appendix e.2.3,
section 4.2.6.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
and 16,100 cfs under existing and
proposed conditions. The modeled
range of flows spans the range of flow
magnitudes over which the 1–D
impoundment hydraulic model
predicted a transition from potential
deposition to potential erosion. The
model incorporates two assumptions:
(1) Horizontal flow direction would not
change with changes in bed topography,
and (2) threshold velocities do not
change with depth.
The volume and weight of potential
erosion/deposition were estimated for
each flow condition, assuming a
characteristic grain size of
approximately 0.6 mm, an erosion/
transport threshold of 1 foot per second
and a deposition threshold of 0.1 foot
per second, and a constant bulk density
of sand equal to 100 pounds per cubic
foot. The results of the River 2D model
are consistent with the expectation that
the addition of the intake channel
would change flow velocities within the
reservoir near the intake. The intake
channel causes the flow to veer
southeast toward the intake at both
2,200 and 16,100 cfs.16 The model also
indicates that increased velocities
would be likely just upstream of the
pinch point that defines the upstream
end of the forebay (the lower end of the
reservoir immediately adjacent to the
intake channel). The model predicts
very high velocities in the intake
channel at both modeled flow volumes,
indicating that sediment transport and
potential erosion would likely occur
under the proposed operations.
The results of this model-based
analysis suggest that the Enloe reservoir
currently undergoes an annual cycle of
erosion and deposition, and that the
additional erosion and sediment
deposition that would occur at
relatively low flows due to project
operations would be minimal, compared
to the amount of erosion and deposition
that occurs every year during peak
flows. At higher flows, the additional
erosion and deposition under proposed
operations would also be minor.
Okanogan PUD acknowledges
uncertainties associated with this
analysis ; however, the general pattern
shown by the model is probably
reasonable. Sediment builds up in the
forebay during relatively low flow
portions of the year and is largely
flushed out during annual peak flows.
This general pattern would likely
continue during proposed project
operations, with increased levels of
erosion and decreased levels of
deposition occurring in the lower end of
16 The median annual flood discharge that would
occur on average once every 2 years is 16,100 cfs.
PO 00000
Frm 00031
Fmt 4701
Sfmt 4703
28535
the reservoir near the dam and intake
channel. The predicted small increases
in reservoir erosion and decreases in
deposition during proposed project
operations indicate that some sediment
deposition (sand and silt) would
increase in the lower gradient reach of
the lower Similkameen River (RM 0–
4.7) (Okanogan PUD, 2008a). Increased
deposition of fine sediment would
modify aquatic habitat if measurable
deposition was to occur, and could
result in downstream contamination if
the reservoir sediment transported
downstream of the falls is contaminated.
That potential, however, seems
unlikely, because the River 2D model
did not predict a significant increase in
erosion, which would be required to
mobilize contaminated sediment that
has been deposited in the reservoir for
many years. The mound of sediment
observed in the lower end of the
reservoir during low-flow bathymetric
surveys is likely a transient feature that
does not contain legacy sediments from
early in the impoundment’s history, and
thus would not contain high
contaminants levels (Okanogan PUD,
2008a).
Increased deposition of fine sediment
in the lower Similkameen River could
have a negative effect on the spawning
and rearing areas used by anadromous
salmonids and affect water quality for
other downstream beneficial uses. The
potential effects on listed species are
discussed in section 3.3.5, Threatened
and Endangered Species.
Spill Plan (WQ–07)
Okanogan PUD proposes to develop
and implement a Spill Plan including
spill prevention, containment, and
clean-up plan at project initiation to
reduce potential effects of accidental
spill.
BLM recommends Okanogan PUD
develop and implement, after
consultation with the BLM, a hazardous
substances plan (essentially same as
Spill Plan) for oil and hazardous
substance storage, spill prevention, and
clean up prior to any activity that may
affect the BLM-administered public
lands. BLM recommends the plan
address both construction and ongoing
operations and maintenance of the
proposed Enloe Project. At a minimum,
the plan would: (1) Outline Okanogan
PUD’s procedures for reporting and
responding to releases of hazardous
substances, including names and phone
numbers of all emergency response
personnel and their assigned
responsibilities; (2) outline Okanogan
PUD’s procedures for timely
identification and remediation of spills,
including procedures in the event that
E:\FR\FM\17MYN2.SGM
17MYN2
28536
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
personnel are not present on-site 24hours a day; (3) identify and maintain
a cache of spill cleanup equipment
sufficient to contain any spill from the
proposed Enloe Project; (4) call for
Okanogan PUD to provide BLM with a
report specifying the location of spill
clean-up equipment on the BLMadministered public lands and the
location, type, and quantity of oil and
hazardous substances stored in the
proposed Enloe Project area; and (5)
require that Okanogan PUD inform BLM
immediately as to the nature, time, date,
location, and action taken for any spill
affecting the BLM-administered public
lands.
Our Analysis
In accordance with 40 CFR 112.1 of
the EPA’s regulations, a spill prevention
control and countermeasure plan is
required to be in place for any facility
where unburied storage capacity
exceeds 1,320 gallons of oil or a single
container has a capacity in excess of 660
gallons. In addition to the on-site
storage of lubricants and other oil
products, transformers are likely oilcooled and would be of sufficient
capacity to exceed the 1,320 gallon
threshold that would require a plan. The
Spill Plan proposed by Okanogan PUD
and further described by BLM would
provide a quick reference to procedures
and notifications in case of oil spills to
reduce the possibility of oil or other
hazardous substances reaching the
BLM-administered land and the
Similkameen River if a spill occurs.
Development and implementation of the
Spill Plan after consultation with BLM
and Washington DOE would minimize
the potential for petroleum products to
enter the project waters in the event of
a spill.
sroberts on DSK69SOYB1PROD with NOTICES
Minimum Flow Proposal
As we previously described in
sections 1.3.2 and 2.2.4, by letter filed
October 28, 2010, Okanogan PUD
proposes minimum flows for the
bypassed reach immediately
downstream of Enloe dam. Okanogan
PUD also proposes: A monitoring
program for DO and water temperature
for the bypassed reach for a period of
time postconstruction; an adaptive
management program to enhance DO
and water temperatures should
monitoring indicate that water quality
standards are not being met;
determining critical flow thresholds for
downramping rates based on monitoring
and field observations prior to
operations; and determining a means for
releasing minimum flows at Enloe dam.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
Our Analysis
Okanogan PUD’s proposal would
provide a minimum flow of 30 cfs from
mid-July to mid-September, and 10 cfs
the rest of the year into the bypassed
reach.
Providing a minimum flow of 10 and
30 cfs would ensure that some flow is
passing over Enloe dam and falls at all
times, even during the lowest flow
months of the year when the project
hydraulic capacity would allow
diversion of the entire river flow for
power generation. Effects on water
quality would be related to potential
changes in DO levels and water
temperature. As we previously
discussed, DO levels in the
Similkameen River do not always meet
the state standard of a minimum of 8
mg/L under existing conditions,
although the falls act to aerate flows
passing over them. Diversion of most of
the river flow through the powerhouse
during lower flow periods would reduce
the aeration effect that now occurs over
the falls. A study conducted by
Okanogan PUD found that under current
conditions, DO levels of water plunging
over the falls increase by approximately
1.0 mg/L.17 Maintaining some flow in
the bypassed reach and over the falls
would continue to provide some natural
aeration in this project reach, although
flows of 10 and 30 cfs are relatively low
and may not contribute substantially to
aeration below the project tailrace.
Okanogan PUD’s proposal to aerate the
water in the project draft tubes would be
able to increase DO levels by 1.0 mg/L
or more and would be able to offset the
loss of this natural increase in DO.
Water temperatures in the
Similkameen River upstream and
downstream of the project area are
marginal for salmonid habitat under
existing conditions, and often exceed
state standards for salmonid spawning,
incubation, and rearing. Effects of the
proposed minimum flow on water
temperature could occur by passage of
a relatively low flow (10 and 30 cfs) in
the bypassed reach, exposing it to solar
radiation and warming during the
summer months, further reducing the
suitability of salmonid habitat in the
river. On November 10, 2010, Okanogan
PUD filed an analysis of the effects of
the proposed minimum flow on water
temperature, which concluded that the
passage of that flow through the
bypassed reach would not result in a
measurable increase in water
temperature at the base of the falls, even
under the lowest river flow
17 See Okanogan PUD letter filed on November
10, 2010.
PO 00000
Frm 00032
Fmt 4701
Sfmt 4703
conditions.18 Okanogan PUD, however,
also concluded that a temperature
increase of 0.5 to 1.0 °C could occur in
the bypassed reach if the proposed
minimum flow was allowed to pass over
the entire face of Enloe dam in a thin
sheet flow.19 Passing the minimum flow
through a pipe or a smaller gate to the
base of the dam instead of providing it
as a sheet flow over the dam could
prevent this temperature increase. We
find Okanogan PUD’s analysis
reasonable and we agree that passing
this minimum flow would likely have a
minor effect on water temperature
downstream of the falls, assuming that
the minimum flow is provided via a
pipe or small gate at the dam.
Okanogan PUD’s proposal for DO and
temperature monitoring for a period of
time postconstruction would allow for a
characterization of the water quality in
the bypassed reach under the proposed
minimum flows of either 10 or 30 cfs.
Consultation with the TRG to determine
the length of DO and temperature
monitoring in the bypassed reach, and
adaptive management could help to
develop means to protect water quality
in this reach.
Similarly, Okanogan PUD had
previously proposed to implement the
ramping rates recommended by the
resource agencies downstream of the
tailrace. Additionally, they have
proposed to identify critical flow
thresholds for downramping rates in the
bypassed reach to protect aquatic
resources in the bypassed reach during
project start-up and shutdown. The
topography of the bypassed reach is
such that there are areas where fish
would likely be stranded if spillage over
the dam is reduced at a rate that does
not allow fish to successfully vacate
these areas. The best way to determine
these critical flow thresholds would be
by field observations as proposed.
Okanogan PUD provided preliminary
designs for alternative minimum flow
release structures and stated that the
preferred option would be a gate and
release pipe using one of the two
existing penstock intakes from the
abandoned hydro station at the dam.
This would minimize the potential for
water temperature increases in the
minimum flow releases. Okanogan PUD
stated, however, that it and the resource
agencies have not yet come to agreement
on the final design of the flow release
structure, and it proposes further
consultations with the agencies to
finalize the design. We agree that a flow
18 See Okanogan PUD letter filed on November
10, 2010.
19 State water quality standards are that a water
temperature increase should not exceed 0.3 °C.
E:\FR\FM\17MYN2.SGM
17MYN2
28537
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
release structure consisting of a gate and
pipe using one of the former penstock
intakes would be the best option,
because it would minimize any
potential water temperature increases,
would allow placement of the flow
discharge at a point below the dam that
would provide the greatest
environmental benefit, and would
provide the best control of the flows to
be released. We also agree that the final
design of this structure should be
developed in consultation with the
resource agencies (Washington DOE,
Washington DFW, FWS, NMFS, BLM,
and the Colville), prior to filing the
design with the Commission for
approval.
3.3.2.3 Cumulative Effects
Historical land use in the
Similkameen River drainage includes a
legacy of mining, timber harvest,
grazing, and agriculture. Commercial
mining has probably had the greatest
impact on the Similkameen River water
quality. One of the largest mines in the
area was the Kaaba-Texas Mine, located
several miles upstream of Enloe
reservoir near the community of
Nighthawk. The mine operated from the
late 1890s until 1954 and discharged
tailings directly into the Similkameen
River until 1946. In 1999, the EPA
removed and disposed of approximately
81,000 cubic yards of contaminated
mine tailings from the mine site.
Today the dominant land use is
agriculture, grazing, and recreation. A
number of orchards, vineyards and a
public golf course are located along the
Loomis-Oroville Road. The area is
unfenced open range generally leased
for grazing.
The water quality of the Similkameen
River has improved since the
commercial mining has been
discontinued in the drainage area above
the project, and with the EPA efforts to
remove contaminated mine tailings at
the Kaaba-Texas Mine. However, much
of the sediment contained in Enloe
reservoir was deposited when upstream
mining activities were active, and
contains some arsenic, copper, and
cadmium.
The construction and operation of the
project could result in a number of
effects that when added to conditions
already present in the basin, could have
negative environmental effects. Project
construction of the intake channel has
the potential to remobilize
contaminated sediments. Petroleum
products stored and used during
construction and during project
operations could be released to project
waters. The increase in reservoir surface
area increases the potential for slightly
higher water temperatures in the
reservoir. Erosion from project
construction could cause increased
turbidity and sedimentation. Measures
proposed by Okanogan PUD and
additional staff recommended measures,
however, would minimize the effects on
water quality and the potential for
cumulative effects during the
construction and operation of the
proposed project.
3.3.3
Aquatic Resources
3.3.3.1 Affected Environment
The fisheries resources information
presented in this section is a
combination of recent and historical
reports produced by state and federal
resource agencies; investigations by
universities and consulting groups;
literature reviews; file materials from
state and federal agencies; and ongoing
studies. These materials were
supplemented by information from
Okanogan PUD studies that were
conducted in consultation with NMFS,
FWS, Washington DFW, Washington
DOE, and the Colville from 2005
through 2008.
The Similkameen River is
approximately 72 miles long and
originates in the Cascade Mountains of
British Columbia, Canada. The 27-mile
reach of the Similkameen River between
the U.S./Canadian border and the
Okanogan River flows through semi-arid
mountainous terrain. The licensing
study area extends from the confluence
of the Similkameen and Okanogan
Rivers upstream to Shanker’s Bend at
RM 10.1. Enloe dam is located
immediately upstream of the
Similkameen Falls,20 about 8.8 miles
upstream from the confluence with the
Okanogan River. Enloe dam is
approximately 18 miles downstream of
the U.S./Canadian border.
Downstream of the Dam
The river below the falls is divided
into three reaches based on habitat
conditions and channel morphology.
Reach 1 (RM 0–4.7) is a low gradient
(<0.1 percent), braided channel. The
dominant substrates are cobble and
gravel with areas of sand and boulders.
The majority of salmonid spawning
occurs in this reach, although gravel is
relatively scarce—limiting the amount
of spawning habitat. Reach 2 (RM 4.7–
7.1) has a wider active channel than
reach 1 and a few side channels. The
gradient is low to moderate (0.1 to 2
percent; average 0.4 percent). The
substrates are cobble, sand, and
boulders. Reach 3 (RM 7.1–8.8) is a
canyon reach. The channel gradient in
reach 3 averages greater than 2 percent.
Although the dominant substrate is
bedrock, sand deposits occur in the
center of the channel.
The Similkameen River supports
anadromous and resident fishes below
the falls. Native species in the lower
river include summer-run Chinook
salmon, sockeye salmon, UCR steelhead,
bridgelip sucker, largescale sucker,
mountain whitefish, longnose dace,
northern pikeminnow, redside shiner,
rainbow trout, and unidentified sculpin
species (table 9). Non-native species
include common carp, largemouth and
smallmouth bass, and black crappie.
The relative abundance (percent
composition) of these species is shown
in table 10.
TABLE 9—NATIVE AND NON-NATIVE FISHES IN THE SIMILKAMEEN RIVER BASED ON SNORKEL SURVEYS
(Source: Okanogan PUD, 2008a)
sroberts on DSK69SOYB1PROD with NOTICES
Common name
IEC beak
(1984)
Okanogan PUD
(1991)
ENTRIX
(2006)
Chinook salmon ..................................................
UCR Steelhead/rainbow trout .............................
Sockeye salmon/kokanee ...................................
Bridgelip sucker ..................................................
................................
D & U in Canada ...
U kokanee .............
D ............................
......................................
D ..................................
......................................
U ..................................
D ...............................
D ...............................
...................................
U ...............................
Largescale sucker ...............................................
................................
D & U ...........................
D & U ........................
Sculpin spp. ........................................................
D ............................
D & U ...........................
D & U ........................
20 Also
known as Coyote Falls.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00033
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
ENTRIX
(2007)
(upstream only)
U (unidentified species)
U (unidentified species)
U
28538
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
TABLE 9—NATIVE AND NON-NATIVE FISHES IN THE SIMILKAMEEN RIVER BASED ON SNORKEL SURVEYS—Continued
(Source: Okanogan PUD, 2008a)
ENTRIX
(2007)
(upstream only)
Common name
IEC beak
(1984)
Okanogan PUD
(1991)
ENTRIX
(2006)
Northern pikeminnow ..........................................
Longnose dace ...................................................
Redside shiner ....................................................
Burbot .................................................................
Mountain whitefish ..............................................
Chiselmouth ........................................................
Peamouth ............................................................
Smallmouth bass ................................................
Largemouth bass ................................................
Black crappie ......................................................
Common carp .....................................................
Yellow perch .......................................................
D ............................
D & U .....................
................................
................................
D ............................
................................
................................
................................
................................
D ............................
................................
................................
U ..................................
......................................
U ..................................
U ..................................
D & U ...........................
......................................
......................................
......................................
D & U ...........................
D ..................................
......................................
......................................
D ...............................
...................................
D & U ........................
...................................
D ...............................
...................................
...................................
U ...............................
D & U ........................
...................................
...................................
...................................
U
U
U
U
U
U
U
U
U
Note: D = downstream of Enloe dam; U = upstream of Enloe dam.
TABLE 10—NUMBERS AND PERCENT COMPOSITION OF NATIVE AND NON-NATIVE FISHES IN THE RIVER DOWNSTREAM OF
ENLOE DAM BASED ON SNORKEL SURVEYS
(Source: Okanogan PUD, 2008a)
Reach 1
RM 0–4.7
Common name
Aug
Sucker spp. ..................
Largemouth bass .........
Smallmouth bass .........
Sculpin spp. .................
Common carp ..............
Minnow spp. .................
Northern pikeminnow ...
Juvenile UCR
steelhead/rainbow
trout ..........................
Adult UCR steelhead/
rainbow trout a ..........
Sockeye salmon ...........
Chinook salmon ...........
Mountain whitefish .......
Totals ....................
Reach 2
RM 4.7–7.1
Sep
Aug
Reach 3
RM 7.1–8.8
Sep
Aug
% of
Total catch
Sep
29
42
101
3
0
472
15
314
25
92
6
13
737
0
53
12
32
1
0
5
21
176
7
8
3
0
0
21
0
0
13
0
0
0
0
1
0
20
0
0
0
1
22.0
3.3
10.2
0.5
0.5
46.6
2.2
115
77
16
8
3
1
8.4
0
0
0
41
818
3
13
33
47
1,360
0
2
0
1
143
0
0
0
24
247
0
0
0
0
16
0
0
0
0
23
0.1
0.6
1.3
4.3
100
sroberts on DSK69SOYB1PROD with NOTICES
a The numbers of adult anadromous fish observed during the 2006 snorkel surveys were not considered representative of population strength
because adult anadromous fish are most abundant in the river during their respective spawning migrations, and the survey occurred outside of
the spawning migration period.
The summer-run Chinook salmon in
the Similkameen River enter the river
from July through late September. In its
February 26, 2010 letter, NMFS stated
that adults are known to hold in the
plunge pool below the falls until
spawning takes place in October
through early November, peaking in
mid-October from RM 0 to RM 8.8.
There are no known spawning areas
within the project area. Most of the
Chinook salmon spawning occurs in the
lower 5 miles of the river. Washington
DFW counted 1,660 Chinook salmon
redds in 2004 and 1,423 in 2005 in the
lower Similkameen River. Based on
these redd counts, Washington DFW
estimated Chinook spawning
escapement 21 to be approximately 4,169
fish in 2004 and 3,770 in 2005. Chinook
fry emergence occurs in January through
April; juveniles emigrate to the ocean
within 1–4 months after emergence,
when water temperatures begin to
increase.
Washington DFW operates a Chinook
salmon rearing and acclimation facility
called Similkameen Pond at RM 3.
Juveniles are released from the pond in
mid-April to mid-May.
Sockeye salmon enter the Columbia
River from late May to mid-June, and
migrate into the Okanogan River.
Sockeye salmon spawn primarily in the
main stem of the Okanogan River
upstream of Lake Osoyoos in Canada,
typically in October. Fry emerge in
21 Anadromous
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00034
adults returning to spawn.
Fmt 4701
Sfmt 4703
March through May and move
downstream to Lake Osoyoos. The
juveniles rear in the lake for 1–2 years
before emigrating to the ocean, usually
in May. Although some sockeye have
been reported in the lower Similkameen
River, there is no sockeye spawning
habitat in the river.
Chinook salmon and sockeye salmon
pre-spawn mortalities in the
Similkameen and Okanogan Rivers have
been associated with high water
temperatures. Dead female Chinook
salmon were examined to estimate prespawn mortality in the Similkameen
River from 2004–2006. Examinations in
2004 and 2005 indicated approximately
1 percent of females died prior to
spawning. This percentage could vary
E:\FR\FM\17MYN2.SGM
17MYN2
sroberts on DSK69SOYB1PROD with NOTICES
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
depending on the annual flow and
temperature conditions.
High water temperatures can also
delay upstream migration of the
anadromous salmonids into the
Okanogan River and can lead to the prespawn mortality noted above, or affect
the timing of spawning. UCR steelhead,
Chinook salmon, and sockeye salmon
enter the cooler Similkameen River and
migrate as far upstream as the falls
during the summer months. The larger,
deeper pools (e.g., the plunge pool
below the falls) and areas with overhead
structure (e.g., large woody debris,
bridges) are the preferred holding
habitat until temperatures in the
Okanogan River decrease and these
species can commence their spawning
activities. These spawning delays can
adversely affect reproductive success by
extending incubation and fry emergence
into time periods with less suitable
conditions for survival, or by shortening
the rearing period for juvenile fish prior
to their emigration to the ocean.
During snorkel surveys, Okanogan
PUD observed juvenile steelhead/
rainbow trout in the side channels of
reach 1 and 2, where water temperatures
were several degrees cooler than the
surrounding water. In dry years, flow in
the side channels is intermittent,
resulting in dewatered segments. Small
amounts of large woody debris also
occur in these reaches, and sections of
the river have been channelized and
diked, particularly near Oroville.
In its February 26, 2010, letter,
Interior stated that historically
significant runs of anadromous Pacific
lamprey may have occurred in the
project area, and the lamprey has had
economic and cultural significance to
local Native American tribes. Lamprey
larvae are filter feeders that burrow into
fine silty substrate in the lower velocity
areas of streams (Wydoski and Whitney,
1979). Pacific lamprey remain in the
larval stage for 5 to 6 years before they
metamorphose and migrate to the ocean
as predatory adults. The adult stage is
generally short (less than 1 to 2 years)
(Moyle, 2002).
Probable suitable Pacific lamprey
spawning and rearing habitats are
present in the Similkameen River below
the dam; however, recent attempts to
document adult lamprey have been
unsuccessful. Washington DFW has
documented unidentified larval lamprey
in the hatchery ponds on reach 1, close
to the confluence with the Okanogan
River. In 2006, the Colville collected
adult and juvenile lamprey from screw
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
28539
traps in the Okanogan River,
downstream of Salmon Creek.
Unconfirmed lamprey redds were
observed in the middle reach of the
Okanogan River in 2008.
within the plunge pool or elsewhere in
the bypassed reach. Aquatic benthic
macroinvertebrates would also be
subject to high shear stress and scour
during high flows.
Proposed Bypassed Reach
Upstream of the Dam
The 33-foot-long, 20-foot-high
Similkameen Falls below Enloe dam is
a natural barrier to upstream salmonid
fish passage. The falls presents less of
an impediment to Pacific lamprey since
they use their oral disks to attach to
surfaces allowing them to withstand
higher current velocities. Fish habitat in
the 370-foot-long, bedrock-boulder
dominated bypassed reach between the
dam and the falls is limited and it was
believed that there are few, if any fish
in this reach. A snorkel survey of the
bypassed reach between Enloe dam and
the head of Similkameen Falls was
conducted in August 2006. No fish were
observed. The dominant substrate is
bedrock strewn with large boulders;
smaller substrate occurred in sparse
patches. There is no overhanging
vegetation or large woody debris.
On September 15, 2010, another
snorkel survey and hook and line
sampling was conducted by Washington
DOE and DFW biologists in the plunge
pool downstream of Enloe dam, with
participation by Okanogan PUD
representatives and a biologist from the
Colville (report included in filing from
Donald H. Clarke, Counsel to Public
Utility District No. 1 of Okanogan
County, to Kimberly Bose, Secretary,
FERC, November 10, 2010). Flow
conditions did not allow a complete
survey of the plunge pool, and only the
east side of the pool was safely
accessible to swimmers. Biologists
observed small numbers of juvenile
suckers, smallmouth bass, rainbow
trout, and one sculpin, and two rainbow
trout and a northern pikeminnow were
captured by hook and line. No
anadromous species were observed.
Fish were observed actively feeding,
indicating that the plunge pool is used
as feeding habitat by resident fish
species when flow conditions allow.
Fish observed in the pool likely gained
access to the pool by dropping
downstream from upstream of Enloe
dam.
Flow in the bypassed reach becomes
extremely turbulent during high water.
Fish in the bypassed reach and plunge
pool would encounter extreme flow
conditions during high flow, and may
be flushed downstream of the falls
unless they can access flow refugia
Habitat in Enloe reservoir consists
mostly of sand and silt substrate with
some gravel. Cobble occurs at a few sites
near the upstream end. From the middle
of the reservoir to the upstream end the
banks are also relatively steep. There is
more shallow water habitat in this
section of the reservoir, although the
majority of habitat is still deep and open
water. Overhanging vegetation that
provides shade and cover is limited
along the reservoir, and includes a few
large willows. Small amounts of aquatic
vegetation and a few patches of
submerged grasses occur in the
reservoir. Large woody debris is scarce;
the most common habitat structure and
cover were steep rock walls, submerged
boulders, and partially submerged
boulders along the shoreline.
There are fewer fish species in Enloe
reservoir than in the river below the
dam (tables 9 and 11). Native resident
fishes in the reservoir include
chiselmouth, peamouth, bridgelip
sucker, largescale sucker, mountain
whitefish, longnose dace, burbot,
northern pikeminnow, redside shiner,
and unidentified sculpin species. Nonnative species include largemouth bass,
smallmouth bass, yellow perch, and
common carp. Native rainbow trout are
found upstream of the project boundary
in Canada but were not found in the
project reservoir but were found in the
bypassed reach.
Most of the species in Enloe reservoir
are introduced, non-native fish that are
better adapted to warmer, slower
velocity habitat (table 11). Most fish
captured in the reservoir were small and
were found in shallow areas associated
with the limited presence of cover
(mostly vegetation). The larger fish,
mostly northern pikeminnow,
chiselmouth, and unidentified suckers,
use open water areas of the reservoir. No
rainbow trout and very few mountain
whitefish were found in the reservoir,
likely due to a combination of northern
pikeminnow predation, warm water
temperatures, and lack of cover.
Introduced warmwater species, such as
largemouth bass, yellow perch, and
common carp, may be spawning in the
reservoir littoral zones, but more likely
are transported to the reservoir from
upstream sources such as Palmer Lake.
PO 00000
Frm 00035
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
28540
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
TABLE 11—NUMBERS AND PERCENT COMPOSITION OF NATIVE AND NON-NATIVE FISHES IN THE RESERVOIR UPSTREAM OF
ENLOE DAM
[Source: Okanogan PUD, 2008a]
2006
2007
Beach seine
Minnow trap
July 7
Aug.
11
Sept.
14
July 7
Aug.
11
Suckers spp ..................................................
Sculpin spp ...................................................
Largemouth bass ..........................................
Chiselmouth ..................................................
Common carp ...............................................
Minnow spp ...................................................
Peamouth ......................................................
Northern pikeminnow ....................................
Redside shiner ..............................................
Longnose dace .............................................
Yellow perch .................................................
Mountain whitefish ........................................
22
2
53
0
14
68
0
0
2
0
13
0
1
0
16
0
0
28
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
4
0
0
1
0
0
0
Totals .....................................................
174
46
1
5
Common name
Similkameen River aquatic benthic
macroinvertebrate data were collected
by Vinson (1994) from three riverine
sites between the Canadian border and
the project area at RMs 12, 16, and 17.
Beach seine
Minnow trap
Gill net
Sept.
14
% of
total
catch
March
22
1
0
0
0
0
4
0
0
0
0
0
0
0
1
0
0
0
3
0
0
0
0
0
0
10.2
1.3
29.4
0
6.0
46.0
0
0
1.3
0
6.0
0
0
0
0
0
0
0
0
0
1
3
0
0
2
0
16
0
0
1
0
0
0
3
1
2
1
1
0
0
0
0
0
0
11
0
0
0
0
0
0
0
0
1
0
3
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
0
0
8
0
0
2
16
0
0
0
0
6.7
1.3
21.3
10.7
0
2.7
2.7
25.3
17.3
8.0
1.3
2.7
5
4
100
4
25
13
5
0
28
100
Eighty-five taxa were collected; 10 taxa
made up 80 percent of the total sample
(table 12). The majority of
macroinvertebrates collected were
chironomid larvae (50.3 percent relative
July
24
March
22
July
24
March
22
July
24
% of
total
catch
abundance). Ephemeroptera from the
family Ephemerellidae accounted for 19
percent of the relative abundance;
Trichopterans represented 9 percent.
TABLE 12—AQUATIC BENTHIC MACROINVERTEBRATE TAXA FOUND IN THE SIMILKAMEEN RIVER ABOVE ENLOE RESERVOIR
[Source: Okanogan PUD, 2008a]
Portion of
sample
(%)
Family
Sub-Family
Genus
Diptera .............................
Diptera .............................
Ephemeroptera ................
Diptera .............................
Trichoptera ......................
Ephemeroptera ................
Ephemeroptera ................
Diptera .............................
Trichoptera ......................
Oligochaeta .....................
sroberts on DSK69SOYB1PROD with NOTICES
Order
Chironomidae ..................
Chironomidae ..................
Ephemerellidae ...............
Chironomidae ..................
Hydropsychidae ..............
Baetidae ..........................
Ephemerellidae ...............
Chironomidae ..................
Brachycentridae ..............
Tubificidae .......................
Orthocladiinae .................
Chironominae ..................
.........................................
Tanypodinae ...................
.........................................
.........................................
.........................................
.........................................
.........................................
Naidinae ..........................
.........................................
.........................................
Ephemerella ....................
.........................................
Hydropsyche ...................
Baetis ..............................
.........................................
.........................................
Brachycentrus .................
.........................................
There are no benthic
macroinvertebrate data for Enloe
reservoir or the river below Enloe dam.
It is likely that the reservoir benthic
macroinvertebrate community is less
diverse than the riverine community. A
significant increase in non-insect taxa
that are tolerant of silt conditions, such
as oligochaete worms and isopods,
would be expected in the reservoir. The
macroinvertebrate communities in
reaches 2 and 3 below Enloe dam are
likely similar to communities found in
the upper Similkameen River. Reach 1
is a lower velocity, braided channel
with more fine sediment deposition; as
such, it is likely to have a higher
percentage of taxa that burrow, swim, or
sprawl, with a corresponding reduction
in the percentage of macroinvertebrates
that cling and/or crawl.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
3.3.3.2
Environmental Effects
Effects of Project Construction (WQ–05
Through WQ–08, FISH–01, BOTA–03
and BOTA–04, BOTA–07 Through
BOTA–13)
As proposed by Okanogan PUD,
construction of the project access road,
intake channel, penstock, and
powerhouse would require excavation
and placement of spoil using heavy
equipment, blasting, and would be
supported by staging and laydown areas
and fuel and lubricant storage facilities.
Okanogan PUD proposes a Blasting
Plan that includes environmental
measures to minimize potential negative
effects on anadromous and resident fish
that are in the large pool at the base of
the falls. The Blasting Plan incorporates
the following mitigation measures to
PO 00000
Frm 00036
Fmt 4701
Sfmt 4703
21.0
19.2
11.0
8.0
7.1
5.4
2.6
2.1
1.9
1.8
Cumulative
%
21.0
40.2
51.2
59.2
66.3
71.7
74.3
76.4
78.3
80.1
avoid adverse effects on anadromous
and resident fish:
• Small charges would be set off with
time delays to minimize peak vibration
and avoid creating excessive pressure
waves and noise. Threshold criteria for
pressure waves and noise have been
adopted in the Blasting Plan to avoid
potentially harmful levels of pressure
and noise.
• Impacts would be minimized by
timing near- and in-water blasting to
coincide with the lowest water levels
(low flows) combined with lowest
potential for fish occupation in the area.
• Blast scheduling would avoid
periods when federally listed or
sensitive fish species are present.
• Blasting adjacent to the river would
take place prior to spring high flow or
during fall low flow.
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
• The amount of time that near- or inwater construction and blasting occurs
would be minimized when the
downstream end of the tailrace channel
is excavated. During this period,
construction activities would be
expedited to reduce the amount of time
fish may be exposed to the effects of
blasting activities.
• Impacts would be minimized or
avoided by removing as many fish as
practical from the area adjacent to the
proposed blasting and installing an
exclusion barrier downstream of the
potentially affected area to prevent entry
of additional fish into the affected area.
• Mechanical excavators with
hydraulic rock hammer attachments
would be used in lieu of blasting to trim
the excavation, excavate rock in areas
unsuitable for blasting, and to excavate
loose rock. Okanogan PUD would
remove residues from the blasting
operation to the extent practical.
• Hydrophones would be used to
monitor pressure waves from blasting
that could affect fish.
• Creation of hydrostatic pressure
waves greater than 100 kilopascals (or
about 14.5 pounds per square inch), or
noise levels exceeding 190 decibels (dB)
would be avoided, as practical.
In response to a comment by
Washington DFW, Okanogan proposes
to station biological monitors in the
field during blasting to observe
mortalities or changes in fish behavior
that might make them more susceptible
to predation.
Our Analysis
sroberts on DSK69SOYB1PROD with NOTICES
Blasting
The large, deep plunge pool
downstream of the falls is an important
habitat feature for anadromous and
resident fishes that is not found
elsewhere in the Similkameen River.
Blasting would expose fish in the
plunge pool to short-term physiological
stress, sublethal injuries, mortality, or
predation. Okanogan PUD’s proposed
Blasting Plan, as described above,
however, would minimize these impacts
and be protective of the fishery.
Additionally, Okanogan PUD
proposes to capture anadromous and
resident fish in the pool and relocate
them prior to blasting activities. This
measure would physically remove fish
from areas where they could experience
negative impacts due to blasting and
would be protective of these fishes. This
measure could result in some negative
effects to captured fish including net
abrasion, short-term physiological
stress, sublethal injuries, mortality, and
increased predation during transport or
as a result of relocation to less optimal
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
habitat. Capture of all individuals in the
plunge pool prior to blasting would be
difficult given the size of the pool (400
feet long by 80 to 100 feet wide by ≥ 20
to 30 feet deep) and the turbulence
created by the falls. Accordingly, some
fish, particularly smaller fish such as
juvenile UCR steelhead, would remain
in the deep pool below the falls after
removal efforts. After fish are removed
from the plunge pool, Okanogan PUD
proposes to use netting across the
Similkameen River which would
exclude fish from re-entering the blast
zone.
Okanogan PUD proposes visual
biological monitoring during
construction of project facilities to
observe mortalities or changes in fish
behavior that might make them more
susceptible to predation. As noted by
Okanogan PUD, however, the physical
characteristics of the plunge pool would
make it difficult to effectively monitor
the area of impact effectively. If
biological monitors were to observe
mortalities or changes in fish behavior,
Okanogan PUD also does not specify
what kind of mitigative or protective
actions may be taken.
Direct or indirect effects of the
blasting activities may cause mortality
or injury to ESA listed UCR steelhead.
Additional discussion of effects on the
listed steelhead is included in section
3.3.5, Threatened and Endangered
Species.
Because there is the potential for
adverse effects on a listed species (UCR
steelhead) and other high-value species
(Chinook salmon), and that the PUD’s
proposed Blasting Plan does not resolve
all issues related to blasting, it would be
appropriate for Okanogan PUD to
consult with the TRG in preparing a
final Blasting Plan. Involving the
agencies that comprise the TRG in the
development of this plan would ensure
that all appropriate protection measures
are considered and included in the plan.
Sediment
In its comments in response to the
REA notice, NMFS recommends that
Okanogan PUD prepare and implement
a Soil Erosion Control Plan to guide
project construction, as well as
operation and maintenance of the
project. Interior recommends that
Okanogan PUD develop and implement
an Erosion and Sedimentation
Management Plan.
In response to the agency comments
and recommendations, Okanogan PUD
developed a Spill Response Plan, and a
Storm Water Pollution Prevention Plan.
The Spill Response Plan would be
implemented at project initiation.
Construction plans would be developed
PO 00000
Frm 00037
Fmt 4701
Sfmt 4703
28541
prior to construction, and BMPs would
be implemented during all construction
activities.
To characterize the hydraulic
transport of sediment through the
project, Okanogan PUD performed a
modeling effort using the River 2D
model. Results of the modeling show
that sediment in the Enloe reservoir
undergoes an annual deposition and
erosion cycle.22 Currently, Enloe dam
acts as a sediment trap during low flow
portions of the year (May through
December). Low flow periods
correspond with low water velocities
from which suspended sediments settle
creating a mound of sediment in the
project reservoir near the dam. This
mound of sediment is washed
downstream annually during high flow
periods (January through April) when
flows increase by a factor of 20 or more.
This sediment is washed over the dam
and is transported downstream.
Under Okanogan PUD’s proposed
project operations, sediment transport
in the Similkameen River in the project
vicinity would change slightly.
Okanogan PUD would divert up to 1,600
cfs through the turbines during all
months of the year. Sediment carried in
this water would still be transported
downstream of the dam, but would do
so by traveling through the powerhouse
as opposed to spilling over the dam.
Flows during the high flow portion of
the year (January through April), which
range on average from 1,800 to 7,600 cfs,
would exceed the hydraulic capacity of
the project and would spill over the
dam as now occurs, transporting
sediment out of the project reservoir and
into the river downstream of the
powerhouse. Overall, proposed project
operations would have a negligible
effect on the current cycle of sediment
transport in the Similkameen River.
Sediment deposited in the reservoir
may be transported downstream during
project construction and operation. This
could result in both adverse and
beneficial impacts to aquatic resources.
Adverse impacts would include shortterm turbidity plumes and
sedimentation from construction
activities, which could cause mortality
of eggs, fry, and juvenile fish due to
smothering or abrasion. Re-suspension
of contaminated sediments containing
elevated levels of copper or arsenic
could also occur and lead to
bioaccumulation of those contaminants
in fish eggs or fry, and to acute levels
in predatory fish and insectivores such
as salmonids and bass. Additional
sedimentation, however, could provide
22 Results of the River 2D modeling are found in
Appendix E.2.3 to the license application.
E:\FR\FM\17MYN2.SGM
17MYN2
28542
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
benefits to species that utilize sediment
as their preferred habitat. Species
potentially benefiting from any
deposition of finer sediments would
include the Pacific lamprey (which
spends most of its life in freshwater
submerged in fine sediment), western
ridged mussel, western pearlshell
mussel, western floater mussel, and the
California floater.
Okanogan PUD proposes to develop
and implement two measures to
mitigate for possible sediment inputs
into the Similkameen River due to
project construction and operation: an
ESCP and a CSMP. These measures are
discussed in more detail in section
3.3.1.2.
As noted above, Okanogan PUD
proposes a Spill Response Plan and a
Storm Water Pollution Prevention Plan.
The Spill Response Plan includes
practices to minimize the chances or
severity of spills of hazardous materials
into or near the river. These practices
include: Ensuring all hazardous
materials are safely sealed; immediate
cleaning-up of all spills according to
manufacturer’s recommended methods;
properly disposing of waste generated
during spill clean-up; and notifying
state and local government agencies in
the case of spills. The Storm Water
Pollution Prevention Plan includes
BMPs to prevent erosion in project areas
and to protect water quality. The BMPs
include: visibly marking land-clearing
limits; controlling river flow rates;
installing sediment controls such as
straw bales, silt fences, and sandbags;
stabilizing all disturbed soils; protecting
slopes in the project area; stabilizing all
channels and outlets; and controlling
pollutants. The implementation of these
plans would be protective of aquatic
resources in the project area.
Okanogan PUD’s proposals for an
ESCP, a CSMP, a Spill Response Plan,
and a Storm Water Pollution Prevention
Plan would minimize short-term
degradation of aquatic habitat during
construction, including critical habitat
for UCR steelhead and EFH for Chinook
salmon.
Enhancement Measures for Resident
Fish (FISH–02)
Okanogan PUD proposes to construct
light-colored boulder clusters to
improve mountain whitefish habitat and
recreational fisheries in the river
upstream of the reservoir.
Washington DFW and Interior do not
recommend the proposed boulder
clusters because they say that the
mountain whitefish fishery above the
dam is limited and restricted to the
winter months. Interior also suggests
that the boulder placement may create
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
a further heat sink and increase water
temperatures. Instead, these agencies as
a part of the Fisheries Enhancement
Plant and Resident Fish Habitat
Management Plan, respectively,
recommend annual stocking of
catchable-size sterile, triploid rainbow
trout to provide a greater recreational
fishery opportunity. Okanogan PUD
states that it would consider
contributing up to $60,000 (the cost of
the boulder clusters) towards a trout
stocking program for the term of the
license, if the other state and federal
agencies, tribes, and other stakeholders
agree.
The Colville, the Ministry of
Environment, and the Canadian Parks
and Wilderness Society have expressed
concerns throughout the licensing
process that Washington DFW and
Interior’s recommendation for
introduced fish stocks of triploid
rainbow trout would pose an
unacceptable risk to resident fishes due
to potential disease transfer and
competition for food and space, while
providing a limited contribution to the
recreational fishery.
Our Analysis
Most of the fish in the reservoir are
non-native species that are better
adapted to warmer, slower velocity
habitat than native coldwater
salmonids. The project would raise the
elevation of the reservoir by 4 feet, and
therefore, would result in more lake
habitat and less riverine habitat for
coldwater resident fishes. Okanogan
PUD’s proposal to add boulder clusters
upstream of the reservoir to provide
habitat for resident fish would create a
small amount of pool habitat behind the
clusters that could be utilized by native
mountain whitefish. However, very few
whitefish (0 in 2006; 2 in 2007) have
been found in the reservoir during
recent surveys, likely due to a
combination of northern pikeminnow
predation, warm water temperatures,
lack of cover, and the sand-silt
substrate. Therefore, it is unlikely that
the proposed boulder clusters would
provide much of any benefit to the very
limited mountain whitefish fishery in
this section of the river.
The introduction of hatchery fish
stocks would provide a limited and
short-term contribution to the
recreational fishery, because water
quality and high water temperatures in
the Similkameen River would only
allow a fishery during the cooler months
of the year. The stocked rainbow trout
may not survive in the river during the
warmer summer months. Stocked
rainbow trout would also pose a threat
to native fish stocks in the United States
PO 00000
Frm 00038
Fmt 4701
Sfmt 4703
and Canada due to potential for disease
transfer and competition for food and
habitat. In addition, although fish
occurring in the river upstream of the
project may utilize the project reservoir
at times, the proposed run-of-river
operation of the reservoir would likely
have no effect on these species and
would not affect the riverine habitat
upstream of the reservoir.
Large Woody Debris Transport (FISH–
03)
Large woody debris is an important
component of a healthy stream
ecosystem. Large trees that fall into
streams perform an important role in
forming pools, regulating storage and
routing of sediment, and trapping
spawning gravel. Large woody debris
also provides complex fish habitat that
increases carrying capacity, high flow
refugia for fish, and substrate for
macroinvertebrates. Enloe dam prevents
the supply and transport of all large
woody debris from the upper
Similkameen River Basin to the lower
river, except during high flows. The
lower river has low levels of large
woody debris, and currently all wood
that enters the reservoir from the upper
basin is either passed over the dam
during flood stage or removed from the
reservoir and not returned to the river
below the dam. Lack of large woody
debris from the upper basin may
contribute to a reduction in structural
habitat complexity for fish and
macroinvertebrates downstream of the
dam.
Okanogan PUD proposes to allow
large woody debris to pass over the
spillway during the annual flood flows;
allow natural downstream transport of
the woody debris; and would transport
some large woody debris around the
dam and place it in the river
downstream of the dam, if needed.
Transport of large woody debris would
occur once annually during the
recession of the annual high flow.
Interior recommends a plan 23 for the
collection and relocation (downstream
transport) of large woody debris to be
completed at least 1 year before the start
of any land-disturbing or land-clearing
activities.
Our Analysis
Okanogan PUD’s proposal to allow
natural wood passage over the dam
during large flood events when the crest
gates on the spillway would be fully
open, and to supplement that supply of
woody debris by transporting large
wood impounded by the dam to the
23 As a part of their recommended Fisheries
Enhancement Plan.
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
river below the dam, would provide
additional anadromous and resident fish
and macroinvertebrate habitat and
would increase productivity
downstream of the dam. Development of
a large woody debris transport plan after
consultation with FWS, NMFS, Interior,
Washington DFW, and the Colville
would help to guide implementation of
the measures, including providing
direction on determining when such
transport would be required, the
methods to be used for collection and
transport of the wood, and the best
locations for release of the woody debris
downstream of the dam.
Intake Trashrack, Entrainment Studies,
and Fish Monitoring (FISH–04 and
FISH–05)
Entrainment into the intakes and
passage through the turbines could
result in injury or mortality to resident
reservoir fish that are attempting to
move downstream. Additionally, larger
fish could become impinged on the
trashrack causing possible injury or
mortality. Okanogan PUD proposes to
install a modified intake trashrack
adjacent to the existing dam overflow
spillway with provisions for a low
velocity approach channel, and a
trashrack at the intake with narrow
(1-inch) bar spacing to prevent
entrainment of large fish. Okanogan
PUD also proposes to generate with
Kaplan turbines, which generally cause
low mortality for any small fish
entrained into the power flow.
Okanogan PUD proposes to file detailed
design drawings of the modified
trashrack intake and the trashrack
cleaning system no later than 180 days
prior to start of construction. Okanogan
PUD also proposes to monitor adult and
juvenile impingement and entrainment
effects and to conduct quarterly fish
sampling over a 1-year period.
Interior and Washington DFW
recommend filing detailed design
drawings of an intake fish screen and a
schedule to build the screen before the
start of any land-disturbing or landclearing activities, as well as a
monitoring plan and corrective actions
to minimize fish impingement and
entrainment.
Our Analysis
sroberts on DSK69SOYB1PROD with NOTICES
Impingement
The proposed spillway would provide
a 276-foot-long exit from the reservoir
for any downstream moving fish. During
high-flow periods, this route would
have high approach velocities. By
comparison, the proposed power intake
is a much smaller outlet with a lower
approach velocity. Diverting water from
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
the spillway to the power intake would
likely draw some fish toward the intake
and away from passage over the
spillway, potentially exposing these fish
to impingement on the trashracks or
entrainment through the turbines.
However, the modified trashrack with
1-inch bar spacing proposed by
Okanogan PUD would be designed so
that smaller fish can pass safely through
the racks without becoming impinged,
and larger fish (greater than 6 inches in
length) would be discouraged or
prevented from passing through the
racks and in turn the turbines.
Okanogan PUD calculated the average
monthly water velocities 24 at the
trashrack to examine impingement risk
for larger fish. Estimated monthly
average velocities at the trashrack
ranged from 1.06 feet per second (fps) to
2.91 fps, depending on the intake flow
and associated river flow and reservoir
elevation. Swimming speeds of fish
known to reside in the project reservoir
were collected for comparison to water
velocities at the trashrack, to examine if
resident fish would be able to swim
away from the trashrack, thus avoiding
impingement. Nine of the fish species
known to reside in the reservoir 25 are
able to reach burst speeds 26 of between
4.6 and 10 fps (for adult life stages).27
These species would be able to swim
away from the trashracks in all months
of the year, avoiding impingement.
From April to July, predicted velocities
at the trashrack would average 2.65 fps,
which could result in impingement for
two species known to reside in the
reservoir. Northern pikeminnow and
chiselmouth have burst swimming
speeds of 2.5 fps, and thus would be
susceptible to impingement if unable to
avoid the intake flow. Fishes impinged
would be subject to injury and
mortality, which would be most likely
to occur from April to July.
Entrainment
Reservoir sampling showed that most
of the small, resident fish in the
reservoir are found in shallow water
areas with cover. Accordingly, very few
24 See Okanogan PUD AIR response filed on July
21, 2009. In this AIR response, Okanogan
incorrectly stated that burst speed for largemouth
bass is 2.1 fps. Appalachian Power Company (2009)
collected critical swimming speeds for largemouth
bass from 10 studies identified in the literature and
were able to estimate that the burst speed of
juvenile largemouth bass is between 3.2 to 4.3 fps,
while adults would be capable of faster speeds.
25 These species are bridgelip sucker, largescale
sucker, unidentified sunfish species (genus
Lepomis), common carp, yellow perch, rainbow
trout, Kokanee salmon, and mountain whitefish.
26 A speed that can be maintained for a short
period of time, typically seconds.
27 See Okanogan PUD AIR response filed on July
21, 2009.
PO 00000
Frm 00039
Fmt 4701
Sfmt 4703
28543
small fish are expected to be in the area
of the intake because of unsuitable
habitat (deep open-water habitat with
steep, almost vertical walls). Two native
species—chiselmouth and northern
pikeminnow—would have the greatest
potential of occurring near the intake.
Native suckers, mountain whitefish, and
introduced species, such as largemouth
bass, carp, and yellow perch, may also
be present near the intake. Resident
rainbow trout were not found between
the U.S./Canadian border and Enloe
dam during recent studies, and probably
would not occur near the intake.
Because the population density of fish
in the reservoir is low, and the project
would have narrow-spaced trashracks,
the rate of entrainment at the project
would likely be low resulting in
undetectable effects of the population
levels of resident fishes in the reservoir.
Additionally, the survival rates of fish
that would be susceptible to
entrainment (those less than 6 inches in
length) after passing through the
turbines have been estimated to be 84%
to 95%.28
Okanogan PUD proposes to monitor
seasonal variation in entrainment
susceptibility, entrainment mortality,
and fish populations in the reservoir
after project construction. Both
entrainment levels and mortality of
entrained fish are expected to be very
low. Additionally, effects of project
entrainment on reservoir populations
are expected to be minor. Therefore,
these data collection efforts likely
would not produce useful data.
Additionally, Okanogan PUD did not
specify if these monitoring efforts would
lead to adaptive management, if needed,
to adjust the proposed measures to
reduce any adverse effects associated
with operation of the intake.
The agencies recommendation for a
fish screen did not include any design
details, so we are unable to determine
how the performance of the proposed
narrow-spaced trashrack would
compare to a fish screen. However,
Okanogan PUD’s proposed trashrack
would achieve the same goal of
physically excluding the majority of fish
approaching the intake. Fish screens
cost much more than trashracks to
build, install, and maintain. The
proposed trashrack would achieve
similar results at a much lesser cost than
a fish screen. To ensure that the
applicant’s proposed narrow-spaced
trashrack achieves similar exclusionary
goals of a fish screen, it would be
beneficial for Okanogan PUD to consult
28 Survival rates were calculated by Okanogan
PUD using the U.S. Department of Energy’s
Advanced Hydro Turbine System Program.
E:\FR\FM\17MYN2.SGM
17MYN2
28544
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
with the fisheries agencies during the
final design of the intake structure and
trashracks. By including some or most
of the design features of a fish screen
into the design of the narrow-spaced
trashrack, fish protection would be
provided concurrently with protection
of the generating equipment from the
influx of trash.
Tailrace Net Barrier and Tailrace Video
Monitoring (FISH–06 and –07)
sroberts on DSK69SOYB1PROD with NOTICES
Operation of the project may attract
upstream migrating fish into the turbine
discharge flow. It is expected that this
behavior could result in UCR steelhead
or anadromous salmonids attempting to
enter the draft tubes and swim through
the draft tubes to an area near the
turbine runner blades. Fish may be
injured or killed by impact with the
spinning runner blades during partial
load operation when velocities
downstream of the turbine may be low
enough for the fish to reach the turbine
runner. Okanogan PUD proposes to
design (after consultation with NMFS),
install, and operate a net barrier at the
outlet of each draft tube. Okanogan PUD
proposes to maintain the nets and to
develop a written operation plan in
consultation with NMFS. Okanogan
PUD also proposes to monitor the
effectiveness of the tailrace barrier nets
through the use of underwater
videography. Okanogan PUD would
submit draft and subsequent design
plans to NMFS; obtain NMFS’ approval
of design specifications for the tailrace
barrier; and file a detailed design of the
barrier nets with the Commission at
least 180 days before the start of any
land-disturbing or land-clearing
activities. Okanogan PUD also proposes
to develop and implement a
postconstruction evaluation and
monitoring plan and an inspection and
maintenance plan.
NMFS recommends that when
downstream oriented velocities in the
draft tube are less than or equal to 27
feet per second (the highest burst
swimming speed attainable by UCR
steelhead) the tailrace barrier should be
in place and operated as designed.
NMFS states that development of the
final detailed barrier designs (in
consultation with NMFS), including
expected approach velocities, be
completed 180 days prior to the start of
any land-disturbing activities. NMFS
further recommends that these final
designs include a hydraulic evaluation
of the facilities; a written operation
plan; a postconstruction evaluation and
monitoring plan; a contingency plan in
the event the proposed tailrace net
barriers do not perform according to
criteria; and an inspection and
maintenance plan.
Washington DFW and Interior make
similar recommendations regarding the
need for the tailrace barriers and
consultation; however, these agencies
recommend the filing of detailed design
drawings with the Commission at least
1 year before the start of any landdisturbing or land-clearing activities.
Our Analysis
Of the fishes that are found in the area
where the tailrace would be located,
UCR steelhead are the strongest
swimmers, and therefore would be most
likely to be able to access the draft tubes
while the project is operating. Adult
UCR steelhead are strong swimmers and
are reported to have a burst speed of 27
feet per second (Bell, 1986). During full
load operation, the water velocity
immediately downstream of the turbine
runner blades would exceed this burst
speed, creating a velocity barrier that
would prevent fish from reaching the
area where injury or mortality could
occur. Installation of a net barrier at the
outlet of each draft tube, however,
would provide a physical barrier to
prevent injury to fish during periods of
reduced generation, when water
velocities would be lower than
steelhead burst speed and too low to
maintain the velocity barrier.
Okanogan PUD would use underwater
video cameras during the peak presence
of UCR steelhead, Chinook, and sockeye
salmon during the first two years of
operation, to monitor the openings of
the net barriers. The video would be
reviewed to document if adult
salmonids are able to enter the area
where barrier nets are deployed, and if
so, if the nets effectively prevent fish
from moving further upstream into the
draft tubes, and if fish are able to safely
exit the barrier net locations. This
measure would allow Okanogan PUD to
monitor the effectiveness of the tailrace
barriers nets. It would also allow for
adaptive management, so that the
tailrace barriers nets location or design
could be adjusted or operated in a more
efficient or effective manner, if possible.
The use of underwater videography
would ensure that anadromous
salmonids and resident fishes are
protected from entering the draft tubes
where mortality or injury could result.
It is expected that the final barrier
design, the operation plan,
postconstruction evaluation and
monitoring plan, and the inspection and
maintenance plan, to be developed after
consultation with NMFS, and filed with
the Commission for approval, would
provide sufficient assurance that the
proposed barrier net designs would
provide adequate protection to fish
downstream of the proposed
powerhouse.
Run-of-River Operations (FISH–08)
Okanogan PUD proposes to operate
the Enloe project in a run-of-river mode.
The 370-foot-long bypassed reach would
receive a minimum flow of 10 or 30 cfs
(see below) during the lower flow
months when river flow is equal to or
less than the hydraulic capacity of the
powerhouse. Powerhouse discharges
would be returned to the river below the
falls.
Our Analysis
The proposed run-of river operations
would have no effect on water quantity
above the dam or downstream of the
project powerhouse at the base of the
falls. This would be protective of the
current fisheries habitat in the lower
Similkameen River downstream of the
falls, as river flows would be unchanged
from current conditions.
Ramping Rates
Okanogan PUD proposes to
implement interim ramping rates based
on Washington State guidelines (Hunter,
1992) to protect aquatic resources
downstream of the tailrace (table 13).
The ramping rates would apply to
changes in hourly water elevations
associated with project operation during
normal powerhouse start-up and shutdown. Temporary modifications to
ramping rates may be needed to address
operating emergencies or planned
outage.
TABLE 13—PROPOSED RAMPING RATES
[Source: Hunter, 1992]
Season
Daylight a
February 16 to June 15 .......................................................
June 16 to October 31 .........................................................
No ramping ..........................................................................
2 inches per hour ................................................................
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00040
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
Night b
17MYN2
2 inches per hour.
1 inch per hour.
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
28545
TABLE 13—PROPOSED RAMPING RATES—Continued
[Source: Hunter, 1992]
Season
Daylight a
Night b
November 1 to February 15 ................................................
2 inches per hour ................................................................
2 inches per hour.
Notes:
a Daylight is defined as the period from 1 hour before sunrise to 1 hour after sunset.
b Night is defined as the period from 1 hour after sunset to 1 hour before sunrise.
sroberts on DSK69SOYB1PROD with NOTICES
Interior, Washington DFW, NMFS,
and American Rivers et al. recommend
implementation of the ramping rates
shown in table 13 for the protection of
aquatic resources. These agencies
recommend that temporary
modifications of the ramping rates that
may be needed due to operating
emergencies or planned outages should
be developed by mutual agreement
among Okanogan PUD and the
interested agencies and tribes. To
expedite these discussions, Okanogan
PUD requests that these agencies be
required to appoint a single local
representative who has the authority to
address such operational issues. If the
interim ramping rates are so modified,
Okanogan PUD would notify the
Commission, as soon as possible, but no
later than 10 days after each such
incident. A second issue regarding
ramping rates was described in the
applicant’s recent filings, related to
ramping rates immediately downstream
of Enloe dam when spillage flows are
reduced as the project powerhouse is
brought on line. The September 2010
snorkeling survey conducted by
Washington DFW and Washington DOE
identified bedrock benches along the
shoreline of the plunge pool that could
strand fish if spillage over the dam was
to be reduced at a rate where fish could
not vacate that habitat before it is
dewatered. As a result, Okanogan PUD
now proposes to determine the critical
flow thresholds related to dewatering of
these bedrock benches, based on field
observations, so that appropriate
downramping of spillage flows can be
made between those flow thresholds
(letter from Donald H. Clarke, Counsel
to Public Utility District No. 1 of
Okanogan County, to Kimberly Bose,
Secretary, FERC, October 28, 2010).
Our Analysis
Okanogan PUD proposes the interim
ramping rates recommended by Interior,
Washington DFW, NMFS, and American
Rivers et al., for the protection,
mitigation of damages to, and
enhancement of aquatic resources
downstream of the powerhouse. Rapid
flow reductions in a stream channel,
especially in low gradient stream areas,
have the potential to strand fish in
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
dewatered areas including pools and
side channels. Fry and juvenile fish less
than 2-inches-long are most vulnerable
to potential stranding due to weak
swimming ability; preference for
shallow, low velocity habitat such as
edgewater and side channels; and a
tendency to burrow into the substrate to
hide. The magnitude of change can also
affect habitat use and the production of
macroinvertebrates that are vulnerable
to drift or stranding. Side channels are
particularly susceptible to dewatering
and disconnection from the main
channel as flows recede. As a result,
young-of-the-year salmonids that prefer
to rear in side channels (e.g., UCR
steelhead) may be stranded.
Based on Hunter (1992), we expect
that the interim downramping rates
described in table 13 should protect
Chinook salmon and UCR steelhead
redds and fry, and juvenile Chinook
salmon, UCR steelhead, sockeye salmon,
and aquatic macroinvertebrates from
stranding and mortalities associated
with flow fluctuations downstream of
the powerhouse. In addition, because
the project would operate in a run-ofriver mode, any reductions in
powerhouse flow would result in an
immediate increase in spillway flows,
which would also enter the pool at the
base of the falls at about the same time
that powerhouse flows are reduced.
Thus, the pool at the base of the falls
and the Similkameen River downstream
of this pool would not experience wide
water level fluctuations under normal
operations. This proposed operation and
the proposed ramping rates would also
protect UCR steelhead designated
critical habitat and Chinook salmon
EFH downstream of Similkameen Falls.
Recently proposed measures to limit
downramping of spillage flows
immediately downstream of Enloe dam
would protect any resident species from
potential stranding on bedrock benches
along the shoreline of the plunge pool.
Identifying the critical flow thresholds
and associated water elevations in
relation to the bedrock benches would
allow development of actual ramping
rates between those flow thresholds.
Okanogan PUD proposes that these flow
thresholds be determined by field
observations and monitoring prior to
PO 00000
Frm 00041
Fmt 4701
Sfmt 4703
initiation of project operations, but does
not specify what the ramping rates
would be once the flow thresholds are
determined. It would be appropriate to
determine the flow thresholds by field
observations, because there have been
no detailed surveys of the river
bathymetry or instream flow modeling
in the bypassed reach. Future ramping
rates would still need to be determined,
as appropriate rates in the bypassed
reach may not necessarily be the same
as those outlined in Hunter (1992).
Therefore, a study plan would be
required that would describe how the
flow thresholds would be determined by
field observation, and how future
downramping rates for the bypassed
reach would be developed. This study
would need to be prepared in
consultation with Washington DFW,
Washington DOE, FWS, and the
Colville, and filed with the Commission
for approval.
Ramping Rate Compliance Monitoring
Okanogan PUD proposes to use the
existing Washington DOE gage in the
lower Similkameen River to monitor
ramping rate compliance downstream of
the powerhouse. Interior, Washington
DFW, NMFS, and American Rivers et al.
recommend that the location to measure
compliance should be determined by
Okanogan PUD in consultation with
Interior, NMFS, Washington DOE,
Confederated Tribes and Bands of the
Yakama Indian Nation (Yakama
Nation),29 and the Colville, before
project operation begins.
Our Analysis
The Washington DOE gage that
Okanogan PUD proposes to use to
monitor ramping rate compliance on the
lower river is located in Oroville at river
mile 5, nearly 4 miles downstream of
the project site. Sites for monitoring
compliance with ramping rates should
be located in relatively close proximity
to project discharges, so that gage
heights recorded reflect the water
surface elevations immediately
downstream of the powerhouse. It is
29 NMFS and Interior’s 10(j) recommendation for
compliance of the ramping rates included
consultation with the Yakama Nation.
E:\FR\FM\17MYN2.SGM
17MYN2
28546
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
unlikely that the existing DOE gage in
Oroville would meet these criteria,
because any small fluctuations in
discharge from this proposed run-ofriver project would likely be attenuated
in the 4 miles of river between the
tailrace and the gage.
Interior, Washington DFW, NMFS,
and American Rivers et al.’s
recommendation that a monitoring site
would need to be established as a result
of consultation between those parties
and Okanogan PUD would ensure that
the location for monitoring ramping rate
compliance would be near the project
and would adequately measure the
ramping rates. The result of this
selection process could require the
installation of a new monitoring gage on
the Similkameen River near the project’s
tailrace. A plan detailing how Okanogan
PUD would monitor compliance with
their proposed ramping rates, including
the location selected for doing so would
be beneficial and would need to be filed
with the Commission for approval.
sroberts on DSK69SOYB1PROD with NOTICES
Flow Continuation
Interior recommends development of
a plan that would provide up to 48
hours of flow continuation in the event
of emergency project shutdown at the
unmanned, remotely operated
powerhouse. Interior also recommends
that the crest gates or flow continuation
valves for each penstock be designed to
open automatically to provide outflow
into the lower river from a combination
of the tailrace and spillway flows, so
that river flow never drops below the
level of inflow to the reservoir. Interior
further recommends that the plan
include detailed drawings and flow
capacities for the proposed crest gates or
flow continuation valves.
Our Analysis
In the case of an unplanned outage,
the power plant control system would
open the crest gates automatically to
maintain tailwater elevation at the
powerhouse to within the proposed
ramping rate described above (table 13).
This would ensure an uninterrupted
flow of water downstream of the project
tailrace. A small, short-term fluctuation
in downstream flows could occur as
flow through the powerhouse is reduced
and flow over the spillway crest gates
increases. The estimated travel time
from the spillway to the pool below the
falls depends on flow, but is estimated
to be about 1 minute. Thus, any
fluctuation in river flow downstream of
the project would be of short duration
and would be attenuated by water
storage in the large pool below the falls
and in the river channel further
downstream. Therefore, the proposed
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
crest gate operations, as described,
would protect and maintain aquatic
habitat downstream of the project, and
there would be no need for a specific
flow continuation plan as recommended
by Interior. Flow continuation would
occur as part of normal project
operations, so downstream aquatic
habitat, including UCR steelhead
designated critical habitat and Chinook
salmon EFH below Similkameen Falls,
would be protected in the event of
operating emergencies or planned
outages.
Anadromous Fish Passage at Enloe
Dam
Under the current proposed action,
fish passage would not be provided at
the dam, and the 370-foot long bypassed
channel would be reduced to a
minimum flow of 10 or 30 cfs during the
low flow months when most of the river
flow would be diverted through the
powerhouse and returned to the river
below the falls.
American Rivers et al., BIA, and
CRITFC commented that the issue of
fish passage was not resolved in a
previous license proceeding for this site;
there is suitable anadromous habitat
above the dam; and this issue needs to
be resolved prior to issuance of a new
license. CRITFC recommends that the
applicant work with CRITFC’s member
tribes, the BIA and other parties to
resolve the issue of historical anadromy
by employing the best available
scientific methods including
paleolimnological, genetic and
archeological studies. CRITFC and BIA
also requested production potential
estimates for salmon and UCR steelhead
be included as part of a fish passage
alternative in the current licensing
proceeding. The BIA commented that
cost estimates for designing,
constructing, operating, and
maintaining upstream and downstream
fish passage facilities for the term of the
license need to be developed in case
such an action is required in the future.
The Colville, Okanogan Nation
Fisheries Commission, Canadian Parks
and Wildlife Society British Columbia
Chapter, and the Ministry of
Environment oppose introduction of
anadromous fish passage above the falls
based on the belief that historical
anadromy never occurred above the
falls, and introduction of anadromy
would have negative impacts on
resident fishes and other aquatic life
due to disease transfer and competition
for food and habitat; would provide a
limited contribution to a recreational
fishery in the upper river; and would
violate traditional laws, the Coyote
mythology that prohibits fish passage at
PO 00000
Frm 00042
Fmt 4701
Sfmt 4703
the falls, and sacred principles of the
Tribes (Vedan, 2002).
FWS has determined that it does not
have sufficient information to support
filing a Section 18 prescription for
fishways for the Enloe Project at this
time, because of the uncertainty of
historical anadromy above the falls.
Both FWS and NMFS recommend that
upstream anadromous fish passage
facilities not be required now, and have
reserved their authority to require fish
passage under Section 18 in the future.
Our Analysis
There are no documented accounts of
Chinook salmon, sockeye salmon, UCR
steelhead, or Pacific lamprey anadromy
above Similkameen Falls. Aboriginal
traditional beliefs suggest that
Similkameen Falls historically blocked
anadromy (Vedan, 2002). In an Annual
Report of the Department of Indian
Affairs for the Year Ended December
31st, 1890, the Indian agent reported
that ‘‘at the mouth of the Similkameen
River, in the United States Territory, are
falls which prevent the ascent of salmon
up the Similkameen...I have several
times urged Indians to construct a fish
ladder and thus provide themselves
with a supply of salmon...’’ (Department
of Indian Affairs, 1890, in Vedan, 2002).
More recently, conservation planners
with knowledge of the affected area and
fish populations have weighed in on the
issue. The Okanogan Sub-basin Plan,
which was prepared for the Northwest
Power and Conservation Council,
concluded that Similkameen Falls was
an impassable historic barrier to
upstream salmon migration (KWA
Sciences et al., 2004). The Similkameen
watershed above Enloe dam was not
included in their sub-basin salmon
ecosystem analysis for this reason.
In 2007, the Upper Columbia Salmon
Recovery Board issued the Upper
Columbia Spring Chinook Salmon and
Steelhead Recovery Plan. The Upper
Columbia Salmon Recovery Board is
composed of representatives from
Chelan, Douglas, and Okanogan
counties, the Colville, and the Yakama
Nation. Their recovery plan does not
identify upstream and downstream
passage of fish at Enloe dam as being a
short-term or long-term action that
would contribute to the restoration of
these fish stocks, based on the
uncertainty of fish being able to ascend
Similkameen Falls before the
construction of Enloe dam (Chapman et
al., 1994).
Several entities including,
Washington DFW, American Rivers et
al., and CRITFC believe that steelhead,
Chinook salmon, sockeye salmon, and
Pacific lamprey may be able to ascend
E:\FR\FM\17MYN2.SGM
17MYN2
sroberts on DSK69SOYB1PROD with NOTICES
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
the falls and access the bypassed reach
above Similkameen Falls under some
flow conditions. No data, provided in
this proceeding, however, have shown
this to occur, or to be a likely
possibility. Washington DFW has stated
that it has anecdotal information that
places anadromous fish above the falls,
that UCR steelhead penetrated farther
upstream of the falls before construction
of Enloe dam, and that rainbow trout
above the dam probably retain genetic
similarity to UCR steelhead; however,
Washington DFW did not provide such
information confirming these assertions.
In an effort to understand the
historical range of anadromous fishes in
the Similkameen River, CRITFC
commissioned Ford (2010a) to analyze
sediment core samples collected in
Palmer and Blue lakes upstream of
Enloe dam. Sediment core samples were
collected and analyzed for isotopic
content. The core samples appear to
contain isotopic signatures
characteristic of marine-derived
nitrogen, possibly indicating anadromy;
however, the preliminary analyses were
inconclusive and additional analysis is
under way (Ford, 2010a, b; Myers,
2010). CRITFC recommends that
additional studies similar to Ford
(2010a) be required to attempt to resolve
the issue of whether anadromy occurred
upstream of the falls. While such
studies may provide some indication of
the former presence of anadromous fish
upstream of the falls, Ford (2010b) states
that such results by themselves would
not provide ‘‘compelling evidence’’ that
anadromous species once occurred
above the falls.
CRITFC and BIA requested that
production potential estimates for
salmon and UCR steelhead be included
as part of a fish passage alternative in
the current licensing proceeding. The
CRITFC letter included estimates that
the habitat upstream of Enloe dam could
support approximately 55,000 Chinook
salmon and 98,000 steelhead spawners.
Although undoubtedly there may be
some suitable habitat for salmon and
steelhead upstream of Enloe dam, based
on available information in the
literature, it appears that anadromous
fish likely did not pass the Similkameen
Falls in substantial numbers prior to the
construction of Enloe dam. An
occasional account of a sighting of an
anadromous fish above the falls does
not outweigh the lack of historic record
describing a salmon and UCR steelhead
fishery or population above the falls.
Native American and First Nation belief
that salmon were blocked from the
upper reaches of the Similkameen River
above the falls is additional support that
salmon and UCR steelhead did not
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
ascend the falls and enter the upper
reaches of the river to spawn prior to the
construction of Enloe dam.
Regardless of whether anadromous
fish historically migrated to areas
upstream of Similkameen Falls, if
Okanogan PUD were to provide for fish
passage at the project, anadromous
fishes that have been known to occupy
the plunge pool would be able to access
habitat in the Similkameen River
upstream of Enloe dam for spawning
and rearing. Benefits to anadromous
species could include an increase in the
populations of these fish stocks, as they
gain additional spawning and nursery
habitat in the upper Columbia River
basin. Other benefits to upstream
aquatic habitat would be the influx of
marine nutrients through the decay of
salmon carcasses, which would benefit
primary production and the entire food
chain, potentially enhancing resident
fish populations. Passing adult
anadromous species upstream would
also have the potential to enhance the
sport fishery in the river, depending on
regulations that would likely be put in
place to protect stocks introduced to the
upper Similkameen River.
The extent that these potential
benefits might occur is not known, and
the introduction of anadromy to the
upper Similkameen River could also
have negative impacts on both the
anadromous and resident fishes in the
river. Anadromous fishes reaching the
upper river may or may not access
suitable spawning and nursery habitat,
as the reach immediately upstream of
Enloe dam (the reservoir) is not highquality salmonid habitat. While there
may be suitable habitat upstream of the
reservoir, juveniles of anadromous
species that are successfully spawned
and rear upstream of Enloe dam would
also face an additional impediment to
downstream migration, the Enloe
Project, which fish in the lower
Similkameen River would not face.
Although the project may be required to
provide downstream fish passage
facilities if anadromous species are
introduced upstream, such facilities are
seldom 100 percent effective, so fish
from the upper river would be exposed
to potential delay, injury, and mortality.
Resident species could be adversely
affected by the introduction of
anadromous species by the potential for
disease transfer and competition for
food and habitat between resident and
anadromous species.
Location of the Tailrace (FISH–09)
UCR steelhead, Chinook salmon, and
sockeye salmon enter the cooler
Similkameen River and migrate as far
upstream as Similkameen Falls during
PO 00000
Frm 00043
Fmt 4701
Sfmt 4703
28547
the summer months. The large, deep
plunge pool below Similkameen Falls is
used as holding habitat until
temperatures in the Similkameen and
Okanogan rivers decrease and these
species can begin their spawning
activities (figure 4). Chinook salmon
arrive in the plunge pool in July and
August, and hold prior to spawning in
the lower river. Sockeye salmon use the
pool in August and September while
also holding prior to spawning in the
fall. Sockeye and Chinook salmon
generally leave the pool by the end of
September. Juvenile sockeye and
Chinook salmon are not known to
utilize the pool area. Adult UCR
steelhead occur in the plunge pool
below Similkameen Falls from
September through March. Juvenile
UCR steelhead can be found in the pool
year-round.
Currently all flow provided to the
plunge pool flows over the falls and
provides well oxygenated habitat for
fish species. Bypassing flow around the
falls could result in reduced DO
concentrations in the plunge pool. To
remedy this, Okanogan PUD proposes to
locate the tailrace so that it discharges
into the plunge pool in a manner that
allows the flow to circulate to maintain
water quality (TDG and DO) for fish
holding in the pool. Okanogan PUD also
proposes to install turbine venting to
enhance DO levels in project discharges.
Our Analysis
When the tailrace is operational under
Okanogan PUD’s proposal, flow would
enter the pool approximately 90 feet
downstream from the falls at an angle
and create clockwise circulation in the
pool upstream of the tailrace exit.
Orienting the tailrace to discharge flow
into the plunge pool in this manner
would provide circulation within the
pool to prevent stagnation and water
quality degradation. The potential TDG
and DO effects of the tailrace discharge
are addressed in section 3.3.2.2, Water
Quantity and Quality, Environmental
Effects.
Water circulation in the plunge pool,
along with turbine venting, would
benefit all anadromous and resident
fishes found in the pool by ensuring
adequate DO levels, while reducing
TDG levels. These water quality
measures that reduce TDG, while
maintaining adequate DO (see section
3.3.2.2), would have the greatest
potential to benefit juvenile UCR
steelhead, as they are known to occupy
the plunge pool year-round. The
proposed tailrace location would
maintain the UCR steelhead designated
critical habitat and Chinook salmon
EFH below Similkameen Falls.
E:\FR\FM\17MYN2.SGM
17MYN2
28548
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
Side Channel Enhancement (FISH–10)
Low velocity, high complexity side
channels provide important habitat for
juvenile fishes. Elevated summer stream
temperature and limited rearing habitat
are the most significant limiting factors
for salmonids in the lower Similkameen
and Okanogan Rivers.30 The purpose of
the side channel enhancement measure
is to create cooler water, side channel
habitat in the lower river to benefit
anadromous fish, and mitigate any
impacts such as entrainment mortality
and any decreased production in the
Similkameen River.
Okanogan PUD proposes the sidechannel enhancement project in reach 1
(RM 0–4.7). The project would include
the enhancement of one to three side
channel areas in the Similkameen River
located downstream of Enloe dam. The
candidate side channel would be
approximately 800 feet in length with
an average gradient of 0.15 percent. The
channel(s) would be entrenched in the
floodplain; the cross section would be
approximately trapezoidal with some
undulation and woody debris in the
channel bottom. Riparian vegetation
would provide cover and shade over the
majority of the open channel(s). The
side-channel enhancement proposal
would provide cool water in these
candidate side channels that would
enhance habitat for juvenile fishes.
Cool water would be provided by a
well to sustain flow in the side channel.
The well is expected to be about 12
inches in diameter with a minimum
depth of 40 feet. Total depth would
depend upon site specific sub-surface
conditions. It is anticipated that a 25 to
30-horsepower pump would be
adequate to provide the desired flow
rate of 2 cfs. Based on water samples
from adjacent wells, the temperature of
water from the well is expected to be
near 14 °C. Constructed riffles would
contain buried manifold systems
capable of delivering 2-cfs low pressure
flow from the well.
The cool water pumped from the well
to the side channel(s) would discharge
water into a lateral channel of the
mainstem Similkameen River that is
disconnected from the main flow during
the summer low flow period. The cool
water discharged into the lateral
channel would extend downstream for
at least 200 to 300 feet. The water in this
side channel would be backwatered by
the mainstem flow, thus providing
additional ponding of cool water, and
the discharge into the channel would be
approximately 4 acre-feet per day (2
cfs).
30 See
31 As part of Washington DFW and Interior’s
recommended Fisheries Enhancement Plan.
license application.
VerDate Mar<15>2010
17:06 May 16, 2011
Most of the construction activity
would occur in a dry channel.
Sediment, erosion control, and water
quality protection would be
implemented using procedures outlined
in Washington DOE’s Stormwater
Management Manual for Eastern
Washington, as needed. BMPs would be
used to protect water quality and
prevent streambank erosion.
Postconstruction monitoring would be
conducted annually for the first 3 years
after side channel construction, then
every 5 years thereafter. Monitoring
would likely be accomplished through a
snorkel survey and the use of other fish
observation techniques for shallow
water, given that UCR steelhead are
listed as threatened and there is risk of
mortality or stress associated with
electrofishing or seining. Sampling
would occur in the low flow August to
mid-September time frame.
The river stage at which flow would
begin to naturally enter the upper end
of the side channel and the relationship
between river flow and side channel
flow above this threshold value has not
been determined. This information
would be collected during a second
planning and evaluation phase and
would determine the timing of start-up
and duration of well operation. It would
also provide insight regarding the need
to protect the side channel from flood
flow; because the river gradient is flat,
flood stage may backwater the
downstream end of the side channel
preventing higher water velocity from
developing. If a downstream backwater
is present, large floods would maintain
natural processes within the side
channel without destroying the
investment in rearing habitat.
Washington DFW, Interior,31 and
NMFS recommend the proposed sidechannel enhancement project. NMFS
also recommends development of a fish
habitat enhancement plan in
consultation with NMFS, FWS,
Washington DFW, the Colville, and the
Yakama Nation. This recommended
plan would consist of provisions for
side channel enhancement, as well as
Okanogan’s proposed gravel
supplementation plan (FISH–11) which
is discussed below. NMFS recommends
the final plan be filed with NMFS at
least 180 days prior to the start of any
land-clearing activities and include a
schedule for completion in 3 years,
performance criteria, monitoring
provisions, contingency plans, and
provisions for periodic review of the
plans.
Jkt 223001
PO 00000
Frm 00044
Fmt 4701
Sfmt 4703
Our Analysis
The effect of the side channel
improvements is not expected to have a
significant effect on water temperatures
in the Similkameen River. The side
channel improvement would include
the development of a small area (∼1,000
square feet) of cool water at the
confluence of the side channel and the
mainstem river. It is expected that the
outflow of 2 cfs (4 acre feet/day) of cool
water from the side channel would
maintain cool water habitat in the
lateral channel. Lower temperatures
would also be expected in the mainstem
Similkameen River where the lateral
channel connects to the river; however
the downstream extent of the cool water
influence is unknown at this time, but
expected to be 200 to 500 feet.
The purpose of the proposed side
channel enhancement is to provide
coolwater rearing habitat for juvenile
salmonids during the summer to
decrease mortality, improve fish
condition, and mitigate the loss of
fisheries resources that could occur as a
result of the construction and operation
of the project. The proposed side
channel and lateral channel
enhancements would benefit juvenile
UCR steelhead/rainbow trout, Chinook
salmon, and sockeye salmon in the
lower river during the low flow summer
months by providing thermal refugia.
Cutthroat trout and brook trout are also
present in very low densities and could
benefit. The proposed side channel
habitat would be best suited to age 0+
steelhead/rainbow trout, and to a lesser
degree age 1+ steelhead/rainbow trout.
The relatively shallow water depths in
the side channel would likely preclude
significant occupancy by older age
cohorts of trout and salmon. Monitoring
the side channel via snorkel surveys
after construction would determine if
the newly created habitat was being
utilized by the target species.
Installation of the structures, channel
excavation, and other instream work
related to the proposed side-channel
enhancement project could cause shortterm turbidity plumes and
sedimentation when water is turned
back into the dry channel following
construction. In-water construction to
connect the side channel with the river
may cause mortality of eggs, fry, and
juvenile fish due to crushing or abrasion
during construction. It would be
beneficial for Okanogan PUD to consult
with NMFS, FWS, Washington DFW,
the Colville, and the Yakama Nation,
and file the side-channel enhancement
plan with the Commission, as well as
providing copies to the agencies, at least
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
180 days prior to implementation, as
recommended by NMFS.
Spawning Gravel Enhancement
(FISH–11)
The Similkameen River is a gravelpoor system and Enloe dam prevents the
transport of gravel from the upper
watershed, which results in limited
spawning habitat for Chinook salmon,
sockeye salmon, and UCR steelhead in
the lower 5 miles of the Similkameen
River. Spawning salmonids use gravel
deposits near and downstream of RM 4,
and limited spawning occurs along the
left riverbank (looking upstream) near
RM 5.2. Okanogan PUD proposes a
gravel supplementation program in
reach 1 (RM 0–4.7). Okanogan PUD
would supplement up to a maximum of
15,000 cubic yards of 1- to 3-inch
diameter gravel on a schedule of 3,000
cubic yards 5 times at 5-year intervals.
Each 3,000-cubic yards of gravel
deposited would have the potential of
providing approximately 2 acres of
additional spawning area.
The preferred site for introduction of
the gravel at RM 5.8 is near an
abandoned orchard that would not
require any site grading to create a pad
for the conveyor belt and truck turnaround, and has a low river bank (12
feet high), which would allow a shorter
conveyance system to reach the active
channel of the river. The ground cover
in this location is predominately riprap
with a small number of willow shrubs
and small cottonwoods growing in the
riprap. Approximately eight willow
shrubs on the riverbank would be cut
back and allowed to resprout following
the first supplementation.
The gravel would be placed adjacent
to or in the wetted channel where it
could be naturally redistributed at high
flows. To reduce disturbance of the
riverbanks and associated riparian
habitat, a rock conveyor would be used
to transport the gravel from an upland
staging area to the river channel. The inchannel gravel pile is anticipated to be
about 30 feet tall, 40 to 50 feet wide, and
150 feet long, and would extend 35 to
40 feet into the wetted channel.
Gravel supplementation is
recommended by Interior, NMFS, and
Washington DFW.32 The Colville
comments that the proposed gravel
supplementation program would
reinitiate gravel recruitment processes
that have been disrupted by the
presence of Enloe dam; would greatly
increase the quality and quantity of
spawning habitat in the lower
Similkameen River, and would have
32 As part of Interior’s Resident Fish Habitat
Management Plan.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
minimal impacts on existing habitat.
The Colville also comments that the
benefits of the proposed activities
would vastly outweigh any incidental
impacts.
Our Analysis
Enloe reservoir would continue to
interrupt gravel transport from upstream
sources after the proposed project is
constructed. The proposed gravel
supplementation program would
provide long-term benefits for spawning
Chinook salmon and UCR steelhead/
rainbow trout in the lower river as the
gravel is redistributed. The proposed
3,000 cubic yards of gravel, however,
may need to be distributed over more
than one river location to allow efficient
distribution under normal flow
conditions and prevent unwanted
channel alteration.
Deposition of the gravel into the
wetted channel would likely cause
short-term turbidity plumes,
sedimentation, and mortality of juvenile
fish due to crushing or abrasion. It
would be beneficial for Okanogan PUD
to consult with NMFS, FWS,
Washington DFW, the Colville, and the
Yakama Nation to develop and file a
gravel enhancement plan with the
Commission, as well as providing
copies to the agencies, at least 180 days
prior to implementation, as
recommended by NMFS.
Biological Review and Fisheries
Monitoring Database (FISH–12 and
FISH–13)
Okanogan PUD proposes a TRG to
monitor the success of proposed
mitigation and enhancement measures.
The TRG would: (1) Consult in the
design of management and monitoring
plans; (2) review and evaluate data; and
(3) develop resource management
proposals or other recommendations to
further improve the measures, if
appropriate. The group’s meetings
would be open to the public, and
Okanogan PUD would maintain records
of the meetings and any
recommendations made. Data and
information from the monitoring
programs would be used to examine
long-term trends and make decisions
regarding adapting measures to further
protect aquatic resources. As part of the
biological review process, Okanogan
PUD would develop a central database
for organization and storage of the
monitoring data related to aquatic
resources. Database format and
development would be consistent with
other aquatic data gathered in the
Okanogan River Basin. The monitoring
programs that would be included in the
biological review process are:
PO 00000
Frm 00045
Fmt 4701
Sfmt 4703
28549
• An entrainment study, including
reservoir sampling;
• Tailrace barrier monitoring;
• Monitoring the use of boulder
clusters upstream of the reservoir; and
• A side-channel habitat monitoring
program.
Washington DFW recommends that
Okanogan PUD develop an adaptive
management plan within 1 year of
license issuance that includes goals,
monitoring protocols, decision criteria,
and actions to be completed in response
to monitoring results.
Interior recommends development of
a Resident Fish Habitat Management
Plan within 1 year of license issuance
that includes a comprehensive study of
resident fish species, populations,
numbers, and habitat conditions in the
river from Nighthawk down to the
reservoir to complement the studies
already completed in the reservoir and
downstream of the dam, and
development of a fish habitat
monitoring plan for the river upstream
of the reservoir. The plan also includes
provisions for temperature monitoring,
riparian plantings in the reservoir, the
stocking of triploid rainbow trout in the
reservoir, and a fish habitat monitoring
plan.
Our Analysis
Development and implementation of
the fish monitoring database and study
plans; interpretation of monitoring
results; and development of adaptive
management strategies based on
monitoring results would best be
accomplished through consultation
among the proposed TRG and Okanogan
PUD to ensure integration between
license measures and other resource
management plans, such as regional
salmon recovery efforts. Creation of a
TRG and a database with the results of
the proposed monitoring programs
would allow Okanogan PUD to manage
project related mitigation and
enhancement measures, to determine
the success of these measures, and to
modify these measures, if appropriate,
to improve their effectiveness. This TRG
and its functions would satisfy the
Washington DFW recommendation for
an adaptive management program.
Interior’s recommendation for a
Resident Fish Habitat Management Plan
upstream of the project contains
recommendations that are not directly
related to project operations or effects,
and thus do not have a direct nexus to
the project. These recommendations
include a comprehensive study of
resident fish species, populations,
numbers, and habitat conditions in the
river from Nighthawk down to the
reservoir; and development of a fish
E:\FR\FM\17MYN2.SGM
17MYN2
28550
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
habitat monitoring plan for the river
upstream of the reservoir The proposed
run-of-river operation of the reservoir
would likely have no effect on reservoir
species, and would have little effect on
the riverine habitat upstream of the
reservoir. Some of the recommended
provisions including temperature
monitoring and riparian monitoring are
duplicative of Okanogan PUD proposals
discussed elsewhere in the document.
The recommendation for stocking
triploid rainbow trout has also been
recommended by other agencies and is
discussed in detail previously in this
section.
Minimum Flow Proposal
As we’ve said, Okanogan PUD
proposes continuous minimum flows
for the 370-foot-long bypassed reach.
Proposed minimum flows would be 30
cfs from mid-July to mid-September,
and 10 cfs the rest of the year.
Okanogan PUD also proposes to
evaluate critical flow thresholds for
bypassed reach downramping
requirements that may be implemented
during emergency situations after
observation of in situ conditions during
provision of minimum flows.
American Rivers et al. recommend a
minimum flow release to the bypassed
reach equal to the requirements of
Washington state law, to prevent
degradation of existing instream water
uses (WAC 173–201A–310). These
releases would vary from 400 cfs to
3,400 cfs depending on the month.
CRITFC recommends maintenance of
minimum flows in the bypassed reach
to provide biotic production and protect
designated critical habitat in the reach.
Washington DFW also recommends
establishment of instream flows in
consultation with Okanogan PUD as a
condition for licensing and operation of
the project, to protect fish in the
bypassed reach and in the plunge pool
below the falls. Neither CRITFC nor
Washington DFW recommendations
contained specific volumes for their
recommended flow releases. In their
preliminary recommendations,
Washington DFW notes that new
information is likely to be developed
during the Washington DOE WQC
process, and because fish and wildlife
resources are greatly affected by water
quantity and quality, Washington DFW
will not be able to finalize its
recommendations until the certification
process is completed.
Our Analysis
Proposed flow diversions for project
operations would cause flow in the 370foot-long bypassed reach to be reduced
by up to 1,600 cfs when the powerhouse
is in operation. When river flow is
greater than 1,600 cfs, the amount of
water provided to the bypassed reach
would be any flow in excess of 1,600
cfs. When river flow is less than 1,600
cfs and both generating units are
operational, the only flow provided into
the bypassed reach would be either 10
or 30 cfs depending on the time of year.
Table 14 shows mean flows in the
bypassed reach under current
conditions and under Okanogan PUD’s
minimum flow proposal. As shown in
Table 14, under Okanogan PUD’s
proposal, flows in the bypassed reach
would be greatly reduced for much of
the year. The large majority of the
wetted area in the 370-foot reach would
be dewatered and the majority of
aquatic habitat in this reach would be
lost. While this reduction of flow in the
bypassed reach may seem extreme, the
aquatic habitat in this reach is not
heavily utilized and is not accessible to
most fish in the project area.
Similkameen Falls at the downstream
end of the bypassed reach is a natural
barrier to upstream fish passage;
therefore, the only fish that could
occupy the bypassed reach are
individuals from resident populations
above Enloe dam that pass over the
spillway. Washington DFW states that
rainbow trout could be washed over the
dam into the bypassed reach and could
contribute to the rainbow trout/UCR
steelhead population in the river below
the dam if sufficient flow and depth is
maintained to avoid injury. Rainbow
trout have not been found in the
reservoir above the dam in previous
sampling (Table 9), but in recent
(September 2010) snorkeling and hook
and line surveys in the plunge pool and
bypassed reach immediately
downstream of Enloe dam, rainbow
trout were observed. Smallmouth bass,
northern pikeminnow, sculpin, and
unidentified suckers were also observed
or collected.33 Flow conditions did not
allow a complete survey of the plunge
pool, so additional fish may have been
observed if a complete survey had been
conducted.
Based on the recent survey, several
species of fish are able to utilize the
habitat in the plunge pool at least
during lower-flow periods (river flow
during the survey was about 600 cfs).
Under Okanogan PUD’s proposed
minimum flows, most of the habitat in
the plunge pool would disappear except
during the summer months when
natural flows are higher than 1,600 cfs.
This would be the same timeframe
when we would expect that fish would
be washed over Enloe dam due to high
flows. Therefore, the plunge pool
habitat would be available during high
flow months when resident fish may
need it to survive when they are washed
over Enloe dam. The plunge pool
habitat would then largely disappear
from August to March annually, as it
would only contain minimum flows of
10 or 30 cfs. This would probably be of
little consequence to resident fish
populations, as no fish would be
washed over Enloe dam during this
timeframe. The survival chances of fish
who would be occupying the plunge
pool when it was dewatered annually
are not known; however, recent surveys
have shown that their numbers are quite
small. Regardless of the numbers of fish
in the plunge pool after high flow
events, those fish would benefit from
the minimum flows proposed by
Okanogan PUD.
TABLE 14—COMPARISON OF AVERAGE MONTHLY FLOWS IN BYPASSED REACH WITH OKANOGAN PUD’S PROPOSED
MINIMUM FLOW REGIME
[Source: Staff]
Mean flows in
bypassed
reach under
current
conditions
(cfs) 1
sroberts on DSK69SOYB1PROD with NOTICES
Month
January ....................................................................................................................................................................
February ...................................................................................................................................................................
33 Data were included in Okanogan PUD’s
November 10, 2010 filing.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00046
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
Mean flows in
bypassed
reach under
minimum flow
proposal (cfs)
659
682
10
10
28551
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
TABLE 14—COMPARISON OF AVERAGE MONTHLY FLOWS IN BYPASSED REACH WITH OKANOGAN PUD’S PROPOSED
MINIMUM FLOW REGIME—Continued
[Source: Staff]
Mean flows in
bypassed
reach under
current
conditions
(cfs) 1
Month
March .......................................................................................................................................................................
April ..........................................................................................................................................................................
May ..........................................................................................................................................................................
June .........................................................................................................................................................................
July ...........................................................................................................................................................................
August ......................................................................................................................................................................
September ...............................................................................................................................................................
October ....................................................................................................................................................................
November ................................................................................................................................................................
December ................................................................................................................................................................
sroberts on DSK69SOYB1PROD with NOTICES
1 Data
Mean flows in
bypassed
reach under
minimum flow
proposal (cfs)
746
2,086
2,086
8,597
2,965
916
596
697
938
798
10
486
486
6,997
1,365
30
30
10
10
10
from USGS Nighthawk gage no. 12442500 (1929–2005).
Any fishes that would be occupying
the plunge pool could be negatively
affected by the reduction in minimum
flow provision in the case of emergency
operations, such as project shutdown.
Okanogan PUD’s proposal to determine
appropriate downramping rates through
monitoring and field observation would
allow them to decide upon an
appropriate downramping rate that
would be utilized during these
situations. This would be protective of
any fishes utilizing the plunge pool.
The minimum flow now proposed by
Okanogan PUD and agreed to by
Washington DOE and Washington DFW
would be only a small fraction of the
flow recommended by American Rivers
et al. (400 to 3,400 cfs). Although
American Rivers et al. states that their
recommended flow is based on
Washington regulations to ensure that
state water quality standards are met,
neither of the Washington agencies has
recommended this flow, nor has
American Rivers et al. provided a
technical justification, based on site
specific data, for the higher flows that
it recommends. American Rivers et al.
only states that its recommended flow
would provide adequate depth,
substrate, cover and velocity, and does
not provide any analysis of alternative
flows.
Another issue associated with
minimum flows in the bypassed reach is
the design of the minimum flow release
structure, which we previously
discussed in section 3.2.2.2. We
concluded that a flow release structure
consisting of a gate and pipe using one
of the former penstock intakes would be
the best option, because it would
minimize any potential water
temperature increases, would allow
placement of the flow discharge at a
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
point below the dam that would provide
the greatest environmental benefit, and
would provide the best control of the
flows to be released. For the flow
discharge point, a point closest to the
center of the dam would likely be best,
to ensure good flow circulation to most
of the pool area. We also concluded that
the final design of this structure should
be developed in consultation with the
resource agencies (Washington DOE,
Washington DFW, FWS, NMFS, BLM,
and the Colville), prior to filing the
design with the Commission for
approval.
3.3.3.3
Cumulative Effects
We consider the geographic scope of
cumulative effects on aquatic resources
to be the Similkameen River basin. Nonpower development and other activities
contributing to cumulative effects on
water quality include historic and
present land use as described in section
3.3.2.3. Hydropower development at the
Similkameen Falls began in the early
1900s with Enloe Dam being
constructed in 1920. The powerhouse
operated until 1958, when it was
decommissioned and the flashboards
removed from the dam. The proposed
Enloe Project would replace the
flashboards with crest gates, increasing
the normal operating level of the
reservoir by 4 feet, equal to its original
operating level.
Cumulative effects on aquatic
resources would occur on both resident
and anadromous species in the
Similkameen and Okanogan rivers, with
potential effects on anadromous species
extending to the Columbia River. For
resident species, primary effects would
be associated with construction-related
effects downstream of Similkameen
Falls (increased sedimentation and
PO 00000
Frm 00047
Fmt 4701
Sfmt 4703
turbidity), and downstream passage
through the turbines. The Similkameen
River already experiences degraded
water quality conditions associated with
past mining activities, and high water
temperatures during the summer
months. Construction-related effects
could add additional stress to both
resident and anadromous species
downstream of the falls, although
Okanogan PUD has proposed measures
to reduce construction-related effects, as
described above. These effects would
also be of relatively short duration,
would subside after completion of
construction, and overall would not
contribute significantly to cumulative
effects on the fishery resources of the
basin.
Fish entrainment through the turbines
would result in the mortality of some
resident species that attempt to move
downstream past Enloe dam, and could
have some effect on resident
populations in the lower Similkameen
River, if those populations rely on
recruitment from upstream river reaches
to maintain their populations. Okanogan
PUD’s proposed intake design would
include narrow-spaced trashracks that
would act to exclude larger fishes from
passing through the turbines, but would
allow smaller individuals to pass. These
smaller individuals, however, would
have higher survival rates than larger
fish, and any mortality may not
significantly affect the downstream
population. Smaller/younger cohorts of
fish populations typically have higher
natural mortality than older cohorts, so
any turbine-related mortality may not be
detectable in the downstream
population. Okanogan PUD is also
proposing to monitor fish entrainment
at the project, to determine the
effectiveness of the proposed intake
E:\FR\FM\17MYN2.SGM
17MYN2
28552
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
design, so overall, any turbine-related
mortality would not contribute
significantly to cumulative effects on
the resident fishery resources of the
basin.
Anadromous species occurring in the
Similkameen River immediately
downstream of the project include the
UCR steelhead (listed species), Chinook
salmon, and sockeye salmon. These
species enter the Columbia River from
the Pacific Ocean and migrate over nine
downstream hydropower dams on the
Columbia River, before reaching the
Okanogan River and tributary
Similkameen River. These species use
the plunge pool at the base of
Similkameen Falls as summer holding
habitat prior to spawning, but the falls
blocks any further upstream migration.
Spawning for these species occurs in the
lower Similkameen River or in the
Okanogan River. The proposed tailrace
would discharge into the plunge pool,
but should have no negative effect on
the holding habitat in the pool, and
would result in water quality
improvements associated with the
reduction in TDG, and the maintenance
of adequate DO levels as a result of air
injection in the turbine draft tubes. The
turbine draft tubes would also be
equipped with barrier nets to prevent
adult steelhead from swimming into the
draft tubes and contacting the turbine
blades. The project would operate in a
run-of-river mode and would implement
specific ramping rates when operations
are changed, so proposed project
operations would not result in excessive
water level fluctuation in the lower
Similkameen River. Other
enhancements proposed by Okanogan
PUD include construction of enhanced
side channel habitat for juvenile
salmonids, and spawning gravel
supplementation in the lower river. In
all, proposed project operations and
enhancement measures would result in
a positive cumulative effect on the
anadromous salmonids occurring in the
Similkameen River. Any beneficial
effects on Similkameen River salmonids
resulting in increased production could
also be observed in the Okanogan and
Columbia Rivers, as any increased
production could result in increased
adult returns to those rivers.
3.3.4
sroberts on DSK69SOYB1PROD with NOTICES
3.3.4.1
Terrestrial Resources
Affected Environment
Vegetation
The Enloe Project area is located in
the Similkameen River Valley, within
the Okanogan Highlands Province
(Franklin and Dyrness, 1973). This
valley is a transitional zone between the
Cascade Mountains to the west and the
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
Okanogan Highlands to the east.
Columbia Basin steppe vegetation
reaches its northernmost extension in
this valley. Vegetation is a complex
mosaic of three steppe vegetation units,
including the big sagebrush/bluebunch
wheatgrass association, the bitterbrush/
Idaho fescue community, and the
threetip sagebrush/Idaho fescue
community. Soil, slope, aspect,
topography, and grazing practices
influence the distribution of these
communities within the valley.
Previous botanical studies conducted
in the vicinity of the project include a
vegetation mapping study conducted
along the Similkameen River in 1984 by
FWS for the Corps and vegetation
studies conducted for the 1991 license
application by the Okanogan PUD.
Additional vegetation and habitat
mapping and riparian vegetation studies
were conducted by Okanogan PUD in
2006. The 2006 studies were completed
in consultation with state and federal
agencies responsible for the
management of terrestrial biological
resources of the Similkameen River.
Five major vegetation communities
were identified within the project area:
Shrub-steppe; upland meadow; riparian
forest; riparian shrub; and herbaceous
wetland. Other minor communities
included areas of rock, unconsolidated
shore, developed land and open water.
The shrub-steppe community
primarily occurs throughout the project
area on hillsides above the dam along
the eastern side of the reservoir. Smaller
communities are located immediately
downstream of the dam along both sides
of the Similkameen River. It is the most
extensive community, covering
approximately 27 acres. Native shrubsteppe communities have been
diminished in both extent and condition
as a result of overgrazing by livestock,
invasion of non-native plants,
agricultural conversion, and wildfire
suppression. Most extant shrub-steppe
may appear to be in a natural condition,
but it is actually a considerably altered
ecosystem, compositionally and
functionally different than pre-European
settlement conditions (Altman and
Holmes, 2000).
Dominant species in this community
include big sagebrush, threetip
sagebrush, bitterbrush, grey rabbitbrush,
bluebunch wheatgrass, and Idaho
fescue. Other common grass and forb
species include Sandberg’s bluegrass,
cheatgrass, arrowleaf balsamroot, and
prickly pear. Within the shrub-steppe
community, the bitterbrush/Idaho
fescue community is found on steeper
slopes with coarse soils, while the big
sagebrush/bluebunch wheatgrass is
found on gentler slopes. Invasive exotic
PO 00000
Frm 00048
Fmt 4701
Sfmt 4703
species, including knapweeds, thistles,
and tumble mustard, are also common,
particularly in disturbed sites.
A deciduous component of the shrubsteppe community occurs in draws and
the steepest slopes of the hillsides on
both sides of the river. Common shrub
species in these areas are smooth sumac,
serviceberry, and Wood’s rose. Rocky
Mountain maple occurs in some stands
of this community. Scattered ponderosa
pine trees occur within the shrub-steppe
community, particularly with the
deciduous component.
The upland meadow community
occurs where shrub-steppe vegetation
has been cleared and replaced by
grasses and forbs. Cheatgrass usually
dominates in these areas. Common grass
and forb species include Idaho fescue,
knapweeds, and tumble mustard. This
community occupies approximately 4.3
acres of the project area and occurs
primarily at two locations. Both of these
locations are old homestead sites, with
the larger situated near Enloe dam on
the east bank of the river. These areas
are also used for grazing livestock.
Riparian forest in the project area
consists of stands of woody vegetation
from 12 to 80 feet tall. This community
occupies approximately 2.9 acres in the
project area and is found primarily
along the reservoir. The largest stand is
on the east bank of the river at Enloe
dam. The dominant tree in this
community is black cottonwood, but
quaking aspen and water birch
contribute to overstory canopy in some
areas. Common understory trees and
shrubs include willow, red-osier
dogwood, chokecherry, black hawthorn,
Rocky Mountain maple, and mountain
alder. Common herbaceous species
include clematis, rushes, sedges, and
horsetail. Introduced species such as
maple, juniper, yucca, and lilac are
found at the former homestead site near
Enloe dam.
Stands of riparian forest on the east
side of the river burned in 1991. Many
of the larger black cottonwoods are at
least partly dead, although resprouting
is occurring. These stands are important
as they provide crucial habitat,
especially to species that are not well
adapted to living in the arid grasslands
and forests that dominate this part of the
region. Cottonwoods grow quickly and
die relatively young. They often provide
cavities and snags, which are important
to a variety of wildlife species. These
snags may eventually fall into the
stream, where they help create cover
and pool habitat for fish and other
aquatic creatures. In this capacity, fallen
or dead trees help to stabilize stream
banks and prevent erosion and siltation
of streambeds.
E:\FR\FM\17MYN2.SGM
17MYN2
sroberts on DSK69SOYB1PROD with NOTICES
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
The riparian shrub community
consists of woody vegetation that is less
than 12 feet tall. This community
occupies approximately 7.4 acres in the
project area and is found primarily
along the east bank of the reservoir
where the slope is gentle. It also occurs
as a narrow fringe elsewhere along the
reservoir and the Similkameen River,
including the proposed side-channel
enhancement site about 5 miles
downstream from Enloe dam. Willow
stands, varying in size from bands of
seedlings or small shrubs to large dense
thickets, provide over 75 percent of the
total shrub canopy cover. The dominant
willow species are Bebb willow and
yellow willow. Other species in this
community include red-osier dogwood,
chokecherry, clematis, smooth sumac,
and young black cottonwoods.
The herbaceous wetland community
is found on wet or seasonally flooded
areas. This community occupies
approximately 3.5 acres in the project
area and occurs in scattered patches on
low-elevation terraces immediately
adjacent to the reservoir. Dominant
species are perennial grasses, including
reed canary grass and bluegrass. Other
species include cattail, horsetail,
milkweed, and knapweed. Woody
species found in these areas include
Wood’s rose, red-osier dogwood, black
hawthorn, and willow, but they provide
less than 5 percent of the cover in this
community.
Several types of unvegetated areas are
found in small portions of the project
area. These areas include rock outcrops
along the hillside slopes, bare soil, and
sand and gravel bars (unconsolidated
shore) along the reservoir shoreline.
Unconsolidated shore areas were
mapped as 5.0 acres in the project area.
An unconsolidated sand and gravel bar
area exists at the outfall of the proposed
side-channel enhancement location
where it connects to the mainstem
Similkameen River. Some sandbars
support a sparse herbaceous cover and
overlap with the herbaceous meadow
community. The open water of the
reservoir and the Similkameen River
downstream of Enloe dam occupy much
of the project area (76.8 acres and 4.2
acres, respectively).
Developed areas exist within the
project area. These areas include the
dam itself, the old powerhouse, and
various roads. These areas are also
unvegetated and represent 0.5 acre in
the project area.
Noxious Weeds
Noxious weeds and other exotic and
invasive plant species are defined as
those plants listed by the Washington
State Noxious Weed Control Board
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
under Washington Administrative Code
16–750 and adopted by local county
boards. They are classified as A-, B-, or
C-rated plants according to their current
distribution and degree of threat, with
A-rated being of highest concern.
Weed species have already infested
the Enloe dam area and are currently
targeted for eradication/reduction.
These include three Class B weeds
(houndstongue, diffuse knapweed, and
sulfur cinquefoil), as well as one Class
C weed (babysbreath).
Other weeds, such as thistles and
tumble mustard, are common in the
shrub-steppe and upland meadow
communities, particularly along
roadsides and disturbed sites. Invasive
and noxious plants do not appear to be
spreading into forested lands or other
less-disturbed habitats.
Sensitive Species
In July 2006, Okanogan PUD
conducted floristic surveys for sensitive
species on all undeveloped land
comprising the Enloe dam project area.
The entire project area from the
upstream end above Shanker’s Bend to
the downstream end below the existing
powerhouse was surveyed. In most
areas, the project boundary does not
extend much above the ordinary high
water line. Okanogan PUD conducted
additional vegetation surveys along the
proposed new access road in 2007 and
the proposed side channel enhancement
site in 2009.
Habitat for two sensitive plant
species, Ute ladies’-tresses, which is
state-listed as endangered and federally
listed as threatened (see section 3.3.5,
Threatened and Endangered Species),
and Snake River cryptantha, which is
state-listed as sensitive, occurs in the
project area. No sensitive plants were
observed.
Wildlife
The Okanogan Basin and
Similkameen Subbasin are important
ecological corridors for migratory
megafauna. Species such as mule deer
use the north-south corridor that
connects the dry landscapes of Canada’s
interior with the grasslands to the south.
In addition to megafauna, this corridor
is a crucial part of the flight path for
many species of birds during annual
migrations in the Pacific Flyway
between summer and winter ranges.
The Enloe Project vicinity supports a
variety of waterfowl, aquatic furbearers,
and amphibians. Prominent among the
waterfowl are mallards, common
mergansers, and greater and lesser
scaup. Canada geese are resident in the
project vicinity and small numbers may
nest along the water in the project area.
PO 00000
Frm 00049
Fmt 4701
Sfmt 4703
28553
Beaver is the most prevalent aquatic
furbearer, feeding primarily on willow
found in the riparian shrub and tree
habitats bordering the reservoir.
Amphibian observations are infrequent
in the project area due to limited habitat
suitability. Amphibian species that may
be present in the project vicinity
include Pacific tree frog, Columbia
spotted frog, western toad, long-toed
salamander, tiger salamander, and
spadefoot toad. No amphibians were
observed during reconnaissance surveys
carried out in August 2006.
Riparian habitat, generally recognized
as having a high diversity of wildlife
species, supports a number of song birds
best represented by the western
flycatcher, eastern king bird, American
robin, Bullock’s oriole, cedar waxwing,
and various species of warblers,
sparrows, and woodpeckers. The upland
area contains habitats dominated by
sagebrush, bitterbrush, serviceberry, and
rock outcrops, which support mule
deer, yellow-bellied marmot, blackbilled magpie, and ground-nesting
species such as the introduced chukar
partridge and the native California
quail. Reptiles are also common in these
habitats including western rattlesnakes,
racers, and gopher snakes.
Wildlife species that use a wider
variety of habitat types in the project
area include swallows, vultures, raptors,
and coyotes. Common swallow species
in the project vicinity are barn
swallows, bank swallows, and violetgreen swallows. Vultures and raptors
are primarily represented by turkey
vultures. American kestrels, red-tailed
hawks, sharp-shinned hawks, golden
eagles, and bald eagles are also present
but in smaller numbers. Except for
swallows, these species may occur in
the project year-round. Swallows only
occur in the summer months.
Project area use by most of these
species, as well as other less common
species, is greatest in the spring and
summer and lowest in the winter, when
many species migrate, move upslope
away from the river, or hibernate.
Prominent exceptions are mule deer and
bald eagles, which winter in the project
area and remain active in this season.
Sensitive Species
Townsend’s big-eared bat, which is a
federal species of concern and a
candidate for the State of Washington’s
threatened and endangered species list,
uses irrigation tunnels adjacent to the
proposed access roads immediately
adjacent to or inside the proposed
project boundary as night roosts. During
BLM surveys conducted in 2000 in the
Enloe dam area, one male Townsend’s
bat was observed. Washington DFW
E:\FR\FM\17MYN2.SGM
17MYN2
28554
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
states that the abandoned powerhouse
and penstocks on the west side of the
river (figure 1) may provide suitable
habitat for this species.
State-listed wildlife species that may
occur within the project area include
the state threatened bald eagle, state
endangered sage grouse, and state
endangered Northern leopard frog. The
bald eagle was removed from the federal
threatened and endangered species list,
effective August 8, 2007 (72 FR 37,346
[July 9, 2007]); thus, it is not subject to
ESA protection. The Bald and Golden
Eagle Protection Act is now the primary
federal law protecting the species. This
eagle is still state-listed as threatened in
Washington, although it has been
recommended for down listing to
sensitive by Washington DFW.
Bald eagles occur along the
Similkameen River during most of the
year, but they are most abundant from
approximately October to April. Very
small numbers may occur during
summer, but no nests have been located
along the river, below Palmer Lake,
since 1989. It appears that most bald
eagles observed in the Enloe Project area
are recorded as they cross the area and
fly up- or downriver. When present,
eagles range widely within the area
depending on water conditions, prey
availability, perch site locations, and
human disturbance. Consequently,
although bald eagles may be observed in
the Enloe Project area throughout much
of the year, they neither nest nor appear
to have communal roosts there.
The project area is within the
historical range of the state-listed sage
grouse, but the nearest existing
population of this species is more than
60 miles to the south.
Potential habitat may be present
within the project vicinity for the statelisted Northern leopard frog. The
species typically occupies waterbodies
situated in grassland, scrubland, or
forests. Although most historical
occurrences of this species were in the
shrub-steppe community, the project
area is well outside the current range of
the species. Additionally, Washington
DFW states that the Northern leopard
frog has not been found in Okanogan
County for many years and may be
extirpated (ENTRIX, 2009).
3.3.4.2 Environmental Effects
Activities that would be authorized
under a license that could affect
terrestrial species and habitats include:
effects of proposed project actions on
wetlands, riparian and littoral habitats;
disturbance of vegetation, wildlife, and
their respective habitats resulting from
construction, road grading, and grounds
maintenance; effects of water elevation
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
changes on riparian and wetland
vegetation; grazing access; introduction
and spread of noxious weeds; and
effects of proposed project actions on
wildlife species. As discussed below,
Okanogan PUD proposes measures to
reduce adverse effects on terrestrial
resources.
Effects of Construction, Operation, and
Maintenance of Project Facilities on
Wetlands, Riparian and Littoral
Habitats (BOTA–01 Through BOTA–09)
Okanogan PUD proposes to mitigate
the modification of existing riparian and
wetland vegetation by facilitating the
rapid development of riparian
vegetation to replace any losses when
the low-flow elevation for the reservoir
is increased by 4 feet. This would be
accomplished through the
implementation of its Vegetation Plan,
included in the additional information
filed on March 2, 2009.
The overall objectives of the
Vegetation Plan are to ensure that
Okanogan PUD’s proposed measures
and agency recommendations are
successfully planned and executed. The
Vegetation Plan would establish the
following measures:
• Planting riparian vegetation at
previously identified sites along the
west and east banks of the reservoir to
mitigate for the temporary loss of habitat
while fringe riparian vegetation
establishes along the new low water
line;
• Abandoning and restoring the
existing unimproved shoreline road
along Enloe reservoir to mitigate the
effects of project construction noise and
habitat fragmentation;
• Planting riparian vegetation along
the corridor to mitigate the effects of the
abandoned shoreline road;
• Planting riparian species on east
and west banks downstream from
Shanker’s Bend;
• Installing grazing control measures,
including fencing, to protect riparian
plantings and other sensitive areas from
cattle grazing;
• Monitoring restored areas and
replanting if necessary in accordance
with the performance criteria in the
Vegetation Plan; and
• Employing BMPs to protect riparian
and wetland vegetation to reduce or
avoid effects associated with
construction activities.
Okanogan PUD’s Vegetation Plan
would provide for appropriate
protective measures, if monitoring
results show project-related effects, and
also would include employee training
and monitoring to determine whether
the measures are effective. The
Vegetation Plan would provide for
PO 00000
Frm 00050
Fmt 4701
Sfmt 4703
adaptive management, based on
monitoring results and would outline
consultation with the agencies and
provision of annual reports on plan
activities, with the opportunity to
update the plan, as needed. Okanogan
PUD’s proposed BMPs for resource
protection, cutting and planting
methods for riparian trees and grasses,
grazing controls, noxious weed
maintenance, vegetation monitoring,
and training would be included as part
of the plan to ensure that riparian areas
are developed and become more
valuable areas for wildlife.
Okanogan PUD prepared the
Vegetation Plan after consultation with
FWS, BLM, and Washington DFW to
address the measures that would be
taken to facilitate the development and
protection of riparian vegetation that is
otherwise expected to occur naturally.
As such, Okanogan PUD’s Vegetation
Plan would incorporate all the measures
that BLM and Washington DFW
recommend, except a BLM
recommendation for additional sensitive
plant species surveying above and
below the dam.
FWS, BLM, and Washington DFW
recommend that Okanogan PUD prepare
a vegetation resources management plan
that would include the measures
contained in the Vegetation Plan, but
would also include measures
specifically addressing the restoration of
riparian habitat lost, degraded, or
disturbed by project construction,
operation, and maintenance using a 3:1
ratio. Okanogan PUD replied that its
Vegetation Plan would provide the
appropriate replacement ratio with a net
increase in riparian habitat over what
currently exists.
BLM, FWS, and Washington DFW
further recommend that Okanogan PUD
monitor restored areas (upland sites,
riparian and wetland sites) every year
for 5 years and continue monitoring
every 5 years thereafter and replant sites
as necessary. Okanogan PUD’s
Vegetation Plan includes provisions for
monitoring of restored areas of sites that
may convert from upland meadow to
herbaceous wetland.
Our Analysis
Development and implementation of
Okanogan PUD’s environmental
measures contained in its Vegetation
Plan for shoreline vegetation would
mitigate or reduce the effects of project
construction, operation, and
maintenance on associated wetlands
and riparian habitats and would provide
a benefit to wildlife species that use the
riparian habitats within the project area.
Overall, implementation of Okanogan
PUD’s Vegetation Plan would represent
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
a reasonable level of effort to mitigate
the effects of increasing reservoir
surface water elevation that would
inundate 0.4 mile of riverine and
wetlands habitat at Shanker’s Bend.
Okanogan PUD’s Vegetation Plan
includes provisions for monitoring of
restored areas of sites that may convert
from upland meadow to herbaceous
wetland. Restoration of these habitats
under this plan would provide a net
increase in riparian habitat over what
currently exists. Monitoring restored
areas every year for 5 years after license
issuance for success, with replanting if
necessary, would be an appropriate
measure to ensure effectiveness of
habitat restoration.
Disturbance of Vegetation and Wildlife
Resulting From Construction, Road
Grading, and Grounds Maintenance
(BOTA–03, BOTA–04, BOTA–08
Through BOTA–10, and WILD–02)
Okanogan PUD proposes to abandon
and restore a 2,000-foot-long segment of
the existing unimproved shoreline road
traversing riparian habitat along the east
bank of Enloe reservoir. This area would
be restored to natural condition through
the implementation of Okanogan PUD’s
proposed Vegetation Plan. Abandoning
and restoring this segment of the road is
intended to help mitigate the effects of
project construction by eliminating the
current disturbance of wildlife by
vehicular traffic and associated noise
and removing the current interruption
between upland and riparian habitat
posed by the road. Aquatic/riparian
species, such as beaver, waterfowl, and
other riparian birds, and upland species,
such as coyotes, deer, snakes, and birds
that forage in both upland and riparian
areas, would be expected to benefit.
Okanogan PUD proposes in its
Vegetation Plan to plant woody riparian
vegetation along the abandoned
shoreline road. BMPs to protect riparian
and wetland vegetation would also be
employed. Measures such as flagging
and temporarily fencing any wetland
and riparian vegetation in the vicinity of
the project would reduce or avoid
accidental impacts. Okanogan PUD
proposes to provide a biological monitor
to check construction sites on a weekly
schedule to ensure that protected areas
are not disturbed and that fencing is
intact. It further proposes to limit
construction and maintenance-related
disturbance of sensitive habitats by
concentrating construction activities
with the loudest noise to occur in
summer and early fall. This measure
would minimize potential effects on
noise-sensitive species, such as over
wintering birds and bald eagles as much
as possible.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
BLM recommends, in addition to the
measures contained in the Vegetation
Plan, that Okanogan PUD develop a
wildlife management plan that would
include a measure to plant fast-growing
native shade producing trees along the
reservoir, such as native willows, alders,
and/or cottonwoods. While a formal
wildlife management plan was not
developed, Okanogan PUD addresses
facilitating the rapid development of
riparian vegetation in its Vegetation
Plan. Several other related
recommendations made pertaining to
wildlife were adopted (see table 23).
Our Analysis
Construction effects on vegetation
would be limited to vegetation removal
and possible noxious weed
encroachment near the powerhouse and
access road and recreational access
areas. Project operation would not be
expected to result in significant effects
on the upland vegetation communities
near the powerhouse.
Relocating the existing unimproved
access road bordering the east side of
the reservoir approximately 200 feet to
the east (up slope) would not
significantly affect wildlife; it would
allow riparian habitat along low-lying
sections of the current road corridor to
naturally reestablish, resulting in a net
benefit for wildlife and their habitat.
The proposed route would follow an
abandoned irrigation ditch through
highly disturbed terrain largely
consisting of low quality rocky habitat
and debris.
Effects on wildlife would be minor,
consisting primarily of temporary
disturbance or displacement of wildlife
during construction. Most wildlife may
temporarily occupy other, nearby
similar habitats during construction.
Once the project is complete, the minor
and constant noise associated with the
project that could affect wildlife would
be masked by the sound of water flow.
Minor impacts would be associated with
installation of crest gates, connection to
Okanogan PUD’s nearby power
distribution line, and relocation of a
portion of the unimproved access road
along the reservoir.
Effects of Water Elevation Changes on
Riparian and Wetland Vegetation
(BOTA–01 Through BOTA–05 and
BOTA–07)
Okanogan PUD proposes to install
crest gates at the dam, increasing
reservoir water level elevations by 4
feet, which would result in the
inundation of approximately 0.4 mile of
riverine and wetlands habitat at
Shanker’s Bend. BLM comments that
the larger reservoir would reduce
PO 00000
Frm 00051
Fmt 4701
Sfmt 4703
28555
vegetation and wetlands along the shore
of the current impoundment. Okanogan
PUD maintains that increasing the
minimum pool elevation would shift
mesic conditions upslope, but would
not necessarily result in a reduction in
suitable habitat.
In response to BLM, FWS, and
Washington DFW’s recommendations
for a vegetation resources management
plan, Okanogan PUD proposes to plant
riparian vegetation at previously
identified sites along the west and east
banks of the reservoir to mitigate for the
temporary loss of habitat while fringe
riparian vegetation establishes along the
new low water line. It also proposes to
plant riparian vegetation on east and
west banks downstream from Shanker’s
Bend and along the corridor to enhance
the effects of abandoning the shoreline
road. Okanogan PUD would monitor
restored areas and replant if necessary
in accordance with the performance
criteria in its Vegetation Plan.
Our Analysis
Habitat lost, degraded, or disturbed by
project construction, operations, and
maintenance would be restored or
replaced along the Similkameen River.
Habitat that is expected to be affected
includes the 0.4 acre of riparian and
wetland habitat that would be
inundated by the rise in water level
elevation. Currently, the herbaceous
wetland community occupies
approximately 3.5 acres in the project
area and occurs in scattered patches on
low-elevation terraces immediately
adjacent to the reservoir. Although longterm inundation would affect
approximately 12 acres of habitat along
the shore of the reservoir, Okanogan
PUD maintains that this does not
suggest that all 12 acres of habitat would
be lost. The total acres of vegetated
habitat in that zone, including sparsely
vegetated to barren rocky cliff habitat, is
7 acres. The remaining 5 acres of
unconsolidated shore and water would
remain. It is anticipated that while some
of the habitat may become unvegetated;
some habitat may merely undergo
conversion to another wetland cover
type, resulting in a minor long-term
impact.
The restoration and subsequent
operation of crest gates would increase
the minimum pool elevation and
inundate narrow strips of riparian and
wetland habitat along the reservoir for
longer periods than now occurs. Some
habitat loss would be short-term and
naturally mitigated as the inundated
area would be replaced by the
establishment of new riparian habitat
upslope within a few years. Fringe
riparian strips would eventually
E:\FR\FM\17MYN2.SGM
17MYN2
28556
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
reestablish along the new water line, in
response to the higher water levels.
Permanent alteration of about 5.1 acres
of wetlands and riparian vegetation
currently occupying seasonally exposed
flats or benches along the reservoir
would likely occur.
Under a run-of-river mode of
operation, all project outflows would
approximate all project inflows at any
point in time. In this operation mode, a
stable water level of the reservoir and
stable flow in the downstream tailrace
would be maintained. As such, effects of
modified flows on vegetation and
wildlife downstream of the dam would
be negligible.
Implementation of Okanogan PUD’s
proposed riparian restoration as a
component of its Vegetation Plan would
provide a reasonable level of effort to
restore and maintain these affected areas
under altered conditions. The measures
proposed to protect, mitigate, and
enhance the affected riparian, wetland,
and low-elevation upland habitats
would benefit wildlife in the project
vicinity by helping to preserve and
enhance habitats surrounding the subbasin that are important to maintaining
wildlife populations, including small
game species, migratory birds, and other
wildlife.
grazing control measures, including
fencing, to protect sensitive riparian
areas and restored sites. Okanogan
PUD’s Vegetation Plan includes a
provision for installing a stock watering
tank approximately 300 feet upslope
from the river, just inside the project
boundary and north of the proposed
recreation site, as an alternative source
of drinking water for grazing cattle
(Okanogan PUD, 2009b). BLM
recommends that any new livestock
water development associated with the
project include a wildlife escape ramp.
Effects of Construction, Operation, and
Maintenance of Project Facilities on
Grazing Access (BOTA–06)
The lands within and adjacent to the
proposed project boundary are currently
not fenced. Cattle have free access to the
river wherever the topography allows.
Livestock grazing practices have led to
trampled streambanks, increased bank
erosion and sedimentation, and changes
in vegetation, including loss of native
grasses, effects on woody vegetation,
and establishment of noxious weeds
(PNRBC, 1977). Currently, grazing
pressures occur mostly along the eastern
side of the project area.
To protect riparian/wetland
mitigation sites for the project from
grazing and trampling damage while
mitigation plantings are establishing,
Okanogan PUD proposes livestock
fencing for most of the eastern side of
the project area along the Similkameen
River between Enloe dam and Shanker’s
Bend. An additional security/safety
fence section is proposed for the
landward side of the new powerhouse,
its intake at the dam, and the area
between the intake and the powerhouse.
Protective enclosures for individual
plants would be used to protect young
plantings from consumption by cattle
and wildlife, such as beaver or deer.
FWS and Washington DFW
recommend that Okanogan PUD install
Noxious weeds and other invasive
plant species can negatively affect
native plant communities and wildlife,
as well as recreation, aesthetics, cultural
values, and economic resources. Several
federal, state, and county policies and
regulations have been developed to
address concerns about the spread of
weeds, and to guide management of
weeds on private and public lands.
Landowners in the state of Washington
are required by state law and various
county ordinances to take steps to
control the spread of certain specified
noxious weeds on their property.
Okanogan PUD proposes to include a
noxious weed control program as a
component of its Vegetation Plan. This
program would include noxious weed
control measures for the proposed
construction and management activities.
Monitoring provisions in the vegetation
resources management plan would
include monitoring of sites that may
convert from upland meadow to
herbaceous wetland.
Okanogan PUD also proposes to
include soil disposal and revegetation
measures BOTA–12 and 13, as a
component of the Vegetation Plan to
further limit introduction and potential
spread of noxious weeds within the
project area. Prior to excavation and
placement of spoil, existing vegetation
in construction areas would be cleared
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
Our Analysis
Okanogan PUD’s proposal to install
fencing would protect riparian/wetland
areas while accommodating livestock
grazing. Okanogan PUD would need to
consult with BLM, however, regarding
finalizing its proposal to address grazing
permittees’ access to and use of water,
including the provision of a wildlife
escape ramp as part of its Fence Plan
consultation (see section 3.3.6,
Recreation and Land Use).
Effects of Construction, Operation, and
Maintenance of Project Facilities on the
Introduction and Spread of Noxious
Weeds Within the Project Boundary
(BOTA–11 Through BOTA–13)
PO 00000
Frm 00052
Fmt 4701
Sfmt 4703
and grubbed and buried in spoil
disposal areas.
The spoil disposal areas would be
surveyed for the noxious weeds
addressed in the Vegetation Plan and
control measures would be
implemented to control any infestations
of those species prior to spoil disposal.
Following completion of spoil disposal,
the spoil disposal areas would be
hydroseeded with appropriate seed
mixes to encourage revegetation with
native upland species and reduce the
potential for noxious weed introduction.
These areas would be included in
subsequent weed survey and treatment
efforts.
FWS and Washington DFW
recommend that Okanogan PUD
implement a noxious weed control
program to increase wildlife forage.
BLM recommends the measures
proposed in Okanogan PUD’s proposed
noxious weed control program be
incorporated as a component of its
recommended vegetation resources
management plan. This plan would
allow inclusion of additional provisions
that, at a minimum, would identify and
limit introduction and potential spread
of noxious weeds. Specifically, BLM
further recommends expanding
Okanogan PUD’s proposed Vegetation
Plan to include surveying;
documentation of species occurrences;
treatment method and type of
application; post treatment and site
rehabilitation; and long-term prevention
and control of noxious and invasive
weeds; and mapping and digital
database development.
BLM, FWS, and Washington DFW
further recommend Okanogan PUD
monitor restored areas (upland sites,
riparian and wetland sites) every year
for 5 years and continue monitoring
every 5 years thereafter and replant sites
as necessary. Okanogan PUD’s
Vegetation Plan includes provisions for
monitoring of restored areas of sites that
may convert from upland meadow to
herbaceous wetland and maintains
monitoring should be discontinued once
success criteria have been met.
Our Analysis
Noxious weeds and invasive nonnative plants are a growing threat
throughout the west. Diffuse knapweed,
in particular, is an invader species and
a serious water quality threat in the
Similkameen watershed. The
introduced species crowd out the native
vegetation and create instability along
the riverbanks. There are multiple small
areas of noxious weed infestations
within the project boundary that would
be controlled, reduced, or eradicated
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
through the implementation of a
noxious weed management program.
While concentrated along access
roads and disturbed areas, weeds and
invasive species are widespread
throughout the project area. Prevention
of introduction and spread of weeds
relies on early detection, effective
treatment, on-going education of land
managers and the public about weed
issues, and proper planning and
management of ground disturbing
activities. Monitoring existing weed
populations and patrols to identify new
infestations are essential to evaluate the
success of the steps being taken to
control and prevent the spread of
weeds.
Without management, weeds would
likely continue to spread because of
their tolerance for a variety of soil and
moisture conditions, and their ability to
out-compete native plants. Project
construction and maintenance activities
and increased human activity, in
addition to wind, water, and animal
transport, would continue to serve as
vectors for weed dispersal.
Implementation of Okanogan PUD’s
noxious weed control program as a
component of its Vegetation Plan would
represent a reasonable level of effort to
control existing weed populations and
prevent the introduction and further
spread of weeds in the project area.
Implementation of the program would
also encourage the growth of native
plant species by preventing
encroachment of non-native weeds on
existing plant populations. The adaptive
nature of the program would enable the
plan to be responsive to changing
conditions such as changes in weed
status, occurrence, or distribution.
Effects of Construction, Operation, and
Maintenance of Project Facilities on
Wildlife Species (WILD–01 and
WILD–02)
Okanogan PUD proposes several
measures to protect and reduce effects
on wildlife at the project. Construction
activity (WILD–02) would be timed to
minimize effects on over-nesting and
over-wintering birds and bald eagles, as
much as possible. Okanogan PUD also
proposes a new 13.2-kV, approximately
100-foot-long primary transmission line
(WILD–01). It would be constructed and
connected to the Okanogan PUD’s
existing distribution system at an
existing pole immediately to the east of
the proposed project location. The
existing pole would be relocated or
modified to prevent raptor
electrocutions.
FWS, BLM, and Washington DFW
recommends that, in addition to the
measures contained in the Vegetation
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
Plan, Okanogan PUD develop a wildlife
management plan that would include a
measure to plant fast-growing native
shade producing trees along the
reservoir, such as native willows, alders,
and/or cottonwoods. The agencies also
recommend that all dead trees along the
reservoir be retained as perch trees until
the planted trees are large enough for
raptor use and that the project
transmission line crossing the
Similkameen River be visually marked
to prevent avian collision. They further
recommend the installation of 10
artificial perch poles along the reservoir
shoreline and in places where perch
trees are sparse or lacking, and an
unspecified number of nest boxes for
small birds in areas that lack snags or
natural tree cavities. They also
recommend that to avoid disturbance of
Townsend’s big-eared bats using project
lands, Okanogan PUD install barriers on
irrigation canal tunnels to prevent
human entry while allowing use by bats,
and exclude project activities during the
winter bat hibernation period. BLM
recommends that Okanogan PUD
institute seasonal restrictions on human
activity near active nest sites of bald
eagles, golden eagles, ospreys, peregrine
falcons, and other raptors on BLMadministered lands within the project
boundary. Washington DFW
recommends that the wildlife
management plan also provide a 200foot-wide buffer around wetlands/
riparian habitat.
While a formal wildlife management
plan was not developed, several of the
agency recommendations made
pertaining to wildlife were adopted (see
table 23). As a component of its
Vegetation Plan, Okanogan PUD would
employ BMPs to limit vegetation
maintenance in sensitive habitats to the
extent possible. This would include the
retention of snags and dead trees, with
the exception of trees that pose a hazard
to human and facility safety. Okanogan
PUD states that a previous fire resulted
in the loss of large shoreline
cottonwoods and other trees that could
provide perching or cavity-nesting
habitat. Okanogan PUD maintains that
the project would not affect perching or
cavity-nesting habitat in areas that lack
such habitat and that perch poles and
nest box installation should not be
required.
Our Analysis
The construction, operation, and
maintenance of the proposed project is
expected to have minimal effects on
wildlife because the footprint for the
hydroelectric facility would be small
and effects on flows would be minimal.
Primary effects would be associated
PO 00000
Frm 00053
Fmt 4701
Sfmt 4703
28557
with human activity and noise
associated with project construction and
restoration.
Implementation of Okanogan PUD’s
WILD–01 and WILD–02 measures
would reduce the effects of project
construction and operation on bald
eagles and other wildlife that use the
project area. Bald eagle use of the area
is incidental and transient and is not
expected to be affected by the project.
Modification to the transmission line
pole would protect wildlife that use the
eastern side of the reservoir and reduce
the adverse effects of the power line on
raptors and other birds. The
transmission line would not cross the
Similkameen River, further reducing the
potential for avian contact (see figure 1).
Okanogan PUD does not propose to
remove any non-hazard trees along the
reservoir, including potential perching
trees, therefore, no effects to existing
perching habitat are anticipated.
Likewise, any reduction in potential
nesting habitat for cavity nesters would
be slight and temporary, as shifts in
riparian habitat occur in response to the
new minimum pool elevation and new
riparian vegetation establishes. This
would not be a substantial adverse effect
and does not require mitigation. Effects
on bald eagles and other sensitive
species would be limited and would be
mitigated by measures addressing
shoreline vegetation management,
construction timing, and transmission
pole modification. The proposed project
would not affect these habitats. The
Vegetation Plan, which includes the
abandonment and natural restoration of
the 2,000-foot-long segment of the
existing unimproved shoreline road,
would provide the same protection for
riparian and wetland habitats as the
200-foot-wide buffer.
Construction, demolition, and
blasting may disturb wildlife in the
immediate vicinity of these activities.
Okanogan PUD proposes to time
construction activity to minimize effects
on wildlife including nesting and overwintering birds and bald eagles, as
much as possible. Bald eagles and other
wildlife may be temporarily displaced
from the immediate project area and
may avoid perching or feeding near the
project. Because most perch trees are
located considerably upriver from the
dam, the disturbance effect should be
minimal.
Most habitats in the project area are
already affected by some level of human
disturbance, due to existing informal
recreational access. Development of a
proposed public access site near the
dam would not substantially increase
the level of human disturbance on
water-dependent wildlife within the
E:\FR\FM\17MYN2.SGM
17MYN2
sroberts on DSK69SOYB1PROD with NOTICES
28558
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
project area. It is likely that some
vegetation would be removed or
disturbed for site access and
improvement. Much of this disturbance
would occur in previously altered areas
or in areas adjacent to existing facilities.
As a result of this disturbance, some
wildlife species that use riparian areas
could be temporarily displaced.
Okanogan PUD proposes to provide a
biological monitor during construction
to further assist with resource
protection.
Once the project is complete, minor
noise would be associated with the
operation and maintenance of the
hydroelectric facility, but generally
would be masked by the sound of water
flowing over the dam or the falls, or
through the tailrace immediately below
the dam (water would not flow over the
dam or falls for 10 months of the year,
thus it would not mask noise from
operations). Noise levels at the facility
would be fairly constant at all times.
Wildlife commonly habituate to
constant noise and human disturbance
levels, provided they are not harassed
by people working at the facility. Most
wildlife would be expected to return
once construction activities diminish
and work is completed.
Activities related to the construction,
maintenance, and increased recreational
use associated with the project may
disturb Townsend’s bats, which are
highly sensitive to human disturbance.
Although not proposed by Okanogan
PUD, Washington DFW recommends
installation of barriers on the project’s
defunct irrigation tunnels. A recent
inspection in March 2010 noted that the
tunnel entrance nearest to Enloe dam
had been blocked by a landslide, and,
therefore, would not be suitable habitat
for bats. Tunnel sites near Shanker’s
Bend and further upstream probably
have more potential for good bat habitat
than the tunnels closer to Enloe dam.
These sites are far enough from the
project site that recreational or
construction noise would be unlikely to
affect bats.
Under measure WILD–02, Okanogan
PUD’s proposes to concentrate
construction activities with the loudest
noise to occur in summer and early fall
to minimize effects to over wintering
birds and bald eagles as much as
possible. This mitigation measure
would also serve to reduce noise
impacts to any bats potentially using the
area close to the site of construction.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
3.3.5 Threatened and Endangered
Species
3.3.5.1
Affected Environment
Aquatic Species
Bull trout (Salvelinus confluentus) are
listed as threatened by the FWS and
have been reported to occur in the
Okanogan River, but are not found in
the Similkameen River. We conclude
that bull trout are not present in the area
that is subject to project effects.
Therefore, the proposed Enloe Project
would have no effect on the federally
listed Columbia River bull trout.
UCR steelhead (Oncorhynchus
mykiss) is listed as threatened and the
Similkameen River from its confluence
with the Okanogan River to the
Similkameen Falls is designated as
critical habitat. UCR steelhead spawn in
the Similkameen River downstream
from the falls. In its February 26, 2010,
letter, NMFS stated that UCR steelhead
enter the river from mid-September
through April; spawning usually occurs
in March through July. Adults hold in
the river from the mouth to the plunge
pool below the falls until spawning
takes place. Most of the UCR steelhead
redds are found below Oroville Bridge
at RM 5, and above the cross channel
with the Okanogan River. There are no
known UCR steelhead spawning areas
within the project boundary. During
Okanogan Basin Monitoring and
Evaluation Project surveys of the lower
section of the Similkameen in 2005, 106
UCR steelhead redds were counted;
their density was 18.8 redds per square
mile. In 2006, 98 redds were counted,
and their density was 17.4 redds per
square mile. Fry emerge from the gravel
between July and September, and move
downstream in search of overwintering
habitat in the fall. Juveniles generally
rear in freshwater for 2–3 years before
migrating to the ocean.
Terrestrial Species
Vegetation
As previously mentioned, the Ute
ladies’-tresses (Spiranthes diluvialis)
could occur within the project area.
FWS lists Ute ladies’-tresses as federally
threatened and therefore protected
under the ESA (FWS, 2010). FWS
initiated a status review in 2004 for this
species, but no determination has been
issued to date regarding a change in
status. No other federally-listed plant
species have been found within the
project boundaries. Ute ladies’-tresses is
a perennial terrestrial orchid that
flowers from mid-July through August
in Washington. It is found in early to
mid-seral vegetation in wet meadows,
stream or river banks, irrigated hay
PO 00000
Frm 00054
Fmt 4701
Sfmt 4703
meadows, and wetlands associated with
wet meadows, springs, streams, lakes,
irrigation ditches, and reclaimed gravel
and peat mines.
Although this orchid was reported as
historically found in riparian areas in
Colorado, Utah, and Nevada when it
was listed, existing populations were
known only in Colorado and Utah at
that time. Since 1992, populations have
been found in Montana, Wyoming,
Idaho, Nebraska, and at four locations in
Washington. One Washington location
is in a periodically flooded alkaline flat.
The other three are on stabilized gravel
bars along the Columbia River.
Washington populations are at
elevations ranging from 720 to 1,500
feet. No critical habitat has been
designated for this species.
The nearest known population to the
Enloe Project is at Wannacut Lake,
approximately 5 air-miles to the
southwest. Wannacut Lake is in the
Whitestone Creek watershed, and the
Whitestone Creek confluence with the
Okanogan River is approximately 9.8
miles downstream of the Similkameen
River confluence with the Okanogan
River. No individuals of Ute ladies’tresses or any other species of
Spiranthes were observed during
Okanogan PUD’s botanical surveys of
the project area in 2006, 2007, or 2009.
However, the surveys identified two
areas of suitable habitat. An
approximately 9-square-foot area at the
edge of the reservoir (Okanogan PUD,
2009d) and a sparsely vegetated area at
the downstream end of the proposed
side channel enhancement location,
immediately adjacent to the active
Similkameen River channel
approximately 5 miles downstream from
Enloe dam, could provide potential
habitat for these species, although Ute
ladies’-tresses were not observed during
an October 2009 survey.
Wildlife
FWS lists three wildlife species
potentially occurring in Okanogan
County that are federally designated as
threatened and therefore protected
under the ESA (FWS, 2010). These
species are the Canada lynx (Lynx
canadensis), grizzly bear (Ursus arctos),
and northern spotted owl (Strix
occidentalis caurina). Designated
critical habitat for two of these species—
Canada lynx and northern spotted owl—
is also present in Okanogan County.
Based on literature review and agency
consultations, these species are not
likely to occur within the project area
due to the lack of suitable habitat.
Effects on these species are not likely to
occur due to their absence within the
project area.
E:\FR\FM\17MYN2.SGM
17MYN2
sroberts on DSK69SOYB1PROD with NOTICES
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
Canada Lynx—The Canada lynx is a
medium-sized cat that is highly mobile
and has a large home range. Its
population and distribution is closely
tied to its main prey, the snowshoe hare.
Populations in northern boreal regions
fluctuate in response to snowshoe hare
population level cycles; however, this
cycling has not been found to occur in
Washington (Stinson, 2001).
Canada lynx inhabit moist coniferous
forests with cold, snowy winters. In
Washington, the majority of lynx
records and evidence of reproduction
are from older lodgepole, subalpine fir,
and spruce forests at elevations higher
than 4,000 feet (Stinson, 2001). Based
on Washington surveys, the nearest
designated critical habitat for the
Canada lynx is located in existing Lynx
Management Zones of the Okanogan
National Forest. The Okanogan Lynx
Management Zone contains extensive
stands of lodgepole pine and supports
one of the largest lynx subpopulation in
Washington. The project area, however,
is not located within this designated
critical habitat.
Furthermore, forests around the
project area include shrub-steppe and
riparian species that are located well
below elevations typically occupied by
Canada lynx, and are not characterized
as forest habitat that would be
considered suitable for this species.
Prey opportunities are also not available
at or near roadways, proposed facilities,
and other project features close to the
Similkameen River.
For these reasons, the Canada lynx is
unlikely to occur in the project area. No
studies were requested or performed by
Okanogan PUD to investigate the
presence or status of the Canada lynx in
the project area. We conclude the
Canada lynx is not likely to occur in the
project area. The project would have no
effect on the Canada lynx, and for this
reason, we do not discuss this species
further in this EA.
Grizzly Bear—Preferred habitats of
grizzly bears include sub-alpine
meadows and open or semi-open
forests, but individuals are very wideranging and can be found in diverse
habitats. Dens are typically located far
away from human activity on steep
slopes where snow accumulation is
deep and persistent. Seasonal
movements often occur associated with
patterns of newly sprouted vegetation,
ripening berries, spawning salmon runs,
and the availability of other prey, such
as marmots.
FWS established several recovery
zones throughout the western United
States in 1993; the North Cascades
Ecosystem Recovery Zone is the only
zone in north central Washington.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
Current population levels in this zone
are unknown, but are believed to be
very low, possibly fewer than 20
animals (FWS, 2004). Without
augmentation, FWS concludes there is a
low likelihood of recovery in the north
Cascades (FWS, 2004).
Grizzly bears are unlikely to occur in
the project vicinity other than as a rare
transient. Okanogan PUD did not
perform and the agencies did not
request any studies to investigate the
presence or status of the grizzly bear in
the project area. The grizzly bear is
unlikely to occur in the project area.
The project would have no effect on the
grizzly bear, and we do not discuss this
species further in this EA.
Northern Spotted Owl—Northern
spotted owls inhabit temperate forests of
the Pacific Coast region from
southwestern British Columbia, through
the Olympic and Cascade ranges in
Washington and Oregon to north central
California. The northern spotted owl is
commonly associated with old-growth
or mature conifer forest stands,
especially during nesting, although
younger stands that have latesuccessional stand remnant structures
are also sometimes used, especially
during times of dispersal (Thomas et al.,
1990).
Nest sites are generally located in
previously excavated cavities or on
platforms in large trees, and northern
spotted owls may use nests built by
other species (FWS, 2008). Established
pairs normally remain in the same
territories from year to year and foraging
areas may reach nearly 2,500 acres
(FWS, 2008). Breeding behavior is
generally initiated in March and
continues into June, depending on
elevation. Parental care continues into
September and sometimes October, as
fledglings learn to fly and hunt on their
own. FWS considers the period between
March 1 and July 15 to be the early
breeding season, when birds are most
vulnerable to disturbance. Birds may be
less sensitive during the late breeding
season (July 16 and September 30).
The northern spotted owl was listed
as federally threatened on June 26, 1990.
FWS issued a final recovery plan in May
2008 (FWS, 2008). Based on Recovery
Action 4 of the plan, FWS revised the
designation of critical habitat to provide
for a network of managed owl
conservation areas that are of sufficient
size and spacing to achieve long-term
recovery of spotted owls. The
designation includes only federal lands.
FWS designated managed owl
conservation areas in north central
Washington, which includes Critical
Habitat Unit 3. It consists of
approximately 115,600 acres in
PO 00000
Frm 00055
Fmt 4701
Sfmt 4703
28559
Whatcom, Okanogan, and Chelan
counties and is composed of lands
managed by the Okanogan and
Wenatchee National Forests.
The project area is not located within
Unit 3; the project area does not meet
the size requirement of small habitat
blocks and is not within the Okanogan
National Forest. The forested areas
around Enloe dam and along the access
roads and project facilities do not
provide suitable habitat for nesting,
roosting, and foraging. No studies were
requested by FWS or other agencies
participating in the licensing, and none
were performed by Okanogan PUD to
investigate the presence or status of
northern spotted owls in the project
area. The northern spotted owl is
unlikely to occur in the Project area.
The project would have no effect on the
northern spotted owl, and we do not
discuss this species further in this EA.
3.3.5.2
Environmental Effects
Aquatic Species
UCR Steelhead
We evaluated the effects of Okanogan
PUD’s proposed measures on aquatic
resources, including UCR steelhead, the
only listed fish species known to occur
in project affected waters, in section
3.3.3.2, Aquatic Resources. As we
previously noted, the Similkameen
River below Similkameen Falls is
designated critical habitat for the
threatened UCR steelhead, and UCR
steelhead use the Similkameen River for
spawning, rearing, and thermal refugia.
Our Analysis
Under the proposed action, fish
passage would not be provided at the
dam, and the 370-foot long bypassed
reach would only receive a minimum
flow of 10 to 30 cfs during the low flow
months,34 when most of the river flow
would be diverted through the
powerhouse and returned to the river
below the falls. As discussed in section
3.3.3.2, we have concluded that the
Similkameen Falls is a natural barrier to
fish passage preventing fish migration
further upstream, so the project would
have no effect on the upstream
migration of the UCR steelhead.
Similarly, because steelhead are unable
to use the bypassed reach as habitat, and
the reach is not considered critical
habitat, there would be no effect on UCR
steelhead by only providing a relatively
low minimum flow in the reach.
Other recent Okanogan PUD
proposals related to the WQC
34 This is Okanogan PUD’s alternative minimum
flow proposal based on agreements reached in WQC
negotiations with Washington DOE and Washington
DFW, as reported in its filing of October 28, 2010.
E:\FR\FM\17MYN2.SGM
17MYN2
sroberts on DSK69SOYB1PROD with NOTICES
28560
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
negotiations would also have no effect
on the UCR steelhead, or would act to
enhance habitat quality for this species.
The proposed temperature and DO
monitoring and associated adaptive
management program would ensure that
water quality downstream of the project
continues to meet state standards, and
adequate quality for the UCR steelhead.
Other measures related to developing
appropriate ramping rates for spillage
flow over Enloe dam, and determining
a point of release for the minimum flow
from Enloe dam, would have no effect
on UCR steelhead because this species
does not occur upstream of
Similkameen Falls.
Overall, Okanogan PUD’s proposed
environmental measures would be
consistent with the Upper Columbia
Spring Chinook Salmon and Steelhead
Recovery Plan developed by the Upper
Columbia Salmon Recovery Board to
restore viable and sustainable
populations of salmon, steelhead, and
other at-risk species through
collaborative, economically sensitive
efforts, combined resources, and wise
resource management of the Upper
Columbia region. This plan is an
outgrowth and culmination of several
conservation efforts in the Upper
Columbia River Basin, including current
efforts related to the ESA, state and
tribal-sponsored recovery efforts,
subbasin planning, and watershed
planning. In regard to Enloe dam, the
plan does not identify upstream and
downstream passage of fish as being a
short-term or long-term action that
would contribute to the restoration of
these fish stocks. This conclusion was
based on the uncertainty of fish being
able to ascend the falls before the
construction of Enloe dam at that site.
Although Okanogan PUD’s overall
plans for development of the Enloe
Project would generally enhance aquatic
habitat in the Similkameen River,
construction of the project would have
the potential to adversely affect UCR
steelhead and UCR steelhead designated
critical habitat. These effects would be
associated with: (1) The direct or
indirect effects of blasting activities that
may cause mortality or injury to
steelhead adults and juveniles in the
plunge pool immediately below
Similkameen Falls; and (2) turbidity
plumes and sedimentation, including
potential contaminated sediment,
within steelhead habitat, which could
cause injury or mortality of eggs, fry,
and juvenile fish due to smothering or
abrasion. Okanogan PUD has proposed
several measures to minimize the effects
of construction on downstream aquatic
habitat (the fish salvage plan for
blasting, the Spill Response Plan, the
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
CSMP, the ESCP, employing BMPs, and
the Storm Water Pollution Prevention
Plan). The proposed measures would
minimize potential take of UCR
steelhead during blasting activities;
however, some take due to physiological
stress, injury, predation, or mortality
could still occur. Development of a fish
salvage plan that includes seasonal
work windows, in consultation with
NMFS, FWS, and Washington DFW,
would reduce the potential for injury or
mortality of steelhead during capture
and relocation activities. Measures to
control erosion and sedimentation
would also reduce the potential for
effects on steelhead, but some
physiological stress could still occur
during unanticipated releases of
turbidity or sedimentation.
Project operations could affect the
UCR steelhead, as a result of some flow
fluctuations downstream of the project,
and the potential for adult steelhead to
swim into the project draft tubes and
impact the runner blades. The project
would be operated run-of-river so that
outflow equals inflow to the reservoir,
but there could be some fluctuations in
flow releases as unit operations change
or as spill gates are opened or closed,
possibly resulting in the stranding of
redds, fry, and juveniles. Okanogan
PUD, however, is proposing a ramping
rate below the project ranging from 1 to
2 inches per hour depending on the
season and time of day. These proposed
rates would minimize any effects related
to stranding of UCR steelhead
downstream of the project. Okanogan
PUD is also proposing to install draft
tube net barriers to prevent adult
steelhead from entering the draft tubes
during operational periods when lower
outlet velocities may prevail. Successful
deployment of these barriers would
prevent steelhead from entering the
draft tubes and experiencing injury or
death by contacting the runner blades.
Okanogan PUD also proposes habitat
enhancement measures in the
Similkameen River downstream of the
project, including supplementing
spawning gravel, transporting large
woody debris to enhance habitat
diversity, and providing side channel
enhancements that would provide
coldwater side channel habitat for
steelhead juveniles. Although the
measures would likely enhance aquatic
habitat for listed UCR steelhead
downstream of the falls, the risk of
incidental adverse effects on individual
fish cannot be entirely eliminated. Some
short-term habitat degradation would
occur during construction and
implementation of the gravel
supplementation program and sidechannel enhancement projects. All of
PO 00000
Frm 00056
Fmt 4701
Sfmt 4703
these proposed measures would entail
instream work, which has the potential
to result in injury or mortality of eggs,
fry, or juvenile trout that may be in the
direct path of instream equipment, or
during placement of structures and/or
gravel in the stream channel, or create
turbidity and sedimentation. In the long
term, these measures would provide
benefits to steelhead, such as improved
spawning and rearing habitat in the
river downstream of the dam and
increased productivity. Okanogan PUD’s
proposed biological review process,
fisheries monitoring, and adaptive
management program would also
provide long-term benefits for UCR
steelhead and UCR steelhead designated
critical habitat, because those programs
would ensure that the proposed
mitigation and enhancement measures
are being successfully implemented.
Although long-term benefits would
occur as a result of measures proposed
by Okanogan PUD, we conclude that
licensing the project would adversely
affect the federally listed UCR steelhead
because proposed project construction
and habitat enhancement projects could
result in short-term increases in
turbidity and sedimentation and the risk
of injury or mortality to eggs, fry,
juveniles, or adults as a result of runoff
from construction and instream use of
equipment. Construction of the tailrace
could result in injury or mortality to
eggs, fry, juveniles, or adults caused by
capture and transport, relocation, and
blasting. We conclude that the proposed
project would not appreciably diminish
the value of designated UCR steelhead
critical habitat for both survival and
recovery of this species, but because of
potential impacts on steelhead during
the construction period, we will request
formal consultation with NMFS
pursuant to section 7 of the ESA.
Terrestrial Species
The following sections summarize our
analyses for Ute ladies’-tresses, which
may be affected by project operation or
project-related activities.
Effects of Construction, Operation, and
Maintenance of Project Facilities on
Federally Listed Species and Their
Habitats (BOTA–14 and WILD–03)
Habitat for the threatened Ute ladies’tresses has been identified within the
project area. Okanogan PUD did not
observe this species in surveys of the
project area it conducted in 2006, 2007,
and 2009. The survey of the proposed
side-channel enhancement site was
conducted in October 2009, outside the
typical mid-July through August
flowering period when Ute ladies’tresses can be distinguished from other
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
plants; Okanogan PUD states, however,
that the species may still be flowering
or fruiting as late as October.35 BLM
states that Okanogan PUD’s plant
surveys were not adequate to determine
the presence or absence of Ute ladies’tresses. In response to agency concerns
about its plant surveys, Okanogan PUD
proposes to conduct an additional 3
years of surveys for Ute ladies’-tresses
prior to construction (BOTA–14).
Surveys for this species would be
conducted in the summer/fall and
would be timed to correlate with the
flowering period for the Ute ladies’tresses. Okanogan PUD would also take
the following measures that would
protect the Ute ladies’-tresses: employ
BMPs to limit vegetation disturbance in
sensitive riparian and wetland habitats
to the extent possible, control noxious
weeds, conduct an environmental
training program for its employees, and
provide a biological monitor during
construction.
FWS, Washington DFW, and BLM
recommend additional surveys, using
FWS and BLM’s protocols, for Ute
ladies’-tresses and other threatened and
endangered plant species as a
component of their recommended
vegetation resources management plan.
BLM further recommends that the
section of the vegetation resources
management plan, which expands on
Okanogan PUD’s proposed Vegetation
Plan include surveying, documentation
of species occurrences, evaluation of
impacts, and mapping and digital
database development.
FWS and Washington DFW
recommend that Okanogan PUD survey
and document threatened and
endangered plants within 1 year of any
license issuance and every 5 years
thereafter for the duration of the license
term. The agencies further recommend
that Okanogan PUD monitor known
threatened and endangered plant habitat
at 5-year intervals and evaluating the
effects of any new ground-disturbing
activities or substantive changes in
project operation on listed plants and
their habitats prior to implementation of
the activities or changes in operation.
Okanogan PUD would be required to
evaluate the adequacy of the vegetation
resources management plan and update
the plan as needed.
Our Analysis
Habitat for Ute ladies’-tresses has
been identified within the project area
along the reservoir and near the
proposed side-channel enhancement
area. According to Fertig et al. (2005),
35 The 2006 survey was conducted in July and the
2007 survey was conducted in July-August.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
perennial stream and riverine habitats
occupied by this species typically have
short vegetative cover maintained by
grazing, periodic flooding, or mowing.
In the absence of disturbance or as sites
become drier, streamside wet meadow
habitats may become encroached by
riparian shrub or woodland vegetation.
Ute ladies’-tresses populations may
persist for a short time in the grassy
understory of woody riparian
shrublands, but do not appear to thrive
under these conditions.
An approximately 9-square-foot area
at the edge of the reservoir could
support Ute ladies’-tresses, although no
plants were found in Okanogan PUD’s
2006 and 2007 surveys. Okanogan PUD
states that any Ute ladies’-tresses
present along the reservoir would be
adversely affected if they occur in the
area that would be permanently
inundated by the proposed crest gate
operation and if they are unable to
establish at the new water line
(Okanogan PUD, 2009d).
Suitable Ute ladies’-tresses habitat has
also been identified at the proposed
side-channel enhancement site.
Okanogan PUD’s October 2009 survey of
the site did not identify this species.
Okanogan PUD anticipates temporary
disturbance of vegetation at the sidechannel enhancement site to install the
well pad, buried pipeline, and one
power pole for a distribution line to the
well, and proposes to minimize
disturbance to the extent practicable.
The disturbed area would not exceed 40
feet in width within the lower 400 feet
of the channel. Along the pipeline route,
the disturbance area is assumed to be a
10-foot-wide by 300-foot-long corridor.
Operation and maintenance activities at
the side-channel enhancement site
would likely be limited to activities at
the well. The footprint of the proposed
construction and subsequent operation
and maintenance activities could be
adjusted, if necessary, to avoid
adversely affecting any Ute ladies’tresses identified in additional surveys.
Okanogan PUD’s 2006 and 2007
surveys of the Enloe dam and reservoir
area were adequate to identify suitable
Ute ladies’-tresses habitat and were
likely adequate to determine the
presence of the species, although it is
unclear whether Okanogan PUD’s were
conducted using protocols acceptable to
FWS and BLM. Therefore, there would
likely be no adverse effects on Ute
ladies’-tresses as a result of inundation
of the 9-square-foot-area of suitable
habitat at the edge of the reservoir.
However, Okanogan PUD’s surveys of
the suitable habitat at the proposed sidechannel enhancement site were not
PO 00000
Frm 00057
Fmt 4701
Sfmt 4703
28561
conducted at the optimum time to
identify the species.
In order to ensure the protection of
threatened and endangered plant
species, we agree with Okanogan PUD,
FWS, and BLM that additional surveys
should be conducted before landclearing or land-disturbing activities,
both in the Enloe dam and reservoir area
and the side-channel enhancement site.
Monitoring of known threatened and
endangered plant habitat and evaluating
the effects of any new ground-disturbing
activities or substantive changes in
project operation would reduce any
potential effects on threatened and
endangered species such as the Ute
ladies’-tresses and their habitat.
Preparing and implementing a
monitoring plan after consultation with
FWS, BLM, and Washington DFW
would ensure that the 3 years of
additional surveys are adequate to
determine the presence or absence of
Ute ladies’-tresses and other listed
species. If the surveys identify a listed
species in areas that would be affected
by the proposed project, developing a
plan, after consultation with the
agencies, to avoid or minimize adverse
impacts would be appropriate. We
conclude that licensing the project, with
staff’s recommended measures, would
be not likely to adversely affect the Ute
ladies’-tresses.
3.3.6
Recreation and Land Use
3.3.6.1 Affected Environment
The proposed project boundary
includes about 2.75 miles of the
Similkameen River. The proposed
upstream project boundary extends
upstream from the dam (RM 8.80)
approximately 2.50 miles (RM 11.30);
the downstream extends 0.25 mile to
encompass a short reach of the tailwater
(RM 8.55).
Recreation
Regional Recreation Opportunities
As we’ve said, the Enloe Project is
located in north-central Washington
about 2 miles south of the Canadian
border and 3.5 miles northwest of the
city of Oroville on the Similkameen
River in Okanogan County (figure 5).
BLM manages the recreation resources
that provide recreational opportunities
within the Enloe Project area. The
BLM’s Spokane District, Wenatchee
Field Office, manages the informal
Miner’s Flat area located about 3 miles
upstream of Enloe dam and 0.25 mile
upstream of the project boundary.
Dispersed camping occurs on the Flat,
which includes several informal fire
rings created by recreational users, and
there are several trails and a rough road
E:\FR\FM\17MYN2.SGM
17MYN2
28562
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
that provides access to the river.
Similkameen Camp, another primitive
campground maintained by the BLM, is
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
located approximately 2.25 miles
upstream from the project boundary.
BILLING CODE 6717–01–P
PO 00000
Frm 00058
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
28563
BILLING CODE 6717–01–C
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00059
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
EN17MY11.004
sroberts on DSK69SOYB1PROD with NOTICES
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
28564
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
No formal or developed recreation
facilities are located within the Enloe
Project area. The nearest developed
campground is about 4 miles east of
Enloe dam, in Osoyoos Lake State
Veteran’s Memorial Park. Osoyoos Lake
State Veteran’s Memorial Park is a 47acre camping park on a 14-mile-long
lake that stretches several miles north
into British Columbia.
The park has 86 standard camping
sites, one dump station, two restrooms
(one accessible) and two showers, a park
office, small store and entrance kiosk.
Recreational activities include camping,
picnicking, boating, swimming, fishing,
wildlife viewing, bird watching, and
horseshoe pits. Winter activities in the
park include ice skating, snow playing,
and ice fishing.
Washington DFW owns two river
access sites on the Similkameen River
upstream of the Enloe Project area. The
site known as Cutchie #4 is located
about 7 miles west of Oroville on the
Loomis-Oroville Road. The site is
surrounded by private land and is
accessible only from the river; it has no
developed facilities. Another site known
as Cutchie #3 is located about 1.5 miles
south of Nighthawk on the LoomisOroville Road.
The Loomis-Oroville Road in the
vicinity of the Enloe Project area is
designated as a segment of the Pacific
Northwest National Scenic Trail (Scenic
Trail). The Scenic Trail is a 1,200-milelong multi-use recreation trail that runs
from the Continental Divide in the
Rocky Mountains to the Pacific Ocean.
The Pacific Northwest Trail Association
constructed and maintains the Scenic
Trail. A new Okanogan County
Nighthawk Scenic Trail (non-motorized
trail) is currently under construction
and follows the abandoned railroad bed
and Similkameen River between
Oroville and Nighthawk for a total of
12.5 miles. The portion of the trail that
has been completed can be accessed
from the City of Oroville and travels 3.5
miles to a scenic view of Similkameen
Falls at about RM 8.5 and just outside
of the lower end of the proposed project
boundary (Okanogan County, 2010). The
corridor of the old railroad bed for the
Great Northern Railroad runs through
the Similkameen River Valley, roughly
following the west bank of the
Similkameen River from the railroad
trestle bridge located about 2 miles
below Enloe dam. The old railroad bed
passes through the proposed project
boundary and goes through a tunnel
near the upstream end of the Enloe
Project area. BLM owns and manages
most of the Great Northern Railroad
corridor within the proposed project
boundary.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
The Water Trail Committee is
developing a work plan for a water trail
catering to canoes and kayaks in the
Columbia River Basin. The route of the
proposed trail would include the
Similkameen River from the Canadian
border to the confluence with the
Okanogan River at Oroville. The Water
Trail Committee, working with federal,
State, and local partners, proposes to
develop infrastructure, including launch
sites, directional signs, educational
signs, sanitary sites, and campsites.
Extreme Adventures and Alpine
Fishing Guides, a commercial outfitter,
provides raft floating and fishing trips
on the Similkameen River. This outfitter
provides three experiences, including:
(1) A scenic flat water float that starts at
the Canadian border and ends near
Nighthawk or at Washington DFW’s
Cutchie #3 site (mentioned above); (2)
an introduction to whitewater
experience that starts at Miner’s Flat
and ends at Shanker’s Bend; and (3) a
trip that runs through Enloe Dam
Canyon, which starts below Enloe dam
and the falls and provides some
whitewater experiences depending on
the season.
Regional Comprehensive Plans
In terms of regional recreational
management goals, Washington State
Recreation and Conservation Office
(2008) identified the following policy
statements in its Defining and
Measuring Success: The Role of State
Government in Outdoor Recreation, A
State Comprehensive Outdoor
Recreation Planning Document:
• Recognize outdoor recreation sites
and facilities as vital elements of the
public infrastructure, essential to the
health and well-being of Washington
citizens, and important to visitors;
• Assist local and state agencies in
providing recreation sites and facilities
that benefit our citizens’ health and
well-being;
• Provide adequate and continuing
funding for operation and maintenance
needs of state-owned fish and wildlife
habitat, natural areas, parks, and other
recreation lands to protect the state’s
investment in such lands;
• Work in partnership with federal
agencies to ensure the availability of a
variety of opportunities and settings for
outdoor recreation;
• Encourage the private sector to
contribute needed public recreation
opportunities; and
• Encourage all agencies to establish
a variety of financial resources that can
be used to significantly reduce the
backlog of needed outdoor recreation,
habitat, and open space projects.
PO 00000
Frm 00060
Fmt 4701
Sfmt 4703
Recreation Opportunities Within the
Enloe Project Area
There are no formal, developed
recreation sites within the project
boundary. Public use of undeveloped
dispersed recreation sites consists
primarily of individuals who access the
shoreline for fishing, hunting,
swimming, paddle sports (i.e., canoeing,
kayaking, and river rafting), picnicking,
camping, hiking, biking (road touring
and mountain biking), ATV riding,
horseback riding, gold prospecting, bird
and wildlife watching, photography,
and scenic driving. Winter activities
include fishing, snowshoeing,
snowmobiling, and cross-country skiing
when weather allows.
On the east side of the river, two
access roads to project lands spur off of
Loomis-Oroville Road. These access
roads are not maintained for passenger
vehicles. The Enloe Dam Road or
downstream access road is a steep, onelane road that contains exposed
embankments, heavy ruts, and active
erosion areas. This county road is
unsafe for passenger vehicles and lies
partially within the Enloe Project
boundary. The upstream access road or
OTID Road provides informal access to
the river corridor and the reservoir
shore for public use . Heavy brush
impedes clearance, and the road is
heavily rutted and steep in places. The
upstream access road is impassable
during the spring and early summer due
to the spring runoff and remains muddy
for some time after the peak flow period.
Informal/unimproved reservoir access
ramps are located just upstream from
the safety barrier. The old powerhouse
eastbank access road now provides
pedestrian access only to the shoreline
area below the dam for boaters, miners,
anglers, and hikers. An informal/
unimproved parking area is located near
the top of the dam from which emerge
informal user-created trails providing
access to the reservoir above the dam
and some dispersed camping areas on
the east bank of the reservoir.
The steep terrain limits access to the
shoreline on the west bank of the Enloe
reservoir and downstream of the dam.
Below the dam and the falls, the
Similkameen River is confined between
nearly sheer rock walls until the canyon
opens just below the railroad trestle
about 2 miles downstream from Enloe
dam. This downstream canyon area is
accessible only on foot from the east
bank, via informal user trails. Access to
the west bank is limited because the old
rail bed crosses private land and is
gated. From the west bank, access
crosses private land and occurs via
game trails and existing hiking trails
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
leading to the river from the rail grade,
which sits nearly 100 feet in places,
above the river. The only other means
of access is by boat.
Recreation Use Within the Enloe Project
Area
sroberts on DSK69SOYB1PROD with NOTICES
Shore fishing and boating are the most
popular activities inside of the Enloe
Project area. In the past, fishing for
steelhead and Chinook salmon has been
popular downstream of the falls, and
some trout and bass fishing has also
taken place there.
During high water periods, the river
attracts a limited number of whitewater
enthusiasts who run the river above
Shanker’s Bend and below the dam. As
water levels drop and the temperatures
warm, the river sees more relaxed waterbased recreation. Rafting, kayaking, and
inner-tubing have been observed both
above and below Enloe dam in the
Project area. Swimming near Shanker’s
Bend and floating in the canyon below
the dam are popular activities during
these periods. Boaters and floaters use a
number of informal, user-developed
access points in the Project area. Some
users walk down the old access road on
the east bank of the river to launch rafts,
kayaks, and inner tubes just below the
waterfall downstream of the dam.
Okanogan PUD conducted one visitor
intercept survey between June 1 and
October 15, 2006, to coincide with the
peak recreational use, particularly to
encompass the recreational gold mining
season, to gather information to estimate
visitor use of the Enloe Project area.
Because the survey was conducted
during only one recreational use season
(2006), Okanogan PUD assumed that
2006 was an ‘‘average’’ recreational use
year. Recreational use estimates were
based on 59 survey records completed
with respondents in the field on 21 days
from June 1 through October 15, 2006.
Surveys were conducted on weekdays,
weekend days, and ‘‘peak’’ days
(selected holiday weekends).
Survey results indicate that use of the
Enloe Project area is estimated at 1,378
user days during the June 1–October 15
peak recreation season. Table 14
provides Okanogan PUD’s estimate of
monthly user-days during the June–
October recreation season. Use peaks
quickly in July and remains at a fairly
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
constant level from August through
October. Outside of the Enloe Project
area the most popular recreational
activity is gold prospecting followed by
boating, shore fishing, and sightseeing.
Most of the mining and camping
activities occur outside of the Enloe
Project area.
TABLE 15—ESTIMATE OF USER DAYS
BY TYPE OF DAY FOR THE PROJECT
AREA—Continued
[Source: Okanogan PUD, 2008a]
Type of day
Total ...................................
TABLE 14—ESTIMATE OF USER DAYS
BY MONTH FOR THE PROJECT AREA
[Source: Okanogan PUD, 2008a]
Estimate of user
days
Month
Number
June ..............................
July ...............................
August ...........................
September ....................
October .........................
190
346
267
278
297
28565
Number
Per
day
1,378
a Days
coinciding with holidays or recreational events, including Fourth of July (4
days), Northwest Miner’s Rally (3 days), Labor
Day/Blues Festival (3 days), and first weekend
of deer hunting season (2 days).
Although thirty-three respondents (60
percent) reported staying longer than
Percent
one day at the project area, only two of
13.8 the parties surveyed actually camped
25.1 within the Enloe Project area due to the
19.4 absence of developed facilities.
20.2
21.6
Land Use
The proposed Enloe Project boundary
is generally defined by the 1,055-foot
elevation contour. The boundary
Table 15 indicates estimated user
extends 0.25 mile downstream from
days by type of day. In this area,
Enloe dam, following the 1,055-foot
weekend and weekday use levels are
elevation contour to include the falls
similar, but peak days show a marked
and the site of the proposed
increase in use.
powerhouse, tailrace, and associated
Fishing occurs mainly in the lower
facilities. The Enloe Project boundary
reaches of the Similkameen River near
deviates from the 1,055-foot elevation
Oroville; however, many anglers walk
contour to accommodate rehabilitation
down the old access road on the east
of the OTID Ditch Road. In that area, the
bank of the river to fish just below the
Enloe Project boundary has been set 100
dam. Okanogan PUD reported that as
feet landward of the OTID Ditch Road’s
many as 30 people have been seen at
upper leg; it does not maintain a
one time fishing below the falls. In
specific elevation.
response to surveys, visitors expressed
Agriculture, grazing, and recreation
the importance of the river corridor
are the primary land uses in the Enloe
below the dam and falls for fishing, gold
Project vicinity. A number of orchards,
prospecting, and sightseeing; a desire
vineyards, and a public golf course are
for safety features or assigned a high
located along the Loomis-Oroville Road.
priority to the provision of additional
The Enloe Project area is unfenced open
facilities; and a need for picnic
range, and the BLM lands in the
facilities, vault toilets, garbage
immediate vicinity of the Enloe Project
collection, and improved river access.
are generally leased for grazing (figure
TABLE 15—ESTIMATE OF USER DAYS 6). The bulk of the private land in the
Enloe Project area is owned by a
BY TYPE OF DAY FOR THE PROJECT livestock company. There are a few
AREA
residences in the Enloe Project vicinity,
[Source: Okanogan PUD, 2008a]
mainly along the Loomis-Oroville Road.
Most active land uses are some distance
Per
Type of day
Number day from the Enloe Project area, with the
nearest located about 1 mile
Peak daysa ............................
540
14 downstream. There are no lands
Weekend days ......................
190
6 designated as prime or unique
Weekdays .............................
648
6 farmlands within the FERC boundary.
Total ..........................
PO 00000
1,378
100.0
BILLING CODE 6717–01–P
Frm 00061
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
BILLING CODE 6717–01–C
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00062
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
EN17MY11.005
sroberts on DSK69SOYB1PROD with NOTICES
28566
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
Mining was once a dominant land use
in the region; however, commercial
mining activity in the Similkameen
Valley in Washington has been very
limited during the past 25 to 35 years.
Several small individual mining claims
exist on BLM lands in vicinity of the
Enloe Project. Recreational gold
prospecting (small-scale placer mining;
conducted primarily with motorized
suction dredges) is popular within the
river corridor.
One of the largest commercial mines
in the area was the Kaaba-Texas Mine,
located several miles upstream of the
project area, near the community of
Nighthawk. The mine operated from the
late 1890s until 1951, and discharged
tailings directly into the Similkameen
River until 1946. In 1999, the EPA
removed and disposed of approximately
81,000 cubic yards of contaminated
mine tailings from the mine site.
sroberts on DSK69SOYB1PROD with NOTICES
area from 1906 until 1958. A
hydropower facility was first
constructed in 1906 at the falls on the
east bank of the Similkameen River,
across from the present powerhouse.
That facility was replaced by the
existing dam and power plant, which
began construction in 1916 and was
completed in 1923. The facility ceased
operations in 1958 for economic
reasons. Most of the project structures,
including the dam, the powerhouse, one
of two penstocks, and the power line,
still exist. Portions of the foundation of
the original power house are still extant,
as well.
At one time, the OTID transported
irrigation water through the Enloe
Project area via a system of canals and
flumes, and some of the structures
remain in place. That system has been
replaced by a pressurized distribution
system, and the point of withdrawal has
been transferred from the Similkameen
Land Ownership
River, 7 river miles upstream of the
The Enloe Project boundary
dam, to Lake Osoyoos, 3.5 miles
encompasses approximately 136.4 acres, southeast of the Enloe Project. The
including the proposed raised Enloe
Oroville Golf Club maintains a pumping
reservoir, river corridor extending
station and pipeline within the project
downstream from the dam 0.25 mile,
area to provide irrigation water for its
and shoreline generally to the 1,055-foot course. With the exception of the golf
elevation contour. The project boundary course facilities, no irrigation facilities
deviates from the 1,055-foot elevation
in the Enloe Project area are currently in
contour to accommodate work that the
use, and there are no other water rights
Okanogan PUD proposes to build a new on the Similkameen River.
access road.
In accordance with the Washington’s
Table 17 shows land ownership
Shoreline Management Act of 1971
within the Enloe Project boundary.
(WSMA), Washington State has
Public agencies own and manage the
designated the Similkameen River and
majority of the land, with the exception associated shoreline areas as shorelines
of a portion of a single parcel
of the state, which are subject to the
(comprising about 0.15 percent of the
provisions of Okanogan County’s
area) held privately.
Shoreline Master Program (Okanogan
Shoreline Program). In Okanogan
TABLE 17—LAND OWNERSHIP WITHIN County, shorelines of the state include
THE PROPOSED ENLOE PROJECT water areas and shorelands extending
BOUNDARY
200 feet landward, on a horizontal
[Source: Okanogan PUD, 2008a]
plane, from the ordinary high water
mark, or the 100-year floodplain,
Land owner
Acres
Percent whichever is greater. The WSMA and
the Okanogan Shoreline Program
BLM ..............................
35.47
26.00
provide for protection of shoreline
Washington DNR ..........
100.76
73.85
Private ...........................
0.20
0.15 functions and values, including
physical and visual access to the
Total ..........................
136.43
100.00 shoreline.
The Okanogan Shoreline Program
Hydropower generation was the
designates all of the shoreline area
primary land use in the Enloe Project
within the proposed Enloe Project
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00063
Fmt 4701
Sfmt 4703
28567
boundary as ‘‘Conservancy.’’ According
to the Okanogan Shoreline Program, the
Conservancy areas contain a resource
capable of sustained yield. Forest
products, hunting, fishing, agriculture,
and many types of recreation are
examples of uses compatible with this
environment. The intent of this
environment is to maintain the existing
character of the shoreline.
Access
Highway access to the Enloe dam area
is via the Loomis-Oroville Road.
Located in a remote rural area, the road
carries little traffic. Traffic counts for
Loomis-Oroville Road range between
112 and 166 average daily trips
according to 2005 traffic counts by
Okanogan County.36 Two access roads
(the Enloe Dam Road and the OTID
Road), connect the Loomis-Oroville
Road to the dam site.
3.3.6.2
Environmental Effects
Recreation
Recreation Management Plan (REC–13)
Okanogan PUD proposes to
implement a Recreation Management
Plan to address recreational issues
associated with the project. The plan
includes 12 measures for recreation and
three measures for safety and access to
the project areas. This Recreation
Management Plan was developed in
coordination with the BLM, NPS,
Washington DNR, the Washington RCO,
and tribal agencies that use lands within
the project area. Lessees that use project
lands for grazing were also invited to
participate in the preparation of the
RMP. The various measures within the
plan are discussed below.
BLM recommends that Okanogan
PUD complete a final Enloe Recreation
Management Plan after consultation
with BLM and the Park Service.
Abandon Portion of Existing Road
Along the Shoreline and Restore
Existing OTID Road To Provide Access
(BOTA–03)
36 An average daily trip is the average number of
vehicles that cross a given surface during a
specified 24-hour period.
E:\FR\FM\17MYN2.SGM
17MYN2
28568
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
Okanogan PUD proposes to restore the
OTID Road by smoothing out bumps,
filling potholes, and adding vehicle
turnouts to allow vehicles traveling in
opposite directions to safely pass one
another. A 2,000-foot-long segment of
the existing access road (Shoreline
Road) located along the east bank of the
impoundment would be abandoned and
closed to vehicle traffic (figure 7). The
roadway would be relocated
approximately 200 feet to the east (up
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
slope) to protect wetlands, reduce
effects on cultural resources (for effects
of project proposals on cultural
resources see section 3.3.8.2, Cultural
Resources, Environmental Effects), and
make the road more accessible during
spring, summer and fall months for all
users. The new roadway segment would
follow the alignment of an old irrigation
canal road.
Large rocks would be placed at both
ends of the abandoned roadway segment
PO 00000
Frm 00064
Fmt 4701
Sfmt 4703
to prevent vehicle access. Pedestrian use
of the abandoned road would be
discouraged until riparian vegetation
planted in that area has become
established. Other existing unimproved
spur roads in the project area would
also be closed to vehicles by blocking
entry points with large rocks. All parties
have agreed that additional design
details on the access road and any
proposed crossing structures would
require consultation.
E:\FR\FM\17MYN2.SGM
17MYN2
Although the access road would not
be plowed on a regular basis during the
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
winter, Okanogan PUD may clear the
road periodically to access project
PO 00000
Frm 00065
Fmt 4701
Sfmt 4703
facilities for maintenance and
operations purposes.
E:\FR\FM\17MYN2.SGM
17MYN2
28569
EN17MY11.006
sroberts on DSK69SOYB1PROD with NOTICES
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
28570
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
Consistent with Okanogan PUD’s
proposal, BLM recommends improving
an existing access road for public access
into the Enloe dam area and abandoning
and relocating a segment of the existing
road that would be subjected to seasonal
flooding under the proposed project
operations. BLM also comments that the
Commission should develop and
analyze an alternative access road
configuration that does not affect the
OTID right-of-way.
sroberts on DSK69SOYB1PROD with NOTICES
Our Analysis
The realignment of a 2,000-foot-long
segment of the existing access road
located along the east bank of the
impoundment would improve
recreation at the project by providing
enhanced access to project lands and
waters. However, it is unclear in
Okanogan PUD’s application whether
the entire public access road (OTID
Road) between the Loomis-Oroville
Road and the proposed project
boundary (approximately 4,000 feet)
would also be maintained to the same
standard. Although, Okanogan PUD
proposes to make improvements to the
entire access road from the LoomisOroville Road to the dam, it does not
intend to bring the entire access road
into the proposed project boundary.
Brining the entire length of the access
road from the Loomis-Oroville Road to
the dam would ensure that the entire
access road is maintained by the
licensee for project operation as well as
recreational access. Incorporating the
4,000-foot stretch of this road including
a 50-foot-wide corridor and turnouts
would add approximately 5.0 acres of
land to the proposed project boundary.
Okanogan PUD’s proposal to
construct an access road is in a portion
of the OTID right-of-way. Okanogan
PUD has consulted with OTID, and
OTID has agreed that the proposed
access road would not conflict with the
OTID’s interest or affect any facilities in
current use. The two parties have come
to an agreement that would allow
Okanogan PUD to construct an
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
acceptable access road to the project
dam. A final agreement would be
negotiated after the licensing decision.
Therefore, we do not see a demonstrated
need for Commission staff to develop
and analyze an alternative access road
configuration at this time.
During the winter season, Okanogan
PUD would not regularly plow or
maintain the access road for visitors but
states it may clear the road periodically
to access project facilities for
maintenance and operations purposes.
Access to project waters was evident
during the site visit in January 2009,
when Commission staff noted that there
was a fisherman downstream of the
dam. Therefore, there is a need for more
periodic maintenance of the roadway in
the winter to allow visitors to project
lands and water. Development of an
established plowing schedule with signs
posted at the beginning of the access
road would have a direct beneficial
effect on winter recreation users by
providing enhanced access to project
lands and waters.
Fence Plan (REC–01)
Safety/Security Fence—Okanogan
PUD proposes to remove the existing
chest-high chain-link fence,
approximately 100-foot-long, that
separates visitors on the east bank of the
river from the dam and the lower
reaches of the impoundment and install
a new fence (at least 6 feet high) along
the upland perimeter of the power
generating facilities and tailrace (figure
8). The fence would be constructed of
small mesh chain-link material finished
in traditional galvanized zinc or coated
in brown vinyl. A top rail would be
installed to keep the fence from sagging.
Authorized personnel would have keys
to access selected locked gates. Signs
warning the public about high voltage
and other hazards would be posted on
appropriate fence locations.
Cattle Fencing—Okanogan PUD
proposes to install an 8,000-foot-long
cattle fence along the eastern boundary
of the project boundary from Shanker’s
PO 00000
Frm 00066
Fmt 4701
Sfmt 4703
Bend to Enloe dam. At its northern end,
the cattle fence would tie in to a rock
outcrop just south of the apex of
Shanker’s Bend and an access point
through the fence would be provided for
pedestrians. Cattle would have access to
the river just upstream from the rock
outcrop. At its southern end, the fence
would tie in to another rock outcrop just
east of the proposed powerhouse. The
configuration of the cattle fence would
be consistent with BLM guidelines for
livestock fencing installed in areas
inhabited by common ungulate species.
The fence would consist of no more
than four, well-stretched horizontal
wires with the top wire no more than 42
inches above the ground. The other
wires would be spaced evenly no less
than 8-, 16-, and 24-inches below the
top wire.
The grazing lessee has an existing
water right to withdraw water from the
river for stock watering purposes.
Okanogan PUD proposes to install a
stock watering tank approximately 300
upslope from the river, just inside the
project boundary and north of the
proposed recreation site, as an
alternative source of drinking water for
all grazing cattle with rights to this area.
The tank would be supplied with water
from an existing pump and waterline
located on the east bank of the river.
The pump and waterline are owned by
one of the grazing lessee Okanogan PUD
would monitor the need to install a
security fence around the pump and
electrical power system to discourage
vandalism and theft if they become
problems.
A cattle guard would also be installed
where the cattle fence crosses the main
access road to the dam. The cattle guard
grid would be designed to bear the
maximum expected vehicle load (which
may include construction equipment). A
gate (accessible only by authorized
personnel) would be installed where the
cattle fence crosses Enloe Dam Road.
BILLING CODE 6717–01–P
E:\FR\FM\17MYN2.SGM
17MYN2
28571
BILLING CODE 6717–01–C
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00067
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
EN17MY11.007
sroberts on DSK69SOYB1PROD with NOTICES
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
28572
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
BLM recommends non-barbed wire be
used near the recreation area or the
addition of crossings as needed for safe
access to project lands and waters. In
addition, BLM recommends prior to
building the proposed Enloe Project
fence, Okanogan PUD develop and
implement a plan to provide water
outside the fenced area for the use of
livestock that are authorized to graze on
BLM-administered public lands within
and adjacent to the Enloe Project.
Our Analysis
Three ranchers have rights to graze
cattle on BLM land within the proposed
project boundary. Because there are no
fences to limit or control livestock
access, cattle freely roam the entire site.
The grazing lessee has an existing water
right to withdraw water from the river
for stock watering purposes. Cattle
access the river for drinking water
wherever the topography allows.
Okanogan PUD’s Fence Plan
implemented in coordination with its
vegetation resources management plan
would be consistent with BLM’s
recommendations. The proposed fence
configuration would protect wildlife
and vegetation within the project area
while still allowing access to recreation
users. Injury to fawns and yearling deer
who often try to move between lower
fence wires would be reduced and adult
deer could easily jump a fence with a
top wire 42 inches above the ground.
However, continued consultation with
BLM and lessees who have the water
rights would ensure the fence meets
BLM standards and cattle are still able
to access water within the project area.
In addition, Okanogan PUD’s proposal
to install a stock watering tank north of
the proposed recreation area would
provide an alternative source of
drinking water for all grazing cattle with
rights to this area. A written agreement
to provide water for all three lessees’
cattle at this proposed watering site
would also ensure all three ranchers’
cattle would have an alternative source
of water.
Barriers to Restricted Areas—
Okanogan PUD proposes to install
locked gates and rock barricades to limit
vehicle access by recreational users. The
proposed barriers and access restrictions
are described below:
• Locked metal gates would be
installed at the upper end of Enloe Dam
Road to prevent unauthorized vehicles
from using the road. The road is very
steep and is not maintained for
passenger vehicles. Visitor access to the
project area would be via OTID Road.
Because Enloe Dam Road is a county
road, Okanogan PUD would work
closely with Okanogan County on plans
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
to close the road to public vehicle
access. Pedestrians would be able to
walk along the road; however, they
would need to use the pedestrian access
at the north end of the recreation area
to access the new recreation site and
areas below the dam.
• Okanogan PUD staff and other
authorized personnel would have keys
to the locked gates. Okanogan PUD does
not propose to install a gate at the
entrance to the main access road off
Loomis-Oroville Road.
• A locked metal gate would also be
installed at the intersection of the oneway loop road within the proposed
recreation site and the new access road
to the area below the dam. Only
Okanogan PUD staff and authorized
personnel would have keys to open the
gate. Large rocks spaced approximately
3 feet apart would be used to prevent
visitors from attempting to drive around
the gate. Visitors (including those
portaging rafts, canoes, kayaks and
mining equipment) would be able to
access the area below the dam by using
a trail to be located near the west end
of the gate.
Consistent with Okanogan PUD’s
proposal, BLM also recommends
installing barricades and fencing to
prevent unauthorized access to closed
areas.
Our Analysis
Finalizing and implementing the
Fence Plan after consultation with BLM
and stakeholders as part of the proposed
Recreation Management Plan would
improve prevent damage to wetlands
and proposed riparian/wetland
mitigation sites by preventing cattle
from entering the proposed recreation
site and keeping recreation users out of
sensitive vegetative areas. A key
schedule developed by Okanogan PUD
in consultation with stakeholders would
also ensure the appropriate entities had
keys to access project facilities.
Recreation Access Below Enloe Dam
(REC–02)
The construction of the new power
generation facilities would require
upgrading or replacing portions of the
abandoned road, which currently
provides foot access to areas below
Enloe dam, including the rocky area
above the falls and the lower reaches of
the Similkameen River.
The area downstream of the dam
contains dispersed trails made by
visitors who access different areas
below the dam depending on the
activity they are taking part in (fishing,
hiking, photography, mining, and
kayaking/rafting/canoeing). Okanogan
PUD proposes to designate and improve
PO 00000
Frm 00068
Fmt 4701
Sfmt 4703
a single trail for public recreation access
to the river below Enloe dam. Okanogan
PUD would allow hikers and visitors
portaging watercraft or recreational
mining equipment (on foot) to use the
improved access road between the
recreation site and the powerhouse.
Okanogan PUD also proposes to
improve approximately 350 feet of the
existing trail located between the access
road to the powerhouse and the
southernmost interpretive display. The
trail would be widened to
approximately 6 feet, leveled, smoothed,
and surfaced with gravel to provide
barrier-free access to all users.
In addition, Okanogan PUD proposes
to make limited improvements to an
existing footpath that extends between
the trail described above and the edge
of the river. Large obstacles would be
moved or avoided, and the path would
be widened and smoothed where
possible. The path would also be
marked to increase its visibility and
enhance public safety. Other existing
footpaths leading from the upper trail to
the river’s edge would be closed by
placing rocks at the existing entry points
to discourage use.
BLM recommends providing
recreation access below Enloe dam and
rebuilding the footbridge.
Our Analysis
Options for providing access to the
river corridor below Enloe dam
(including portage options) are limited
by site factors (including steep, rocky
terrain on both sides of the access
corridor and the confined river
channel). Generation facility design and
security requirements also limit options
for improving access to areas below the
dam. Okanogan PUD proposes to
designate and improve a single trail
within the proposed project boundary
for public recreation access to the river
below Enloe dam. The improved path
would provide easier access to those
carrying kayaks or prospecting
equipment and provide overall
enhanced access. Anglers would also be
able to access the popular fishing areas
below the falls using the improved
footpath. The proposed improvements
would enhance access to lands and
waters downstream of the dam and
provide for the effective launching of
boats below the falls.
At this time, Okanogan PUD does not
propose to provide public access to the
west bank of the river as a part of the
Recreation Management Plan. Okanogan
PUD states it would be receptive to
proposals to restore the footbridge
across the river if a proponent and
source of funding were to come forward.
Okanogan PUD would continue to
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
coordinate with federal and state
agencies and local historical societies to
explore funding sources for restoring the
footbridge (see Land Use ‘‘Nonmotorized Trails and West Side River
Access’’ for a full analysis).
Transfer Ownership of Trestle Bridge
(REC–03)
Okanogan PUD proposes to continue
collaboration with the County towards
development of the County’s proposed
12.5-mile non-motorized public access
trail on the railroad bed along the west
side of the Similkameen River between
Oroville and Nighthawk. This trail is
currently under construction with the
first 3.5 miles having been completed,
running from the City of Oroville to a
scenic view of Similkameen Falls at
around RM 8.5, which lies just outside
of the lower end of the proposed project
boundary. Okanogan PUD has provided
easements through its property to the
County with the following conditions:
(1) The first phase of the trail would
terminate prior to reaching the
downstream end of the project
boundary—that is, the first phase of the
trail would not run adjacent to the
project boundary; and (2) Okanogan
PUD retains the right to use the bridge
and the railroad bed to reach the dam
site for project maintenance and
operations.
Okanogan PUD also plans to
coordinate with the Department of
Public Works regarding road approaches
and signage.
sroberts on DSK69SOYB1PROD with NOTICES
Our Analysis
Okanogan PUD transferred ownership
of the trestle bridge to Okanogan County
for the development of a future public,
non-motorized, recreational use trail.
The rail would provide a beneficial
effect to users who would be able access
to the west side of the Similkameen
River and Enloe Project area for possible
informal, dispersed recreational
activities.
Improvements to Existing Informal Boat
Ramp (REC–04)
Okanogan PUD proposes to install a
new formal boat launch in
approximately the same location as the
primitive put-in/take-out area now used
by recreational boaters on the reservoir.
The boat launch access road would be
accessed from the loop road at the new
recreation site. The road to the boat
ramp would be approximately 14 feet
wide and surfaced with gravel. The road
would be accessible to both vehicles
with trailers and people carrying
watercraft on foot. The boat ramp would
be constructed of gravel geoweb
materials or concrete planks. Changing
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
water levels would be accounted for in
the design of the ramp. If necessary, a
trash deflector would be installed to
protect the boat ramp from floating
debris. A vehicle and trailer parking
area would also be located in the new
recreation site.
Rock barricades would be installed
along both sides of the access road to
the boat ramp to prevent vehicles from
entering the adjacent woodland area.
The rock barricade would consist of
three-man rocks 37 placed
approximately 3 feet apart.
BLM recommends improving the
existing informal boat ramp at Enloe
dam, consistent with Okanogan PUD’s
proposal.
Our Analysis
These improvements would facilitate
access for current and future recreation
use at the project. By implementing the
proposed enhancements in areas where
recreational use is most concentrated,
within 1.5 miles of the dam, recreation
access at the project would be increased
and areas for the effective launching and
retrieving of boats would be improved.
Clean Up and Restore Wooded Area on
East Bank (REC–05) and Remove
Existing Trash and Conduct Annual
Cleanup (REC–07)
Okanogan PUD proposes to remove
existing trash from the following areas:
(1) the wooded area on the east bank of
the reservoir, just above Enloe dam; (2)
the OTID Road access leading from the
Loomis-Oroville Road to the dam site;
and (3) unimproved beaches within the
project area, including Shanker’s Bend
and area below the dam.
Okanogan PUD proposes to clean up
and restore the wooded area on the east
bank of the impoundment, just
upstream of the dam on BLM land, to
enhance visitor experience. Clean up
would include removing trash, auto
bodies, and other debris from within the
wooded area. Restoration would include
planting native vegetation appropriate
to the site in areas that have been
degraded by vehicle use and informal
camping.
Okanogan PUD proposes to
coordinate with user groups and area
civic organizations to arrange an annual
clean-up to remove trash and dumped
materials that accumulate within the
project boundary. Signs stating
Okanogan PUD’s ‘‘Pack it In/Pack it Out’’
policy would be installed at the
entrance to the OTID Road off LoomisOroville Road and at a conspicuous
37 A three-man rock is defined as a rock weighing
750–3,500 pounds and measuring approximately 24
to 36 inches on each side.
PO 00000
Frm 00069
Fmt 4701
Sfmt 4703
28573
location within the new recreation site
upstream of the dam.
Okanogan PUD personnel would visit
the site several times each month, and
if trash or illegal dumping exist, they
would be removed as soon as practical.
BLM recommends cleaning up and
restoring the wooded area on the east
bank as well as removing existing trash
and conducting annual cleanup events
consistent with Okanogan PUD’s
proposal.
Our Analysis
The proposed clean-up plan for the
wooded area on the east bank of the
river and removal of existing trash and
an annual clean up plan would address
the litter and sanitation concerns
expressed by the visitors in response to
Okanogan PUD’s recreational surveys.
The proposed plan would have a direct
beneficial effect on the recreational
experiences of visitors by providing
annual litter pickups, site checks on a
regular basis, and signage to encourage
users to carry-in/carry-out.
Develop an Interpretive Publication
(REC–06)
Okanogan PUD proposes to develop
an interpretive publication that would
include a map of the project area in
consultation with Okanogan County, the
Greater Columbia Water Trail Steering
Committee, and other interested parties.
The interpretive publication would
identify the locations of developed
recreational facilities and inform
visitors of appropriate locations to park,
load and unload recreational
equipment, portage, and camping areas.
The map would include recreation sites
and access areas and be suitable for
printing as a stand-alone piece that
could be posted on an information
board.
The design of the publication would
follow the style guidelines that would
be developed in the Aesthetic Resources
Plan (see section 3.3.7 Aesthetic
Resources) and be consistent with other
interpretive signs (REC–11) and
information boards (REC–12) at the
project.
Okanogan PUD’s proposal is
consistent with BLM’s recommendation
to develop an interpretive publication.
Our Analysis
Finalizing and distributing an
interpretive publication after
consultation with stakeholders as part of
the proposed Recreation Management
Plan would establish a consistent
method to provide visitors with
information about the project and
recreation sites within the project area.
Development of such a publication
E:\FR\FM\17MYN2.SGM
17MYN2
28574
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
would increase public safety and
awareness at the project.
Develop Parking Area, Including Vault
Toilet and Access Road (REC–08),
Install Picnic Tables (REC–09), and
Develop Primitive Campsites (REC–10)
sroberts on DSK69SOYB1PROD with NOTICES
Okanogan PUD proposes to develop a
one-acre recreation site located in a
relatively flat area next to the riparian
woodland just upstream from the dam.
Okanogan PUD chose this site because
it is heavily disturbed and would not
affect known cultural resources in the
area. The design concept for the
recreation site is a one-way access road
that would circulate traffic in a counter
clock-wise direction. The access road
would be approximately 14 feet wide
and would be surfaced with gravel. A
gravel surfaced parking area able to
accommodate up to five standard
vehicles and two vehicles with trailers
would be located on the southern half
of the site. Large rocks would be used
as needed to direct traffic, protect
facilities, and designate the parking
areas. Due to space and topographical
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
limitations, vehicles with boat trailers
would be required to pull in and back
out of the parking area. One vault toilet
would be constructed for recreational
users at the south end of the parking
area.
Okanogan PUD also proposes to
install picnic tables in two areas on the
east side of the new recreation site near
the parking area. The areas would be
designated for day-use picnicking,
although overnight campers would be
able to use the picnic facilities as well.
The first site (Picnic Area I) would be
located in the southeast corner of the
recreation site outside of the loop road
(figure 9). This area is slightly wooded
providing natural shade and views
toward the dam. Two tables would be
spaced approximately 25 to 50 feet from
each other to provide privacy. The
second picnic area (Picnic Area II)
would be located in the northeast corner
on the outside of the loop road. This site
provides overlooking views of the
placid water of the reservoir. Two
picnic tables would be clustered
together to accommodate larger groups.
PO 00000
Frm 00070
Fmt 4701
Sfmt 4703
Parking for both picnic areas would be
provided in the parking area located at
the south end of the recreation site
inside the loop road (Figure 9).
Okanogan PUD would develop four
primitive campsites near the parking
and picnic areas described above. Each
campsite would be approximately 25
feet wide and 50 feet long. The
campsites would provide for pull-in
parking and include ample space to
accommodate a tent site. Rock barriers
would be installed to serve as curbstops
and define the boundaries of individual
campsites. A picnic table and steel fire
ring would be provided at each
campsite and be surrounded by 3 feet of
gravel in all directions to reduce fire
danger. Campsites would be available
on a first-come, first-served basis and
overnight stays would be limited to a
maximum number of 14 consecutive
stays. Okanogan PUD’s overnight stay
policy would be clearly posted on an
information board at the recreation site
and at each campsite. Campsites would
be designed to provide barrier free
access to all users.
E:\FR\FM\17MYN2.SGM
17MYN2
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00071
Fmt 4701
Sfmt 4725
E:\FR\FM\17MYN2.SGM
17MYN2
28575
EN17MY11.008
sroberts on DSK69SOYB1PROD with NOTICES
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
28576
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
Okanogan PUD proposes it would,
either directly or indirectly through a
formal partnership, be responsible for
maintaining recreational assets in an
acceptable condition through routine
maintenance, repair and replacement.
Recreation features would be
inspected during normal maintenance
visits and any recreation features that
are identified as broken or in need of
repair would be repaired or replaced.
The repair of recreation features, which
could include the replacement of certain
items, would be conducted on an asneeded basis as soon as practical after
being identified through regular facility
inspections.
BLM recommends developing a
parking area, installing a vault toilet,
installing picnic tables, and developing
primitive camp sites at the recreation
site consistent with Okanogan PUD’s
proposal. BLM also recommends that
Okanogan PUD provide recreation site
grounds maintenance and consult with
BLM to develop a schedule for site
maintenance, facility replacement,
modifications, or upgrades to the
administered recreation sites at Enloe
dam and Miner’s Flat. In addition, BLM
recommends Okanogan PUD clear and
keep clear to an adequate width all
lands along roads and trails and dispose
of all temporary structures, unused
timber, brush, refuse, or other material
unnecessary for the purposes of the
Enloe Project that result from
maintenance, operations, or alteration of
the Enloe Project facilities. Trees that
have died or had portions die should be
removed or pruned to minimize hazards
to the public. Prior to removal, trees
would be evaluated for wildlife value
and a determination made of the
appropriate action. Trees that have been
removed should be replaced by planted
seedlings of species native to the area.
Our Analysis
The development of this small
recreation area is consistent with the
low level of current and anticipated use.
Survey results indicate that use of the
Enloe Project Area is estimated at 1,378
user days during the June 1 to October
15 survey period.
Okanogan PUD developed a
Recreation Needs Assessment, dated
April 2009. The Recreation Needs
Assessment projected the needs and
capacity data for the project area
through the year 2050 using peak use
estimates.
The peak day-use projection for
campers visiting the survey area in 2030
under Okanogan PUD’s high growth
scenario is 15, which would be in
balance with the capacity available at
the project site once the campsites are
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
developed. The 2050 peak day demand
is anticipated to be 38 percent of the
total survey area capacity, including the
primitive campsites available 3 miles
upriver at Miner’s Flat. This suggests
that peak day demand for camping
facilities at the project would be
exceeded in 20 to 30 years. Thus, it
appears there would be sufficient
capacity to accommodate anticipated
future demand for camping in the area
of the project.
The proposed sites would be
appropriate given current recreational
use at the project. Recreation access
would be improved at the project by
providing formal campsites and picnic
areas in the areas where recreational use
is concentrated. The addition of a vault
toilet would ensure that human waste is
handled in a manner that would protect
environmental and aesthetic resources.
The addition of picnic tables and
primitive campsites would assist in
defining areas for recreational activity
and would concentrate recreational use
in these intended areas. This would
reduce the current adverse effects on
surrounding natural and cultural
resources from recreational activities
that could cause ground compaction,
vegetation loss, and erosion. Similarly,
the designation of parking spaces for
recreational users would reduce impacts
on natural and cultural resources.
Although grounds maintenance is
already included in Okanogan PUD’s
day-to-day operation and maintenance
activities finalizing the Recreation
Management Plan after consultation
with stakeholders and filing the plan
with the Commission for approval
would establish a maintenance protocol
to provide visitors with clean and safe
recreation facilities.
Interpretive Signs and Information
Board (REC–11 and REC–12)
Okanogan PUD proposes to place at
least three interpretive signs (display
panels) in areas accessible to visitors at
the project. The purpose of these panels
would be to develop visitor
understanding of the cultural, historical,
and biological resources in the project
area and enhance visitor experience.
Sign designs and locations would be
consistent with those specified in the
HPMP and would be finalized in
consultation with BLM and the CRWG
during the design phase.
The preliminary list of proposed sign
locations and topics are as follows: (1)
One display panel at or near the old
bridge tower, below the falls, the focus
of which would be the history of power
generation at the site; (2) one display
panel at or near the 1906 powerhouse
foundation at the end of the new access
PO 00000
Frm 00072
Fmt 4701
Sfmt 4703
road, the focus of which would be
native legend about the falls and fish;
and (3) one display panel near the
parking and picnic area, which would
have smaller versions of the two other
panels and interpretive information
about the environment (e.g., wetland,
riparian, and shrub-steppe functions
and values) around the project area.
The exact locations of the signs may
change slightly to ensure that they do
not obstruct views of other project
features and are placed in appropriate
locations relative to the features being
interpreted.
Okanogan PUD also proposes to
develop an information board in
addition to the interpretive signs. At a
minimum, the information board would
include a map showing recreational
features in the project area, visitor rules,
and safety information.
BLM recommends the development of
the interpretive signs and an
information boards consistent with
Okanogan PUD’s proposal.
Our Analysis
Finalizing and implementing the plan
for interpretive signage and information
board after consultation with BLM and
the CRWG, as part of the proposed
Recreation Management Plan, would
enhance the recreational experience by
providing visitors with information
about the project as well as important
safety messages. In its proposed
Recreation Management Plan, Okanogan
PUD identified likely locations, themes,
stories, objectives, and options for
structures and sign displays within the
project boundary. Because Okanogan
PUD states that specific displays would
be subject to alteration based on the
outcome of consultation, a final
Recreation Management Plan filed with
the Commission for approval would
ensure that the proper consultation has
occurred and that the final site-specific
information could be assessed properly.
Additional Measures To Improve Public
Safety
In the interest of promoting public
safety for all those who participate in
recreational activities within the project
area, Okanogan PUD proposes following
additional safety measures.
Maintain Warning Signs, Safety Cable
and Grab Ropes (SAFETY–01)
In consultation with BLM, Park
Service, FWS, Washington RCO,
Washington PC, Washington DNR,
CRWG, Washington DFW, Washington
DOE, Okanogan County Planning and
Development Office, the Colville,
Greater Columbia Water Trail Coalition,
Pacific Northwest Trail Association,
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
Washington Water Trails Association,
Wenatchee Valley Museum and Cultural
Center, and grazing lessees, Okanogan
PUD proposes to install a 1,500-foot
long canoe/kayak portage trail. Paddlers
would be able to identify the portage
trail by signs informing boaters and
paddlers where take-outs are located.
Portage signs would be large enough to
direct canoeists and kayakers to safe
take-out locations.
Okanogan PUD also proposes to
continue to maintain the existing signs
and system of safety cables and grab
ropes above the dam. The existing
system of safety cables and grab ropes
is located more than 300 feet upstream
of Enloe dam and the proposed intake
channel at a narrow point in the
reservoir. The cables and grab ropes
serve as a means of restraint and escape
for people who are approaching the
spillway and are not able to exit the
water at the boat launch as directed by
instructional signs and warnings.
Finally, a log boom would be placed
at the entrance to the intake channel to
serve as a restraining barrier for any
boaters or swimmers approaching the
intake channel.
sroberts on DSK69SOYB1PROD with NOTICES
Allow Limited Public Access to the
Project Area During Construction
(SAFETY–02)
Okanogan PUD proposes to allow
limited public access to the project area
during the 2.5-year construction period.
Public access would be limited to areas
upstream of the dam, outside of the
construction and staging areas. Access
to the primitive put-in/take-out area in
the riparian wooded area would be
available during most of the
construction period. During periods
when the put-in/take-out area would not
be available for use, a sign would be
placed upstream to alert boaters to use
an alternate take-out location.
Because of safety and liability
concerns, the area along the east bank of
the river (extending approximately 250
feet above the dam and 550 feet below
the dam), including all areas of active
construction and materials stockpiling,
would be off-limits to the public until
major construction activities are
completed. The off-limits area would be
completely enclosed by a temporary
chain link security fence. Signs would
be erected at the entrance to main access
road, alerting visitors that construction
activities are taking place and that
portions of the site may be closed to
public use. Okanogan PUD would
continue regular site inspections during
periods of active construction.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
28577
being met. Any updates to the RMP
would be made after consultation with
BLM and filed for final Commission
approval.
Okanogan PUD proposes to
BLM recommends that Okanogan
coordinate with BLM, the state of
PUD conduct annual and periodic
Washington, and private land owners,
recreation plan monitoring. Within 90
as appropriate, to identify options for
days of license issuance, BLM
preventing public access to the old
recommends Okanogan PUD develop an
powerhouse. Options include installing Annual Visitor Use and Monitoring
fencing and/or gates at key access
Form, in consultation with BLM. This
locations on the west bank of the river
form would be used to record visitor
between the powerhouse and the old
use; maintenance, both performed and
railroad. Warning signs with the words
needed; and report on the recreation
‘‘Danger’’ and ‘‘No Entry’’ could also be
facilities and recreation use within the
installed at key locations. The fencing
Enloe Project area. The report would be
and signage could remain in place until submitted to BLM by December 1 each
another party has assumed ownership
year for review and approval.
and management of the powerhouse or
Every 6 years, starting with the
until the powerhouse and penstock are
issuance of an Enloe Project license,
demolished and removed. Okanogan
Okanogan PUD should review and
PUD would allow 5 years before the
evaluate information regarding
powerhouse is demolished to identify
recreation needs and report recreation
potential partners to restore the old
use levels. Use levels would be
powerhouse for interpretive
documented by means of site visits and
opportunities (see section 3.3.8, Cultural staff observations. Okanogan PUD
Resources, for more discussion of this
would also conduct monitoring, using
issue).
the Commission’s FERC Form 80.
BLM recommends improving public
BLM recommends that every 5 years,
safety by maintaining warning signs,
Okanogan PUD review, and if necessary,
safety cables, and grab ropes, allowing
update the final Recreation Management
limited or controlled public access to
Plan. If the Form 80 monitoring, the
the Enloe Project area during
Annual Visitor Use and Monitoring
construction, and preventing or
Form, or other sources identify issues,
appropriately managing public access to problems, or significant changes to
the old powerhouse.
recreational use levels, types, or other
issues, Okanogan PUD would update or
Our Analysis
revise the final Recreation Management
Okanogan PUD has a responsibility
Plan to contain information on
for public safety and ensuring public
managing and providing adequate
access under parts 12 and 2.7 of the
facilities to meet the needs of the
Commission’s regulations. The
current and projected recreation use.
proposed measures listed above to
Significant change would include
improve public safety are reasonable
exceeding the project’s recreation
and appropriate to ensure public safety
facility capacity as defined by the
at the project. Public safety at the
Commission’s FERC Form 80 updates.
proposed new recreation site and other
Our Analysis
areas within the project area is also
Okanogan PUD’s proposed
under the jurisdiction of law
recreational use monitoring and
enforcement agencies, including the
assessment of recreation-related effects
Okanogan County Sheriff’s Office. It
on lands within the project boundary as
would be appropriate for Okanogan
a component of the proposed Recreation
PUD to also coordinate with the local
Management Plan would allow
county sheriff’s office and other
Okanogan PUD and stakeholders to
emergency response entities to ensure
that an appropriate level of public safety consider measures to address
recreational use, including dispersed
exists within the project area.
use, over the term of a license. It would
Recreation Management Plan (REC–13)
be beneficial for Okanogan PUD, in
and Monitoring
coordination with filing of the FERC
Form 80, to file every 6 years a
Okanogan PUD proposes to review,
Recreation Monitoring Report
update, and/or revise the RMP if the
summarizing the recreation monitoring
FERC Form 80 monitoring indicates
results and any recommendations for
significant changes in recreation use
future recreation management at the
and or conditions or substantial
project. The monitoring would provide
differences in uses versus capacity of
recreation facilities. Changes would also a mechanism for which recreation
facilities could be maintained and
be implemented if monitoring results
improved over the term of a license.
indicate resource objectives are not
Identify Options for Preventing Public
Access to the Old Powerhouse
(SAFETY–03)
PO 00000
Frm 00073
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
28578
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
Although monitoring recreation on an
annual basis, as proposed by BLM,
would also be beneficial, this amount of
monitoring seems excessive due to the
low amount of current recreational use
at the project.
Coordination with other stakeholders,
such as the Washington SHPO, BLM,
NPS, Washington DNR, and Washington
ROC would ensure that other
environmental resources are
appropriately considered when
implementing any changes or new
recreation measures into the Recreation
Management Plan.
River Access Point at Miner’s Flat
BLM recommends that Okanogan
PUD place the Miner’s Flat area within
the Enloe Project boundary. Currently
some visitors use Shanker’s Bend as a
boat take out to avoid paddling the flat
water above the dam. BLM states that
river visitors who take out at Shanker’s
Bend to avoid the flat water would now
take out at Miner’s Flat due to the
increase in reservoir area as proposed.
BLM recommends Okanogan PUD make
recreation improvements to the Miners
Flat area to accommodate future
increases in recreation needs at this
location. BLM proposes that recreational
development at Miner’s Flat incorporate
the following: (1) Improve the existing
entrance road, road through the site, and
parking areas; (2) improve water access
for launching and landing boats; (3)
install an information kiosk with a map;
(4) establish primitive campsites,
including picnic tables and steel fire
rings; (5) install a vault toilet; and (6)
develop drawings showing the location
of site improvements and consult with
them on this plan.
sroberts on DSK69SOYB1PROD with NOTICES
Our Analysis
Currently, there is no suitable area for
the development of a take-out within
Okanogan PUD’s proposed project
boundary. It is likely that the raised
reservoir level would result in more
paddlers taking out at Miner’s Flat to
pass up the increased flatwater area.
Since an informal access already
exists at Miner’s Flat and the area is flat
enough to accommodate a take-out area,
it would be reasonable to develop a
take-out within this location with minor
upgrades made to the access road to the
take-out. However, because Okanogan
PUD has proposed to develop
formalized campsites within the project
boundary and two campgrounds already
exists within two to five miles of the
project, developing campsites at Miner’s
Flat would not be justified.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
Land Use
Project Boundary
The Enloe Project boundary
encompasses approximately 136.4 acres
and includes Enloe reservoir, the
corridor for the new access road
proposed by Okanogan PUD, the
location identified for the placement of
boulder clusters in the riverbed (about
2.5 miles upstream of the dam) and the
river corridor extending downstream
from the dam 0.25 mile. Okanogan PUD
does not propose to place additional
lands associated with the proposed sidechannel enhancement site, the
restoration of the existing OITD road,
and Miner’s Flat within the project
boundary.
Our Analysis
Okanogan PUD’s proposal to enhance
existing side channel to improve
spawning, rearing, and summer thermal
refugia would be a mitigation measure
for the protection of environmental
resources. This proposed facility would
add approximately 0.75 acres of project
lands approximately 5 miles
downstream of the dam necessary for
project operation. These enhancements
would need to be maintained over the
license term and, therefore, it would be
appropriate to include these lands
within the project boundary for the
purpose of operation and maintenance
of the proposed Enloe Project.
In addition, all but about 4,000 feet of
the existing access road is currently
proposed to be located within the
project boundary. Because of the
proposed modifications of the existing
access road and the fact that the road is
the only access route to the project, it
is appropriate to include the entire
access road within the project boundary.
This would add approximately 5 acres
of land to the project area.
Finally, the provision of an upgraded
take-out area at Miner’s Flat is justified
due to the potential increase in
recreational use as a result of the raising
of the impoundment from current levels
and anticipated increases in recreational
use of the area over time. The inclusion
of the recommended Miner’s Flat takeout area, would be necessary for project
purposes, such as recreation, shoreline
control, or protection of environmental
resources. This would add
approximately one acre of land into the
project boundary.
Law Enforcement, Emergency Services,
and Fire Prevention
BLM recommends Okanogan PUD
develop and implement, after
consultation with BLM, a Law
Enforcement, Fire, and Emergency
PO 00000
Frm 00074
Fmt 4701
Sfmt 4703
Services Plan. The plan would include
provisions for: (1) Coordination of and
funds for law enforcement, fire, and
emergency services personnel; (2) law
enforcement presence, enhanced
emergency communication and
response procedures, public safety and
security, protection measures for natural
resources, recreation resources, and
heritage resources; (3) an emergency
telephone at the site; (4) an assessment
of the need for additional law
enforcement, including funds for
additional personnel, to patrol BLMadministered lands; (5) a description of
fire prevention and protection on BLMadministered lands to include: (a) An
identification of hazard abatement
procedures, (b) a notification process,
(c) an identification of agencies to
respond to fire reports, and (d) a process
for reclaiming and/or rehabilitating
burned lands; (6) coordination with
BLM to evaluate the need for fire
protection on BLM-administered lands,
including monitoring and evaluating of
man-made fires that affect BLMadministered lands; and (7) all costs
provided by Okanogan PUD, if
monitoring demonstrates an increased
need for fire prevention, detection, and
suppression.
Our Analysis
BLM indicated that increased
recreational use in the Enloe Project
area can lead to adverse effects on
environmental and cultural resources,
an increased risk of fire, and an increase
in vandalism that will require law
enforcement and emergency or fire
response. As previously discussed,
Okanogan PUD proposes to remove
existing trash from defined areas on
BLM land, conduct annual clean up
events, and conduct project facility site
reviews. Further, Okanogan PUD
proposes to implement its Recreation
Management Plan that contains
measures to minimize conflicts between
recreational use and associated effects
on environmental resources. Overall,
these measures, along with additional
staff-recommended measures, would
protect the environmental, recreational,
and cultural values at the Enloe Project.
Providing funds for law enforcement,
fire, and emergency services personnel
is not a specific measure to protect and
enhance fish and wildlife resources. The
Commission has made clear that it is
concerned with protecting resources
and uses at the project rather than
funding personnel.38 However, a fire
suppression program to rehabilitate
38 See Settlements in Hydropower Licensing
Proceedings Under Part I of the Federal Power Act,
116 FERC § 61,270 (2006).
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
lands subject to wildfire and to reduce
fuel loads to prevent wildfire on project
lands and adjoining wildlife areas could
protect and enhance terrestrial resources
affected by the construction, operation,
and maintenance of the Enloe Project. A
fire suppression program could include
signage at recreation sites describing the
hazards and costs of wildfire and
undertaking habitat rehabilitation
efforts, such as replanting with
perennial grasses to reduce fuel loads.
Building Removal
BLM recommends that Okanogan
PUD remove two small, deteriorating
buildings at the north end of the
proposed Enloe Dam Recreation Area.
BLM states these buildings are
deteriorating, unsafe to enter, marked
with graffiti, and pose an unattractive
nuisance to visitors to the site. In
response to BLM, Okanogan PUD states
that one of two small structures on the
north end of the proposed Enloe dam
recreation area is owned by a private
landowner that maintains a lease with
BLM. Okanogan PUD states it is not in
a position to remove this structure,
however, it will take reasonable
measures to secure existing structures
from unauthorized entry.
sroberts on DSK69SOYB1PROD with NOTICES
Our Analysis
Licensees are required to ensure that
all reasonable precautions are taken to
ensure that the construction, operation,
and maintenance of structures or
facilities on project lands occur in a
manner that protects the scenic,
recreational, and environmental values
of the project.
If the deteriorating pump house
structure is unsafe and does not serve
project purposes, it would be
appropriate for Okanogan PUD to
maintain the building to a point where
it is safe or remove it from the project
boundary. Currently, it does not appear
that these two buildings are being used
for project purposes.
Non-Motorized Trails
BLM recommends Okanogan PUD
support the development of the
Similkameen Rail Trail, a cooperative,
non-motorized public access trail along
the old railroad grade from Oroville to
Nighthawk, as a segment of the Pacific
Northwest National Scenic Trail. BLM
also recommends that Okanogan PUD
support the development of the
Similkameen portion of the Greater
Columbia Water Trail. BLM
recommends that Okanogan PUD
consult with BLM, FWS, Park Service,
Water Trail Committee, Pacific
Northwest Trail Association, and
Okanogan County to identify water and
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
trail access points that are likely to
become popular as the trails are
developed in this area. BLM also
recommends that Okanogan PUD
rebuild the footbridge across the
Similkameen River. The footbridge
would provide the only foot access from
the east side of the river (between the
trestle bridge two miles downstream of
the dam and Nighthawk six miles
upstream) to the trail opportunities on
the west side of the river.
Okanogan PUD states its recreation
development proposal was crafted in
consultation with local stakeholders,
and local stakeholders did not identify
that the footbridge providing public
access to the west bank of the river was
needed. Okanogan PUD states this is a
request for an enhancement that goes
beyond the need to mitigate project
impacts. However, Okanogan PUD has
indicated that it is receptive to
proposals to restore the footbridge
across the river if a proponent and
source of funding were to come forward.
Okanogan PUD would continue to
coordinate with federal and state
agencies and local historical societies to
explore funding sources for restoring the
footbridge.
Okanogan PUD states it supports the
development of the Greater Columbia
Water Trail as evidenced by the
measures in the Recreation Management
Plan that are supportive of and
complementary to the goals and
objectives of Greater Columbia Water
Trail. Okanogan PUD states that it has
demonstrated support for the
Similkameen Rail Trail by transferring
ownership of the trestle bridge to
Okanogan County for use in developing
the Similkameen Connector Trail,
which has become part of the
Similkameen Rail Trail and the Scenic
Trail.
Our Analysis
Consultation with Okanogan PUD in
the development of the Similkameen
Rail Trail and the Similkameen portion
of the Greater Columbia Water Trail
within the project vicinity would ensure
both planned trails are implemented in
a manner consistent with the project.
Rebuilding the footbridge across the
Similkameen River downstream of the
dam would provide access to the west
side of the river, no project recreational
facilities are being proposed for that
area at this time. Recreational access to
the west side of the Similkameen River
could be improved in the future, once
the plans for the Similkameen Rail Trail
are finalized.
PO 00000
Frm 00075
Fmt 4701
Sfmt 4703
3.3.7
3.3.7.1
28579
Aesthetic Resources
Affected Environment
Project Setting
Situated in north-central Washington
(near the Canadian border) on the east
side of the Cascade Mountains near the
rural community of Oroville, the Enloe
Project area is characterized by its
remote, relatively undeveloped
landscape. Accessed via the narrow
Loomis-Oroville Road, the Enloe Project
area features moderately steep
mountainous terrain incised by eroded
canyons. Created by the Similkameen
River, the Enloe Project area’s
topography is distinguished by gradual
to steep sloping canyon walls. These
walls rise to elevations between 700–
800 feet with Kruger Mountain rising
878 feet to the north and a series of
smaller un-named 750- to 800-foot
peaks line the southwest side. A small
intermittent stream, the Ellemeham
Draw, is situated between Enloe dam
and the falls, and visually cleaves the
southeast canyon wall. Most of the
project area is undeveloped with a
cluster of industrial structures and
abandoned buildings assembled
immediately around and just below
Enloe dam.
The land surrounding the Enloe
Project area is greatly influenced by its
climate and geologic history. The
eroded canyons that characterize the
Enloe Project area are generally the
result of retreating glaciers that last
covered the area about 15,000 years ago.
The eroded canyon slopes feature both
gradual slopes, as well as steep, rocky
inclines that rise to 800 feet (about 500
feet above the mean Enloe Project area
elevation). Upstream, the Similkameen
River follows a horseshoe-shaped turn
enclosed between steeply sloped canyon
walls, known as Shanker’s Bend. The
river within the Enloe Project area flows
placidly through a shallow reservoir
before spilling over Enloe dam and
plunging down steep falls immediately
downstream.
The hills on either side of the river are
a combination of rocky outcrops and
large areas of shrub steppe vegetation
spotted with evergreen trees. Riparian
forest, dominated by black cottonwood
in stands, is found along the reservoir
shoreline. In the spring, summer, and
fall, colors in the landscape are
primarily brown hues dotted with dark
green vegetation. Snow is common in
the winter. Textures in the landscape
include rocks, sagebrush, trees, and
water.
The overall landscape is a
combination of natural and humanmade elements. The natural elements
E:\FR\FM\17MYN2.SGM
17MYN2
28580
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
are characterized by unnamed
mountains, sparse low level vegetation,
and the Similkameen River snaking
through the canyon. Several humanmade elements are included in the
landscape of this region. These include
a vineyard, golf course, and residences
approximately 2 miles north of Oroville.
Linear elements include the LoomisOroville Road, which is located on the
canyon rim above the Similkameen
River and roughly follows the river’s
twists and turns, the abandoned Great
Northern Railroad grade that lines much
of the south or east shoreline of the river
at the canyon floor, power distribution
lines that run along the canyon walls
and rim, and two dirt tracks that extend
south from Loomis-Oroville Road and
lead to the dam. The access roads
proceed along the river’s eastern
perimeter to the dam, which is located
at a point where the canyon narrows.
While minimally visible from upstream,
Enloe dam rises quite prominently
when viewed from downstream. The
historic powerhouse is similarly
sheltered from view, perched against a
sharp slope on the west side of the river,
nestled within a rocky eddy. It is
accompanied by horizontal penstocks,
and prominently positioned cylindrical
surge tanks that rest on raised concrete
foundations. Human-made elements on
the east side of the river include: A
bridge remnant (which once connected
the east side of the river to the
powerhouse); two small outbuildings;
and an abandoned concrete irrigation
ditch. The town of Nighthawk,
approximately 6 miles west of Enloe
dam, is a historic mining community
comprised of wood-frame buildings
(residences and associated agricultural
buildings) along a two-track dirt road.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
Visitation to the Enloe Project area is
largely confined to those persons
traveling along the Loomis-Oroville
Road or pursuing outdoor recreation
activities in the canyon, as well as
Native Americans and Canadian First
Nations who attach cultural value to the
natural setting and associated fishing
areas.
Visual Resource Management
BLM manages its lands in accordance
with its Visual Resource Management
(VRM) System. The system designates
landscape units in four classes that
indicate the overall significance of the
visual environment and establishes
objectives for the management of each
class in order to define the level of
change from a proposed project that is
acceptable in that class. By comparing
the effects from a project to the
established visual objective for that area,
the visual acceptability of that project
and mitigation measures needed to
decrease the visual contrast are
determined. The four visual
management classes and their objectives
are described below:
• Class I—The objective of this class
is to preserve the existing character of
the landscape. This class provides for
natural ecological changes; however, it
does not preclude very limited
management activity. The level of
change to the characteristic
(background) landscape should be very
low and must not attract attention.
• Class II—The objective of this class
is to retain the existing character of the
landscape. The level of change to the
characteristic landscape should be low.
Management activities may be seen, but
should not attract the attention of the
casual observer. Any changes must
repeat the basic elements of form, line,
PO 00000
Frm 00076
Fmt 4701
Sfmt 4703
color, and texture found in the
predominant natural features of the
characteristic landscape.
• Class III—The objective of this class
is to partially retain the existing
character of the landscape. The level of
change to the characteristic landscape
should be moderate. Management
activities may attract attention but
should not dominate the view of the
casual observer. Changes should repeat
the basic elements found in the
predominant natural features of the
characteristic landscape.
• Class IV—The objective of this class
is to provide for management activities
that require major modification of the
existing character of the landscape. The
level of change to the characteristic
landscape can be high. These
management activities may dominate
the view and be the major focus of
viewer attention. However, every
attempt should be made to minimize the
impact of these activities through
careful location, minimal disturbance,
and repeating the basic elements.
In consultation with the BLM,
Okanogan PUD conducted visual
resources analysis of the Enloe Project
area using the VRM methodology
outlined above and determined that the
characteristics of the area fell within the
Class IV management class. Four key
observation points (KOPs) in the project
area were identified for analysis of the
most critically-traveled routes or
observation points in the Enloe project
boundary (figure 10): (1) LoomisOroville Road; (2) overlook from
Loomis-Oroville Road approximately 3
miles north of Oroville; (3) rocks below
Enloe dam on the Similkameen River;
and (4) overlook near Enloe dam (figures
11 through 14).
BILLING CODE 6717–01–P
E:\FR\FM\17MYN2.SGM
17MYN2
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00077
Fmt 4701
Sfmt 4725
E:\FR\FM\17MYN2.SGM
17MYN2
28581
EN17MY11.009
sroberts on DSK69SOYB1PROD with NOTICES
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
28582
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
The dates that the photos were taken
and the approximate river flows at that
time were not included in the study.
middleground. Visibility of the Enloe
Project area is generally unobstructed to
travelers on Loomis-Oroville Road;
however, the canyon topography makes
it difficult for the travelers to view.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00078
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
EN17MY11.010
with the proposed locations for
interpretive displays (figure 10): The
overlook east of Enloe dam and the
areas where the two interpretive panels
would be placed (figures 15 through 17).
Travelers on Loomis-Oroville Road
view the Enloe Project area for a
relatively short time in the foreground-
sroberts on DSK69SOYB1PROD with NOTICES
On May 29, 2009, additional
information was submitted by Okanogan
PUD regarding the visual resources
study. Three additional KOPs were
evaluated to include views associated
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
Enloe Project area. From this viewpoint,
the dam is visible as are the abandoned
PO 00000
Frm 00079
Fmt 4701
Sfmt 4703
penstock, surge tank, and the roof of the
abandoned powerhouse.
E:\FR\FM\17MYN2.SGM
17MYN2
EN17MY11.011
sroberts on DSK69SOYB1PROD with NOTICES
People stopping at the overlook on
Loomis-Oroville Road have
opportunities for extended views of the
28583
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
Recreators on the river have extended
views of the project area. From this
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
viewpoint visitors see the existing
human-made features to include the
PO 00000
Frm 00080
Fmt 4701
Sfmt 4703
abandoned powerhouse, former
footbridge tower, and Enloe dam.
E:\FR\FM\17MYN2.SGM
17MYN2
EN17MY11.012
28584
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
28585
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00081
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
EN17MY11.013
sroberts on DSK69SOYB1PROD with NOTICES
From this viewpoint, the dam and
abandoned penstock are clearly visible.
28586
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00082
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
EN17MY11.014
sroberts on DSK69SOYB1PROD with NOTICES
From this viewpoint looking
downstream, the abandoned penstock
and powerhouse are visible.
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
proposed pedestrian trail would have
opportunities for extended views of the
PO 00000
Frm 00083
Fmt 4701
Sfmt 4703
project area. From this viewpoint, the
dam is clearly visible.
E:\FR\FM\17MYN2.SGM
17MYN2
EN17MY11.015
sroberts on DSK69SOYB1PROD with NOTICES
Visitors stopping at this proposed
interpretive panel location along a
28587
28588
BILLING CODE 6717–01–C
Visitors stopping at this proposed
interpretive panel along a proposed
pedestrian trail, located approximately
300 feet south of KOP #6 would also
have opportunities for extended views
of the project area. From this viewpoint,
the dam, the abandoned penstocks, and
Similkameen Falls are clearly visible.
sroberts on DSK69SOYB1PROD with NOTICES
Noise
Noise is generally defined as
unwanted sound. It is emitted from
various sources including airplanes,
factories, railroads, and highway
vehicles. The magnitude of noise is
described by its sound pressure.
Because the range of sound pressure
varies greatly, a logarithmic scale is
used to relate sound pressures to some
common reference level, the decibel.
Therefore, a sound pressure level is
equivalent to a certain number of
decibels.
Because sound pressure levels
expressed in decibels are based on a
logarithmic scale, they cannot be added
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
or subtracted in the usual arithmetical
manner. If a sound of 70 dB is added to
another sound of 70 dB, the increase is
only 3 dB to 73 dB, not a doubling to
140 dB. If two sounds are of different
levels, the lower level adds less to the
higher level as their difference
increases. For example, if the difference
is as much as 10 dB, the lower level
adds nearly nothing to the higher level.
Adding 60 dB to a 70 dB sound
increases the total sound pressure level
less than 0.5 dB. Additionally, a
decrease of 3 dB in sound pressure level
means that the noise has been reduced
to half of its original level.
In 1974, EPA identified indoor and
outdoor noise levels to protect public
health and welfare against hearing loss,
annoyance, and activity interference
(EPA, 1974). A 24-hour exposure level
of 70 dB was identified as the limit of
environmental noise which will protect
against hearing damage. Levels of 55 dB
outdoors and 45 dB indoors are
identified as desirable limits to protect
from activity interference and
PO 00000
Frm 00084
Fmt 4701
Sfmt 4703
annoyance. These levels of noise are
considered those which will permit
spoken conversation and other activities
such as sleeping, working, and
recreation. The levels are not single
event or peak levels, but are 24-hour
averages. Further, these levels are not
regulatory goals or requirements; they
represent levels of environmental noise
required to protect the public health and
welfare with an adequate margin of
safety (EPA, 2007).
The Enloe Project area is
characterized by its remote, relatively
undeveloped landscape. Accessed via
the narrow Loomis-Oroville Road, the
Enloe Project area features moderately
steep mountainous terrain incised by
eroded canyons. Natural noises which
are associated with this site would
include wildlife sounds such as animal
calls and the sounds of wildlife moving
through the environment and
interacting with one another. Other
natural sounds would include sounds of
the physical environment such as wind,
rain, thunder and the river rushing over
E:\FR\FM\17MYN2.SGM
17MYN2
EN17MY11.016
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
the dam or falls when flows are
occurring. Human background noise
would include the passing cars on the
Loomis-Oroville Road, the sound of
recreating visitors, and the activities
Okanogan PUD employees occasionally
checking the area of the dam.
3.3.7.2
Environmental Effects
Aesthetics Management Plan
Okanogan PUD proposes to
implement its Aesthetics Management
Plan to manage project effects on
aesthetic resources associated with the
proposed project. Okanogan PUD
proposes the following measures within
its Aesthetics Management Plan.
sroberts on DSK69SOYB1PROD with NOTICES
Use Visually-Compatible Colors and
Building Materials and Non-Reflective
Surfaces (AES–01 and AES–03)
Okanogan PUD proposes to use
visually-compatible colors and building
material textures that harmonize with
the existing landscape for the new eastbank construction. A range of
compatible colors and building material
textures would be used to reduce the
visual presence of new project facilities
within the larger landscape.
The proposed east bank construction
of project facilities consists of the (1)
new crest gates at the top of the dam,
(2) headworks that include an approach
channel, river intake, and intake canal,
(3) penstock intake, (4) two penstocks,
(5) powerhouse, (6) tailrace, (7)
recreational facilities north of the dam
(picnic tables, vault toilet, boat launch),
and (8) an improved access road.
It would be expected that the
powerhouse, penstocks, and tailrace
would be visible from KOPs #3 through
#7 with the powerhouse representing
the most visible new feature. To further
reduce the visual presence of the new
powerhouse and have the new structure
harmonize with its surroundings,
Okanogan PUD proposes colors
consistent with suggested guidelines
within the HPMP regarding new
construction within the Enloe Project.
These guidelines state that ‘‘muted,
natural tone materials would be used.
Okanogan PUD also proposes matte
finishes, as opposed to glossy finishes.
Consistent with guidance within the
HPMP, new building materials, such as
concrete, steel, and galvanized metal
roofing would have minimal, but some
discernable textures. Concrete, for
instance, would in general be left
exposed, trowelled smooth so that board
forms are not visible, or coated with
natural gray-colored stucco coatings to
blend with the original features. While
galvanized materials, such as steel or
iron roofing, are by nature smooth, they
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
would be primed with a matte finish
and be nonreflective.
Consultation with Colville Confederated
Tribes on Traditional Cultural
Properties (AES–02)
The Colville attach cultural
significance to the visual aesthetics of
several natural features and their
components (i.e., Traditional Cultural
Properties) within the project area.
Okanogan PUD proposes to consult with
the Colville concerning these traditional
cultural properties utilizing the existing
Cultural Resources Working Group.
Dewatering and Construction of a New
Facility That Could Block Existing
Views (AES–04)
Okanogan PUD proposes to make trail
improvements that would create closer
and more intimate views of the falls.
This would be from viewpoints that are
not currently easily accessible to the
public. The trail would be linked to the
recreational improvements made above
the dam and provide visitors with a trail
with closer views of the falls and greater
accessibility to the area below the dam.
Interpretive signage, in concert with
HIST–03, would also be placed along
the trail to highlight historical flows
over the dam. This new trail would help
to replace views partially blocked by the
construction of new project facilities
and provide closer access to the falls for
recreators during periods of high flows
and high visitation.
The existing buildings would be
removed unless a qualified third party
entity assumes ownership and
management of the old west bank
powerhouse to maintain it for historic
and recreation purposes. If a qualified
third party entity is not identified
within five years of licensing, then the
historic Enloe powerhouse, located on
the west side of the Similkameen River
and below Enloe dam, would be
demolished after completing mitigation
measures undertaken in consultation
with the Washington SHPO and Park
Service. Such measures may include
detailed Historic American Engineering
Record (HAER) documentation.
Okanogan PUD states that the
foundation of the powerhouse and surge
tanks, which accounts for about 50
percent of the visible portions of the
building, would be retained, but that the
powerhouse and surge tank
superstructures would be demolished to
remove any deteriorated and unstable
structures from the site. Okanogan PUD
would also ensure that these actions are
consistent with Measures HIST–01,
HIST–02, and ARCH–01.
BLM recommends that Okanogan
PUD revise and implement the
PO 00000
Frm 00085
Fmt 4701
Sfmt 4703
28589
Aesthetics Resource Management Plan
to include the following: (1) Blending
the existing and proposed Enloe Project
into the existing landscape character; (2)
revegetate, stabilize, and landscape new
construction areas and areas
immediately adjacent; (3) grading,
planting native vegetation, repairing
slopes damaged by erosion, preventing
future erosion; (4) monitoring and
maintenance; (5) implementation
schedule; (6) periodic review and
revision; and (7) providing river flows
over Enloe dam.
BLM also noted in its 10(a)
recommendations that Okanogan PUD’s
aesthetic analysis identified the
Similkameen Area as having a Scenic
Quality of B, but then based its analysis
as having a Scenic Quality of C.
Therefore, BLM recommends that the
aesthetic analysis that Okanogan PUD
conducted be revised to reflect a Scenic
Quality of B and to similarly adjust the
sensitivity rating given the current and
projected recreation use, the
identification of sightseeing as a use in
the final license application, the
designation of a National Scenic Trail
which passes by the Enloe Project, and
the proximity of a highway.
Our Analysis
Okanogan PUD’s proposal to use
visually-compatible colors and building
material textures that harmonize with
the existing landscape for the new eastbank construction and implement its
Aesthetics Management Plan would
reduce potential adverse visual effects at
the proposed project. BLM’s
recommendation that Okanogan PUD
include specific approaches concerning
the blending of the existing and
proposed Enloe Project facilities into the
existing landscape character,
revegetating and stabilizing and
landscaping new construction areas and
areas immediately adjacent, grading,
planting native vegetation, repairing
slopes damaged by erosion, preventing
future erosion, monitoring and
maintenance, implementation schedule,
and periodic review and revisions
would help ensure that project facilities
would ensure protection of the visual
resources at the proposed project. In
addition, because the project is located
on BLM lands, it would be beneficial if
BLM were added to this consultation
process in addition to consultation with
the Colville. Revising the Aesthetics
Management Plan to contain these
elements could have a direct beneficial
effect on aesthetic resources at the
project by keeping BLM and the Colville
informed on lay down or construction
material storage areas that are yet to be
determined. Consultation with BLM on
E:\FR\FM\17MYN2.SGM
17MYN2
28590
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
the revision of the aesthetic analysis to
reflect a Scenic Quality of B, with an
appropriate sensitivity rating reflecting
the site conditions identified in BLM’s
10(a) recommendation, would ensure
that the project area has been
appropriately evaluated and that
appropriate measures are undertaken to
preserve the aesthetic character of the
area.
sroberts on DSK69SOYB1PROD with NOTICES
Aesthetic River Flows
As we’ve said, Okanogan PUD
proposes a year-round minimum flows
of 10 cfs in the bypassed reach. The
flows would be seasonally adjusted to
30 cfs for the period of mid-July through
mid-September. This proposal would
provide minimum flows when spillage
is not occurring—about 9.5 months of
the year in low water years and 8
months in high water years. BLM, the
Colville, Washington SHPO, and
American Whitewater recommend an
investigation into options for providing
river flows over Enloe dam and the
subsequent Similkameen Falls for
aesthetic purposes, the incorporation of
aesthetic flows into the Aesthetic
Management Plan, and a survey of
recreational users regarding aesthetic
flow releases. Specifically, the parties
request a study to assess the effects of
dewatering the spillway and rocky area
below the dam, including alternatives
that would spill water over the dam all
year long.
Okanogan PUD states that
Similkameen River fisheries managers
have expressed serious concern that
aesthetic flows could increase
temperature below the falls. For this
reason, the minimum flows would be
monitored for both DO and
temperatures. Additionally, Okanogan
PUD proposes to address issues with the
minimum flow through an adaptive
management plan.
Our Analysis
In consultation with BLM, Okanogan
PUD conducted visual resources
analysis of the Enloe Project area using
the VRM methodology outlined above
and determined that the characteristics
of the area fell within the Class IV
management class. In addition,
Okanogan PUD provided aesthetic
simulations showing the views of
project area from various KOPs.
The lowest minimum monthly
average flow of 191 cfs occurred on
September 2003. The proposed
minimum flow of 10 cfs (for the last 15
days of the month) is only 5 percent of
the 79 year record (see table 2) and is
less aesthetically desirable. However,
any minimum flow must meet the water
quality standards. The 10-cfs flow (with
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
seasonal adjustment to 30 cfs) would
meet water quality standards based on
Okanogan PUD’s best estimate of the
bypassed reach dimensions and
modeling of the temperature gained in
the bypassed reach (see section 3.3.2.2,
Minimum Flow Proposal).
While several assumptions were made
in the modeling and size estimate of the
bypass section, this is a proposed
minimum flow and is subject to change
based on real-world results.
Additionally, the method of delivery of
the minimum flow is undetermined at
this time. As such, it is difficult to
ascertain the full effects of the minimum
flow on water quality and the aesthetic
resources, namely the falls. However,
the measure, along with an evaluation to
determine effectiveness, should
adequately provide a means for testing
the proposals’ effect on aesthetics and
water quality while still providing a
framework for making improvements, if
needed. Observing recreation use at the
falls as a part of the recreation
monitoring plan would provide more
information on if visitors to the project
are visiting the falls as well.
Noise
Proposed construction activities at the
Enloe project would cause unnatural
noises. Okanogan PUD has taken steps
to reduce the impacts of such noise,
particularly with its Blasting Plan. It
also proposes to concentrate
construction activities with the loudest
noise to occur in summer and early fall
to minimize effects on overwintering
birds and bald eagles as much as
possible.
Once the project is complete, minor
noise would be associated with the
operation and maintenance of the
hydroelectric facility (typically 54–68
decibels ten to sixty feet from the
powerhouse, depending upon the
design structure and topography), but it
is not anticipated that routine project
operations and maintenance would
disturb wildlife or visitors in the project
area.
Our Analysis
Although proposed construction
activities would cause unnatural noises
at the project, construction-related noise
is considered a temporary and shortterm effect. Constructing the project in
the summer and early fall would reduce
the effect on overwintering birds and
bald eagles and other wildlife.
Moreover, visitors would only be
allowed limited public access to the
project during construction as proposed
in the Safety during Construction Plan.
This would increase the distance
between the public and construction
PO 00000
Frm 00086
Fmt 4701
Sfmt 4703
activities at the project and further
minimize the amount of constructionrelated noise visitors may hear when
visiting the project.
3.3.8
3.3.8.1
Cultural Resources
Affected Environment
Section 106 of the National Historic
Preservation Act
Section 106 of NHPA, as amended,
requires the Commission to take into
account the effects of licensing a
hydropower project on any historic
properties and allow the Advisory
Council on Historic Preservation a
reasonable opportunity to comment if
any adverse effects on historic
properties are identified within the
hydropower project’s APE.
Historic properties are defined as any
district, site, building, structure, or
object that is included in or eligible for
inclusion in the National Register. In
this EA, we also use the term ‘‘cultural
resources’’ to include properties that
have not been evaluated for eligibility
for listing in the National Register. In
most cases, cultural resources less than
50 years old are not considered eligible
for the National Register.
Section 106 also requires that the
Commission seek concurrence with the
Washington SHPO on any finding
involving effects or no effects on
historic properties. If Native American
(i.e., aboriginal) properties have been
identified, section 106 also requires that
the Commission consult with interested
Native American tribes that might attach
religious or cultural significance to such
properties.
Area of Potential Effect (APE)
Pursuant to section 106, the
Commission must take into account
whether any historic property could be
affected by the issuance of a license
within a project’s APE. The APE is
determined in consultation with the
Washington SHPO and is defined as the
geographic area or areas within which
an undertaking may directly or
indirectly cause alterations in the
character or use of historic properties, if
any such properties exist. In its license
application, Okanogan PUD (2008a)
defined an APE as consisting of all
lands within the Enloe Project
boundary, described as the 1,055-foot
above mean sea level elevation line that
extends from the upstream end of
Shanker’s Bend, to approximately 1,000
feet downstream from Enloe dam. The
APE includes the dam, penstocks,
powerhouse, recreational sites, access
roads, and appurtenant facilities. The
APE for historic resources (buildings
and structures) extends beyond the
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
project boundary to include an
additional 100 feet (horizontally) where
project operations may affect the
character or use of historical resources
and/or TCPs. Okanogan PUD included
in its license application a letter dated
July 24, 2009, from the Washington
SHPO office which concurred with the
APE.
In November 2008, Okanogan PUD
requested Washington SHPO
concurrence on an amended APE that
consisted of the APE as described above,
and also included an additional access
road. Okanogan PUD’s May 2009 HPMP
identifies the APE as such, but also
includes a limited number of power
transmission lines that connect to a
single utility pole.
On October 14, 2009, the Commission
requested clarification of Okanogan
PUD’s response to additional
information Item 11, side channel
enhancement development. The
Commission requested a map to clearly
identify the proposed side channel’s
location in relationship to the project’s
defined APE and requested that the
Okanogan PUD consult with the
Washington SHPO regarding the sidechannel enhancement site. Okanogan
PUD filed its response on December 14,
2009. In its clarification response, PUD
provided a copy of meeting minutes
from a November 30, 2009, CRWG
meeting. At the meeting, the possibility
of two separate APEs was discussed:
one consisting of the proposed project
APE and another APE encompassing
lands to be affected by the proposed
side-channel enhancement site (sidechannel APE). The CRWG agreed that
two separate APEs for the Enloe Project
would be appropriate and should be
identified in the PA and associated
HPMP. On September 23, 2010,
Okanogan PUD requested Washington
SHPO’s concurrence on the sidechannel APE. On September 28, 2010,
the Washington SHPO concurred.
Prehistoric and Historic Background
The following text is a summary of
the cultural overview provided in the
May 2009 HPMP (Okanogan PUD,
2009e).
The Northern Columbia Plateau lies
primarily within the Fraser Watershed,
with a portion in the south draining into
the Columbia River Watershed. It is an
area that was occupied primarily by
Interior Salish speakers who are now
represented by the Colville. Colonizing
groups were likely coastal people with
a generalized Paleolithic foraging
economy that spanned a much larger
geographic area. Middle Holocene and
later peoples followed a generally
riverine subsistence economy typical of
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
the large western river systems,
including a collector strategy that was
centered on ungulates and salmon and
the gathering and storage of root crops.
As a result of resource pressures,
Plateau peoples tended to follow an
annual round that led them to move to
locations of stable, predictable resources
on somewhat the same schedule every
year. Changes to that schedule, such as
moving from winter villages earlier in
spring than usual, or leaving a common
fishing location earlier, were generally
due to variations in the productivity of
the resource that existed that year.
Several different regional cultural
chronologies commonly employed for
the region reflect prehistoric occupation
to approximately 12,500 years before
present.
At the time of contact, the Okanogan
people occupied the portion of the
Central Plateau region that includes the
study area. The political structure of the
people of the Central Plateau region
consisted of small autonomous bands or
villages. Bands were organized in small
groups according to language, customs,
and friendly relations, with group
leaders generally inheriting their
position. The seasonal round that
groups made was based on the
availability of salmon, berries, roots,
and large game. Winter villages
typically consisted of a long house
covered with a tule-mat roof, one or
more subterranean houses, and a sweat
lodge. Villages were located near water
and firewood. Near the project area, the
falls, the location of Enloe dam, was a
likely fishing site throughout the
Holocene. If necessary, individuals
would hunt deer, bear, or other game to
supplement their winter food supplies.
In April, the members of the winter
village moved to streams where they
would catch trout and suckers, which
were dried and eaten until the salmon
runs began in June. Women gathered
bitterroot and camas. From June to
October, salmon fishing was a primary
focus of subsistence activities with the
continuation of gathering of berries and
roots near rivers. The salmon were
caught with spears, weirs, fish traps,
large nets, and dipnets. They were dried
on racks erected near the fishing camps.
Early Euroamerican presence in the
Okanogan Valley was driven by
economic interest in locating fur trading
posts and establishing relations with
local tribes. In 1811, the Canadian
Northwest Company fur trader David
Thompson was the first Euroamerican to
travel to the Okanogan County seeking
new trading opportunities. In fall 1811,
the Pacific Fur Company established
Fort Okanogan 1 mile north of the
confluence of the Okanogan and
PO 00000
Frm 00087
Fmt 4701
Sfmt 4703
28591
Columbia rivers. By the late 1820s,
nearby Fort Colville became the center
for inland trading. By 1860, plagues
caused a decline in the Native American
population and the depletion of fur
resources, which led to the decline of
the fur industry in the Okanogan region.
Christian missionaries arrived in to
the Northwest in the 1840s and
contributed to the permanent
Euroamerican settlement of the
Northwest. The Whitman mission was
established in 1841 south of the
Okanogan region in Walla Walla, while
Father Pierre Jean de Smet, who
traveled widely, came to the Okanogan
Valley in 1842. It was not until 1885
that missionary Etienne de Rouge
established a mission for the Okanogan
Indians at Ellisforde. Two years later,
the mission was moved south to Lake
Omak.
On May 3, 1853, Washington
Territory was created out of the Oregon
Territory. During this period, Territorial
Governor Isaac Stevens negotiated
treaties with local tribes. The treaties
defined boundaries of ceded territories
and removed Indian tribes to
reservations, thereby opening lands for
American settlement. Between 1855 and
1856 hostilities broke out between tribes
and Euroamericans erupting into the
Yakima War.
Another point of conflict for local
tribes was the growing mining activity
that had an impact on salmon spawning
streams, brought an influx of
Euroamericans to the Okanogan Valley,
and further altered the local economy
and development patterns. Miners
formed temporary settlements in places
with convenient access to supplies and
the gold fields. One such encampment
near the mouth of the Similkameen
River following a gold strike at
Shanker’s Bend in 1859 was called
‘‘Okanagan City’’ and in 1860 had a
population of 3,000.
Transportation in the area advanced
from stage coaches following the
Okanogan Trail to steamboats along the
Columbia and Okanogan rivers during
high water season. By the early 1900s,
the Marcus Division Molson-Chopaka
branch of the Great Northern Railway
line was constructed along the
Similkameen River offering improved
access to the mineral of the area. The
lead and zinc mining town of
Nighthawk, just west of the project, was
founded in the 1890s. The community
once occupied 160 acres. Today, it is
privately owned by a rancher, and
several historical buildings remain
standing, including the old post office
and hotel dating to the mining era.
A USGS map from 1906 and county
atlas from 1934 show additional roads
E:\FR\FM\17MYN2.SGM
17MYN2
28592
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
and trails in the vicinity of the APE
(Metzger, 1934, as cited by Okanogan
PUD, 2009e). The 1934 map also shows
an irrigation canal between the
Similkameen River and the OrovilleTonasket Road to the east.
In 1955, the U.S. Bureau of
Reclamation (Reclamation) began
investigating the feasibility of
establishing irrigation facilities for an
Okanogan-Similkameen Division, using
water from the nearby Chief Joseph
Dam. The Oroville-Tonasket Unit of the
Okanogan-Similkameen Division was
authorized by the Act of October 9, 1962
(76 Stat. 761, Public Law 87–762),
placed under construction in 1965, and
completed in 1969 (Reclamation, 2007,
as cited by Okanogan PUD, 2009e).
Remnants of this later partially
concrete-lined canal are within the
project boundary APE.
The power potential of the falls site
attracted the interest of Eugene Enloe,
the owner of a store in Medicine Lake,
who began buying small power
companies in eastern Washington. In
1913, he incorporated the Okanogan
Valley Power Company. By 1916,
Okanogan Valley Power had also
acquired the falls site including all the
power generating equipment used at the
original power plant. Use of the Great
Northern Railway allowed for the
delivery of construction materials for
the powerhouse and dam. Designs for
the new powerhouse were developed in
1916, and construction of the concrete
arch-gravity Enloe dam began in 1919
and was completed in the summer of
1920.
Reflective of the move toward small
utilities becoming part of a unified
system, the Washington Water Power
Company bought Okanogan Valley
Power in 1923. Washington Water
Power Company added a second unit of
1,600 kilowatts to the Enloe plant in
1924. Washington Water Power
Company operated the complex until
1942 when it was acquired by Okanogan
PUD. It became economically inefficient
to operate the small complex after 1958,
when the Bonneville Power
Administration brought its high voltage
line to the Okanogan Valley. Okanogan
PUD ceased operation of the plant’s
generators on July 29, 1958.
According to a record search
undertaken by Okanogan PUD, several
cultural resources studies have been
undertaken in the vicinity of the project
boundary APE (Okanogan PUD, 2009e).
The Corps conducted a cultural
resources study between 1985 and 1987
(Salo, 1987, as cited by Okanogan PUD,
2009e). Within the APE in the vicinity
of the project boundary, the Corps study
identified five archaeological sites:
45OK367, 45OK532, 45OK533,
45OK565, and 45OK566.
Another study within the APE was
conducted for a previous Enloe Project
licensing effort (Galm, 1991, as cited by
Okanogan PUD, 2009e). This previous
effort identified the potential of adverse
effects on the National Register-eligible
Enloe dam and archaeological sites
45OK532, 45OK533, 45OK565, and
45OK566 (Okanogan PUD, 2009e). It
was noted that licensing the project
could result in adverse effects on
unidentified TCPs.
A later study conducted by
Archaeological and Historical Services
(AHS) included test excavations at
45OK367, 45OK532, and 45OK566
(Boreson, 1992, as cited by Okanogan
PUD, 2009e). AHS determined that both
45OK532 and 45OK566 were National
Register-eligible under Criterion D.39
AHS did not conduct archaeological
investigations of sites 45OK533 and
45OK565.
A record search undertaken of the
side channel APE identified six
archaeological sites documented within
one mile of the side channel APE:
45OK355, 45OK357, 45OK358,
45OK359, 45OK369, and 45OK370
(Okanogan PUD, 2009f). All of the sites
were recorded in 1976 by the Corps. No
archaeological, historic, or architectural
resources had been previously
identified within the boundary of the
side channel APE. A dike constructed in
the early 1970s is located in this APE,
but according to Okanogan PUD, this
feature does not meet the 50-year age
requirement for National Register
eligibility (Okanogan PUD, 2009f).
Archaeological and Historic-Era
Properties and Structures
Between 2006 and 2007, Okanogan
PUD conducted cultural resources
inventories of lands within the project
boundary APE. These results of these
studies were presented in Enloe Dam
Licensing Project, Okanogan County,
Washington, FINAL Cultural Resources
Section 106 Technical Report
(Okanogan PUD, 2008b). These studies
resulted in the documentation of eight
archaeological sites and six historical
features or structures within the APE.
Two additional sites were identified
directly adjacent to the project boundary
APE. Table 18 provides a summary of
all prehistoric and historic resources
identified within or adjacent to the
project boundary APE to date. A
cultural resources study of the side
channel APE conducted in October 2009
did not result in the documentation of
any archeological or historic-era
properties within this area.
TABLE 18—ARCHAEOLOGICAL AND HISTORIC RESOURCES WITHIN OR DIRECTLY ADJACENT TO THE ENLOE PROJECT
BOUNDARY APE
[Source: Okanogan PUD, 2009e, as modified by Staff]
sroberts on DSK69SOYB1PROD with NOTICES
Primary No.
Description
National Register eligibility and rationale
Within
APE
45OK367 ...............
45OK368 ...............
45OK368 ...............
45OK532 ...............
45OK533H ............
45OK565 ...............
45OK566 ...............
45OK1238 (AR–1)
45OK1239 (AR–4)
45OK1240 (AR–5)
45OK1241 (AR–6)
45OK1265 (AR–4)
Prehistoric occupation debris ..........
Enloe dam .......................................
Enloe powerhouse ...........................
Lithic debris .....................................
Historic homestead ..........................
Prehistoric site .................................
Lithic scatter ....................................
Gensey homestead site ...................
Similkameen Falls powerhouse .......
Railroad camp .................................
Historic roads ...................................
Historic can dump ............................
Not eligible due to lack of integrity ............................................................
Listed on the National Register; eligible under Criterion A. 40 ..................
Listed on the National Register; eligible under Criterion A .......................
Eligible under Criterion D ..........................................................................
Not eligible; does not meet National Register criteria ...............................
Unknown; consultant could not relocate site .............................................
Eligible under Criterion D ..........................................................................
Unevaluated (outside of APE) ...................................................................
Not eligible due to lack of integrity ............................................................
Unevaluated (outside of APE) ...................................................................
Not eligible; does not meet National Register criteria ...............................
Not eligible; does not meet National Register criteria ...............................
Y
Y
Y
Y
Y
Y
Y
N
Y
N
Y
Y
39 Criterion D is as follows, ‘‘that have yielded, or
may be likely to yield, information important in
prehistory or history.’’ 36 CFR 60.4.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
40 Criterion A is as follows, ‘‘that are associated
with events that have made a significant
PO 00000
Frm 00088
Fmt 4701
Sfmt 4703
contribution to the broad patterns of our history.’’
36 CFR 60.4.
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
28593
TABLE 18—ARCHAEOLOGICAL AND HISTORIC RESOURCES WITHIN OR DIRECTLY ADJACENT TO THE ENLOE PROJECT
BOUNDARY APE—Continued
[Source: Okanogan PUD, 2009e, as modified by Staff]
Primary No.
Description
National Register eligibility and rationale
Within
APE
HR–1 .....................
HR–2 .....................
HR–3 .....................
Great Northern Railroad Grade .......
Access road to operator’s house ....
Pump house and water tank ...........
Y
Y
Y
HR–4 .....................
Oroville-Tonasket Irrigation Canal ...
Eligible under Criterion A (June 19, 2007) ................................................
Not eligible; does not meet National Register criteria ...............................
Not eligible; does not meet National Register criteria; integrity compromised.
Portion within the APE not eligible; does not meet National Register criteria, integrity compromised.
sroberts on DSK69SOYB1PROD with NOTICES
In June 2007, the Washington SHPO
concurred that resources 45OK368
(Enloe dam, Enloe powerhouse and
penstock), and HR–1 (Great Northern
Railroad Grade) are eligible for or listed
in the National Register and that
resources HR–2 (access road to
operator’s house at Enloe dam) and HR–
3 (pump house and water tank) are not
eligible (letter from G. Griffith, Deputy
State Historic Preservation Officer,
Washington Department of Archaeology
and Historic Preservation, Olympia,
Washington, to K. Demuth, ENTRIX,
Inc., Seattle, Washington, June 19,
2007). In its letter, the Washington
SHPO also concurred that the portion of
HR–4 (Oroville-Tonasket Irrigation
Canal) located within the APE does not
contribute to the potential significance
of other portions of the canal that were
previously determined to be eligible.
However, the Washington SHPO
recommends that the system be reevaluated for National Register
eligibility 5 to 10 hence. The HPMP
notes that both the historic Enloe dam
and powerhouse have been documented
according to HAER standards (Holstine
and Eminger 1990, as cited by Entrix
2009).
In September 2008, the Washington
SHPO concurred that sites 45OK532 and
45OK566 are eligible for the National
Register and that sites 45OK367,
45OK533H, 45OK1239, 45OK1241, and
45OK1265 are not eligible (letter from R.
Whitlam, State Archaeologist,
Washington Department of Archaeology
and Historic Preservation, Olympia,
Washington, to R. Bailey, District
Archaeologist, Spokane District Office,
BLM, Spokane Valley, Washington,
September 23, 2008).
Traditional Cultural Properties
In 2006, Okanogan PUD consulted
with the Colville to identify potential
TCPs that could be present within the
project APE. A final TCP report was
included as an appendix to the Enloe
Dam Licensing Project, Okanogan
County, Washington, Final Cultural
Resources Section 106 Technical Report
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
(Okanogan PUD, 2008b). Within the
APE, two potential TCPs were
identified.
3.3.8.2 Environmental Effects
In a letter filed August 6, 2009, the
Washington SHPO concurred that the
proposed Enloe Project would have an
adverse effect on significant cultural
resources listed in, or determined
eligible for listing in, the National
Register. In view of the adverse effect
determination, the Washington SHPO
recommended development of a
Memorandum of Agreement or PA.
In this section, we evaluate the effects
of Okanogan PUD’s proposed project
construction, operation, and
maintenance on the following cultural
resources: (1) Archaeological resources;
(2) TCPs; and (3) historic buildings and
structures.
Project Construction
In its HPMP and section 106
Technical Report, Okanogan PUD states
that construction activities would
adversely affect one archaeological site
located within the project boundary
APE: Archaeological site 45OK532,
which is eligible for the National
Register under Criterion D (Okanogan
PUD, 2009e, 2008b). The access road
needed for project construction site
would use the existing OTID Ditch Road
that crosses site 45OK532. During
construction, Okanogan PUD proposes
to improve this road to a one-lane gravel
road with turnouts. As discussed below,
changes in chemical characteristics
(including pH) of soils and increases in
soil moisture content due to grounddisturbing activities can affect the
preservation of site 45OK532.
Proposed ground-disturbing
construction (parking area, trails,
fencing) would occur in the vicinity of
site 45OK367. However, this site has
been determined ineligible for the
National Register due to disturbance of
the prehistoric archaeological deposits
during the historic period. The
remaining sites are either ineligible for
the National Register, eligible
PO 00000
Frm 00089
Fmt 4701
Sfmt 4703
Y
(45OK566), or unevaluated (45OK565);
however, they are not located where
ground disturbance may occur.
Okanogan PUD also concluded that any
demolition of the historic Enloe
powerhouse is unlikely to affect
historically significant archaeological
resources (Okanogan PUD, 2009e).
In its Section 106 Technical Report,
Okanogan PUD (2008b) states that shortterm effects on TCPs identified in the
project boundary APE, such as noise,
dust, vibrations, and access restrictions,
would not be adverse. However,
construction of the new powerhouse
would have an adverse visual effect on
one of the two TCPs identified within
the project APE.
National Register-eligible Great
Northern Railroad Grade (HR–1) and
National Register-listed Enloe dam
(45OK368) and historic Enloe
powerhouse (45OK368) are historically
significant resources. The Enloe
powerhouse and Great Northern
Railroad Grade, both of which are
abandoned, are located across the river
from the proposed construction site;
therefore, Okanogan PUD states that
project construction would not result in
long-term effects on the Great Northern
Railroad Grade (Okanogan PUD, 2009e,
2008b). Long-term effects on the historic
Enloe powerhouse are discussed under
Operation and Maintenance Effects
below.
The historic Enloe dam would need to
be refurbished to meet current dam
safety requirements and to extend its
service life. Okanogan PUD states that
activities associated with refurbishment
would not contribute to the extended
life of the structure. These effects would
therefore not be considered adverse if
they are completed according to the
Secretary of the Interior’s Standards for
Rehabilitation (Okanogan PUD, 2009e,
2008b).
Other project-related construction
would entail an approximate 2.3-acre
staging area near the proposed new
powerhouse site and areas potentially
affected by spoil disposal. At this time,
effects on cultural resources that may be
E:\FR\FM\17MYN2.SGM
17MYN2
28594
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
associated with these areas are
unknown. The HPMP, however,
includes a provision for the discovery of
previously unidentified cultural
resources, which would ensure that the
resource is addressed in accordance
with section 106.
Project Operation and Maintenance
In its HPMP, Okanogan PUD states
that operation of the proposed Enloe
Project would not adversely affect
National Register-eligible archaeological
site 45OK566 and that effects on site
45OK565 have not been assessed
because the site could not be relocated
during project surveys (Okanogan PUD,
2009e). However, because prehistoric
site 45OK532 is buried within an
alluvial terrace adjacent to the
reservoir’s edge, Okanogan PUD
explains that fluctuating water levels in
the reservoir could potentially disturb
archaeological deposits at this site.
Additionally, the access road passing
through this site may result in
disturbance of archaeological deposits
as a result of maintenance activities and
increased traffic. Okanogan PUD
therefore concludes that effects on this
site are adverse.
Prehistoric site 45OK566 is situated
on a terrace outcrop above the river,
limiting the potential of project-related
erosion effects at this historically
significant site. Okanogan PUD therefore
states that there would be no
operational adverse effects to this site
(Okanogan PUD, 2009e).
Okanogan PUD states that proposed
recreation improvements could increase
public use of the project area resulting
in the potential of increased site
disturbance by recreationalists
(Okanogan PUD, 2009e, 2008b).
However, revegetating disturbed areas
with native vegetation, as discussed in
section 3.3.6, Recreation and Land Use,
could minimize project-related erosion
effects at the sites. Additionally,
consultation with the CRWG, including
the Washington SHPO and the tribe,
regarding project-related recreation
improvements, would protect the sites
through placement of the facilities.
In its HPMP, Okanogan PUD states
that operational effects on the historic
Enloe dam would not be adverse
(Okanogan PUD, 2009e). Also,
Okanogan PUD states that proposed
construction of a new powerhouse on
the east side of the river would not
adversely affect the historic Enloe
powerhouse. However, per the HPMP,
the powerhouse would either assume
new ownership with portions
demolished, or it would be entirely
demolished. In either case, any
demolition of the historic Enloe
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
powerhouse would result in an adverse
effect on a historic property.
Additionally, because of the
powerhouse’s proximity to a known
TCP, there is a possibility intact
archaeological resources could be
uncovered during demolition activities.
In its HPMP, Okanogan PUD proposes to
monitor this area during ground
disturbance.
Further, demolition of part or all of
the historic powerhouse would require
the transportation of equipment and
supplies along the existing National
Register-eligible Great Northern
Railroad Grade, which serves as an
access road to the Enloe powerhouse.
However, Okanogan PUD states that the
use of heavy equipment and hauling of
refuse along the railroad grade would
not damage the grade, including
elements to its existing railroad grade
surface or tunnel, which are located
outside the APE (Okanogan PUD, 2009e,
2008b). Okanogan PUD therefore
concludes that there would be no
adverse effect to the railroad grade as a
result of the project.
Historic Properties Management Plan
The HPMP was prepared after
consultation with the CRWG, consisting
of representatives from Okanogan PUD;
BLM; Forest Service; Washington SHPO;
the Colville; and the Commission staff.
In its HPMP, Okanogan PUD proposes to
appoint an HPMP Coordinator and
implement review procedures that
would apply to non-routine
maintenance activities, structural
modifications or additions that may be
necessary in the future. Additionally,
the HPMP includes measures and
procedures for: (1) Monitoring during
construction activities and over the
license term; (2) addressing
unanticipated discoveries and
evaluating cultural resources for
National Register-eligibility; (3)
discovery of human remains; (4)
emergency undertakings; (5) annual
reporting and agency coordination; (6)
periodic review and revision to the
HPMP every 5 years; (7) employee
training; (8) records management and
curation of any recovered archaeological
materials; and (9) activities exempt from
section 106 consultation. The HPMP
includes a process for identifying
resource-specific measures for historic
properties within the APE after
consultation with the CRWG.
The HPMP describes standards to be
applied during project activities that
have the potential to affect the historic
integrity of the historic Enloe dam.
Okanogan PUD would apply specific
standards adapted from the Secretary of
the Interior’s Standards for Historic
PO 00000
Frm 00090
Fmt 4701
Sfmt 4703
Preservation Projects to ensure
preservation of the dam. Additionally,
the HPMP includes historic resource
maintenance guidelines that would
guide future dam maintenance.
In its license application, Okanogan
PUD proposes to implement four
measures to address project effects on
significant historic structures (HIST–01,
HIST–02, HIST–03, and HIST–04).
Additionally, Okanogan PUD proposes
five measures for archaeological
resources (ARCH–01, ARCH–02, ARCH–
03, ARCH–04, and ARCH–05). Of the
nine measures, all but two of these
measures were subsequently
incorporated into the May 2009 HPMP.
HIST–04 would entail a review of
appropriate measures, and although the
HPMP does not specifically identify
measure ARCH–05 (Determine Potential
Recreational Impacts to Archaeological
Sites) by name, the HPMP discusses
measures to address potential
recreational effects on cultural
resources. The HPMP discusses the
other measures and describes how
Okanogan PUD is seeking an outside
entity to assume ownership of the
historic Enloe powerhouse (HIST–01). If
a new owner is not identified within 4
years, Okanogan PUD would consult
with the CRWG, which includes the
Commission, to identify appropriate
mitigation options prior to demolishing
the structure (HIST–02), which may
include updated HAER photography,
stabilization of a portion of the
powerhouse as a ‘‘ruin,’’ development of
interpretive materials for display in the
project boundary (HIST–03), offering
bricks, windows and other materials for
salvage, providing turbines and other
equipment from the powerhouse for use
in local museums, and developing an
interpretive facility that houses artifacts
from the powerhouse and Enloe dam. If
demolition is determined necessary, a
Memorandum of Agreement between
the Commission and the Washington
SHPO would be developed that could
identify agreed-upon mitigation
measures. The powerhouse penstocks
and surge tanks would be demolished
regardless of whether a new owner
would be identified. To mitigate adverse
effects on these features, Okanogan PUD
would photograph the powerhouse,
penstocks, and surge tanks to HAER
standards prior to their demolition.
In its HPMP, Okanogan PUD proposes
to monitor shoreline areas for erosion as
a result of reservoir fluctuation (ARCH–
01), avoid known historic properties
during construction (ARCH–02), and
monitor sites 45OK532 and 45OK367
during construction activities (ARCH–
03). If removal of the historic Enloe
powerhouse becomes necessary,
E:\FR\FM\17MYN2.SGM
17MYN2
sroberts on DSK69SOYB1PROD with NOTICES
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
Okanogan PUD proposes to mitigate
potential effects on an identified TCP by
monitoring any ground-disturbing
activity in the vicinity of the site during
demolition. Other treatment options for
site 45OK532 include capping the
portions of site that would be crossed by
the improved access road with gravel
and/or dirt rather than re-grading the
existing road and placing road turnouts
and shoulders outside of the site
boundary. However, in Appendix E of
the HPMP, Okanogan PUD states that
data recovery of site 45OK532 prior to
construction may be necessary.
Although site 45OK367 is not eligible
for the National Register, Okanogan
PUD would monitor it during
construction in the event that intact
deposits might be identified. To protect
both of these sites from recreational use,
Okanogan PUD proposes to implement
a long-term monitoring program. If any
changes to site conditions are identified,
Okanogan PUD would implement a
review procedure with the CRWG to
determine appropriate next steps.
Additionally, Okanogan PUD’s annual
report would summarize monitoring
efforts and CRWG consultation. Other
measures include implementing an
inadvertent discovery program and
training staff about protocols for such
discoveries (ARCH–04) and determining
if there would be effects on
archaeological sites in the vicinity of
recreational facilities (ARCH–05).
Interior recommends revising the May
2009 HPMP, after consultation with
BLM, the Washington SHPO, and the
Colville, to include the following:
• Revise the APE to accommodate
modifications to the Enloe Project
boundary, if any, and any projectrelated actions that may affect historic
properties on BLM-administered lands;
• A process for evaluating any
previously unidentified cultural
resources identified on BLMadministered lands;
• Provision for annual reports
describing activities involving BLMadministered cultural resources;
• Periodic review of the HPMP;
• Site monitoring program for longterm cultural resource monitoring on
BLM-administered lands;
• A process for developing sitespecific treatment or stabilization
measures for previously unidentified
historic properties on BLMadministered lands;
• A plan for updated cultural
resources inventory to be conducted if
the project boundary is modified to
include additional land or project
operations result in newly exposed,
previously un-surveyed lands;
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
• Provision for consultation with
regard to cultural interpretative and
educational plans (including signage);
• Provision for making records of
cultural resource data gathered by
Okanogan PUD on BLM-administered
lands available to the BLM; and
• Provision for inadvertent
discoveries.
In its response, Okanogan PUD states
that the May 2009 HPMP provides
procedures for the majority of the issues
raised by Interior and that, as provided
for in the HPMP, Okanogan PUD would
review the HPMP within 1 year of
license issuance to address any
concerns raised by the CRWG, including
by Interior.
As previously mentioned, the
Washington SHPO concurred that a
portion of the Oroville-Tonasket
Irrigation Canal within the project’s
defined APE is considered ‘‘noncontributing’’ to other portions of the
system that have previously been
determined National Register eligible.
However, the Washington SHPO
recommends that the system be reevaluated for National Register
eligibility 5 to 10 years hence.
Our Analysis
Okanogan PUD’s May 2009 HPMP
addresses many of Interior’s
recommendations and contains
measures for the protection of historic
properties within the defined Enloe
Project APE. However, we discuss
particular measures contained within
the HPMP, and where appropriate,
Interior’s recommendations.
The two APEs defined for the Enloe
Project encompass all areas related to, or
necessary for, the construction,
operation, and maintenance of the entire
proposed project. However, the May
2009 HPMP does not identify or discuss
the side-channel enhancement site,
including its defined APE. While no
historic properties have been identified
in this area, we find that inclusion of
the side-channel enhancement site and
a definition of its APE in the HPMP
would ensure that measures applied to
lands within the project boundary
would also apply to lands within the
side-channel enhancement site APE.
Additionally, as recommended by
Interior, the HPMP should include a
process for reviewing and revising the
APE, particularly where project-related
ground-disturbing activities may occur
in the future. In particular, this
provision would ensure that any design
modification to the proposed sidechannel enhancement site would be
taken into account.
Okanogan PUD’s proposal to appoint
an HPMP Coordinator would ensure
PO 00000
Frm 00091
Fmt 4701
Sfmt 4703
28595
that the requirements of the HPMP are
followed. Annual reporting to agencies
and the Colville on the status of cultural
resources management over the course
of the year would provide a regularly
scheduled forum for parties to discuss
the HPMP and provide comments. A
periodic review process for the HPMP
undertaken every 5 years would provide
a basis for continued implementation of
the HPMP. Interior recommended that
the May 2009 HPMP be revised within
1 year of license issuance to address its
recommendations. Interior’s
recommended timeframe should allow
Okanogan PUD sufficient time to
consult with Interior and the CRWG in
order to revise the HPMP accordingly.
Okanogan PUD’s proposal to conduct
training sessions as needed for staff
involved with the public or involved in
planning and implementation of actions
potentially affecting cultural resources
at the project would ensure that
employees are regularly informed about
issues, procedures, and protocols
regarding cultural resource. Consulting
with the Colville with regard to
Okanogan PUD employee training
would contribute toward staff
understanding properties of traditional
religious and cultural importance to the
tribe.
Okanogan PUD’s implementation of
review procedures during the planning
of potential ground-disturbing activities,
as well as protocols for inadvertent
discovery of previously unknown
cultural resources (as recommended by
Interior), human remains, and
emergency procedures as specified in its
HPMP, would ensure that cultural
resources are not inadvertently affected
by project-related actions; and, therefore
cultural resources and human remains
would be appropriately addressed.
While the May 2009 HPMP does not
specifically contain a detailed
discussion of public interpretation and
education, HIST–03 includes a
provision for installing public
interpretive panels. Okanogan PUD’s
proposed measures REC–11 and REC–12
also provide for installing interpretive
signs and an information board that
would focus on the history of
hydroelectric power, the falls, and the
fishery resources. Including a provision
in the HPMP to coordinate public
information on archaeological and
historic resources at the project with
REC–11 and REC–12 interpretive
signage could lead to an enhanced
visitor experience and encourage
protection of environmental and
cultural resources.
Okanogan PUD proposes to: (1)
Maintain records relating to cultural
resources located within the APE; (2)
E:\FR\FM\17MYN2.SGM
17MYN2
sroberts on DSK69SOYB1PROD with NOTICES
28596
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
ensure confidentiality of these records;
(3) provide any recovered cultural
materials to BLM for inclusion in its
repository; and (4) consider donating
historic materials recovered from the
historic Enloe powerhouse to the
Okanogan Historical Society or another
group. This proposal would address
Interior’s recommendation regarding the
collection of cultural resource materials
and would ensure that such materials
are properly conserved and also
accessible, under properly controlled
conditions, to those with appropriate
research or cultural interests.
Okanogan PUD’s proposal to
implement a long-term monitoring
program at all sites within the project
boundary APE would help determine if
any observed effects are project-related.
This would enable Okanogan PUD to
determine the need for and frequency of
future monitoring. It would also assist
in the development of appropriate
treatment measures if disturbances are
identified as being related to projectrelated activities. As recommended by
Interior, including a provision in the
HPMP to develop a more detailed
monitoring plan would ensure that
monitoring is undertaken and in a way
that documents and quantifies resulting
data for consideration. This measure
could also apply to the side channel
enhancement site.
Okanogan PUD determined that
erosion has the potential to adversely
affect site 45OK532 and that the site
would also be adversely affected by road
construction. In its HPMP, Okanogan
PUD discusses the possibility of capping
the site to protect it from road
construction activities and use. A 1992
study by the Corps (Mathewson et al.,
1992) found that burial of archaeological
resources increases the vertical load on
sites, causes changes in chemical
characteristics (including pH) of soils,
and increases the moisture content.
These changes can affect the
preservation of site components,
particularly organic materials such as
botanical and faunal remains. The Corps
concluded that site burial ‘‘* * * should
be used only when preservation of the
site by burial is ensured.’’ If the
processes that result from burial are
deemed to be detrimental to the site
components, other preservation
techniques should be considered
(Mathewson et al., 1992). While capping
of site 45OK532 may be viewed as a
protective measure, further
consideration of this measure within the
HPMP, particularly as it may relate to
site preservation, would ensure that
archaeological materials contained
within the site are not inadvertently
damaged over the long term.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
Okanogan PUD identifies measure
ARCH–05 (Determine Potential
Recreational Impacts to Archaeological
Sites) and states that it is ‘‘discussing the
proposed recreation plan with the
CRWG to determine if there would be
impacts on archaeological sites in the
vicinity of the recreation facilities’’
(Okanogan PUD, 2008a). Okanogan PUD
further explains that the HPMP would
specify necessary mitigation and
treatment measures to protect
prehistoric sites from recreational
effects and that its staff would be
provided with information about the
potential for archaeological deposits to
be found. While the HPMP includes
employee training and a protocol for
pre-project review, the HPMP does not
specifically address measure ARCH–05
and it does not address proposed or
future recreational improvements.
Revision of the HPMP to specifically
address recreational use and currently
proposed or future project recreation
sites would be consistent with ARCH–
05 and would ensure that cultural sites
are considered during recreation
planning.
Also, Okanogan PUD explains in its
May 2009 HPMP that because site
45OK566 is situated on a terrace
outcrop above the river, the potential for
project-related erosion at the site is
limited. However, Okanogan PUD
acknowledges that the site may also be
affected by increased public use. The
site sketch map contained within the
site record depicts a foot path leading to
the site; however, the HPMP concludes
that there would be no adverse effects
on site 45OK566 resulting from project
operation. Absent information related to
the assessment of effects at this site, it
is uncertain how the determination of
‘‘no adverse effects’’ to this site was
made. A discussion of this assessment
within a revised HPMP and how it may
related to measure ARCH–05 would
provide clarification.
In its HPMP, Okanogan PUD
acknowledges that modifications to
Enloe dam would affect this historic
structure, but recommends that, if
undertaken in accordance with the
Secretary of the Interior’s Standards for
Rehabilitation, effects would not be
adverse. Implementation of Okanogan
PUD’s proposed guidance contained
within the HPMP with respect to
construction and maintenance standards
would ensure that the qualities of this
property that make it eligible for the
National Register are not diminished
over the license term. However, in its
HPMP, Okanogan PUD states that HAER
documentation of Enloe dam has been
previously undertaken, but does not
discuss the purpose of the Enloe dam
PO 00000
Frm 00092
Fmt 4701
Sfmt 4703
HAER documentation nor does it
provide evidence of Washington SHPO
or Park Service acceptance of the
documentation as a resolution of an
adverse effect. Typically, HAER
documentation is completed as
mitigation of an adverse effect on a
historic property. If HAER
documentation was undertaken to
resolve such effects, and agency
concurrence has been received,
additional measures may not be
necessary. Including a discussion in a
revised HPMP regarding the purpose of
HAER documentation and agency
consultation would provide
clarification.
In section 4.2 of the HPMP, Okanogan
PUD states that under this plan, the
existing Enloe powerhouse would be
demolished. However, in section 5.14 of
the HPMP, Okanogan PUD explains that
it is soliciting outside parties to assume
ownership of the structure. Revision of
the HPMP to correct and clarify
Okanogan PUD’s intent with regard to
the powerhouse would be appropriate.
Additionally, Appendix C of the HPMP
states that the transfer, lease, or sale of
property out of federal ownership
without adequate and legally
enforceable restrictions or conditions to
ensure long-term preservation of the
property’s historic significance would
be an adverse effect in accordance with
the implementing regulations of the
NHPA found at 36 CFR800.5(a)(2)(vii).
Consequently, consultation with the
CRWG regarding the resolution of
adverse effects on the historic Enloe
powerhouse prior to any transfer or
demolition would ensure compliance
with section 106.
Two TCPs have been identified
within the project boundary APE. In its
Section 106 Technical Report,
Okanogan PUD (2008b) states that shortterm effects on one of the identified
TCPs would not be adverse and that
construction of the new powerhouse
would have an adverse visual effect. In
its HPMP, Okanogan PUD also implies
that there would be a potential adverse
effect on this resource as a result of any
demolition activities at the historic
Enloe powerhouse. While Okanogan
PUD does not propose any measures to
mitigate visual effects on this TCP in its
HPMP, it proposes to monitor this
resource during any powerhouse
demolition activities. Inclusion of
measures within the HPMP to mitigate
adverse visual effects and a requirement
to consult with the Colville prior to
initiating demolition activities, in
addition to monitoring, would ensure
that this resource is addressed in
accordance with section 106.
E:\FR\FM\17MYN2.SGM
17MYN2
28597
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
3.3.9
Socioeconomics
3.3.9.1
Affected Environment
The City of Oroville is the nearest
community, with an estimated
population of 1,653 in 2000 (U.S.
Bureau of the Census, 2009a). The U.S.
Bureau of the Census reports that the
top three industries in the City of
Oroville in terms of employment were
educational, health, and social services
(18.2 percent); retail trade (17.1
percent); and agriculture, forestry,
fishing and hunting, and mining (11.2
percent).
Table 19 presents population and
other demographic data for the City of
Oroville, Okanogan County, and for
Washington from the U.S. Bureau of the
Census.
TABLE 19—POPULATION CHARACTERISTICS OF THE CITY OF OROVILLE, OKANOGAN COUNTY, AND WASHINGTON
[Source: U.S. Bureau of the Census, 2009a,b]
Population
estimate
2008
Population
2000
City of Oroville .....................................................................
Okanogan County ................................................................
Washington ..........................................................................
a1999
1,653
39,564
5,894,143
Private
nonfarm
employment
2007
........................
40,033
6,549,224
........................
8,718
b 2,501,684
Median
household
income
2008
Persons below
poverty level
2008
(percent)
a $30,114
a 28.9
37,900
58,081
19.6
11.3
statistics.
data not distributed by county.
bIncludes
sroberts on DSK69SOYB1PROD with NOTICES
The U.S. Census Bureau reports that
in 2000 there were approximately 7.5
persons per square mile in Okanogan
County and 88.6 persons per square
mile in Washington as a whole.
Population increases between 2000 and
2008 have shown a slight 1.2 percent
increase in Okanogan County (U.S.
Bureau of the Census, 2009b). The very
slow growth in Okanogan County can be
accounted for by the remoteness of most
of the county from population centers.
3.3.9.2 Environmental Effects
In terms of construction employment,
Okanogan PUD estimates a small
increase in engineering and
construction management employment
of 1 person or 0.4 full-time equivalents
(FTE) in year one, ramping up to 3.5
FTE at the start of year two. It would
peak at 4 FTE during that year, and then
stabilize throughout year three at 3 FTE.
Construction employment requirements
begin at the start of year two, with 2.5
FTE, increasing to 46.5 FTE near the
end of year two. Construction during
year three would require 27 FTE at the
start of the year, ramping down to 9 FTE
by the end of the three-year construction
phase.
The Enloe Project would have an
unmanned power station. The increased
human-hours associated with the
operation and maintenance of the
project would be 8,000 hours (or
approximately 4 FTE) per year.
However, due to the ability of current
Okanogan PUD staff to accommodate
these needs, there would be no longterm increase in on-site employment or
payroll due to the operation of the
project.
The Enloe Project would benefit the
local economy by providing a reliable
source of power and by providing
recreational opportunities. Okanogan
VerDate Mar<15>2010
17:53 May 16, 2011
Jkt 223001
PUD did not propose any measures
specifically associated with
socioeconomic resources.
Our Analysis
Operation of the proposed project by
Okanogan PUD would provide an
economical source of power to the
region, helping to support future
economic growth. The additional
spending associated with implementing
various resource measures, such as the
rehabilitation of degraded vegetation
and the improvement of developed and
dispersed recreation areas, would
provide for some additional
employment during the period of
construction and monitoring.
3.4 No-Action Alternative
Under the no-action alternative, the
Enloe Project would not be constructed.
There would be no changes to the
physical, biological, or cultural
resources of the area and electrical
generation from the project would not
occur. The power that would have been
developed from a renewable resource
would have to be replaced from
nonrenewable fuels.
4.0 Developmental Analysis
In this section, we look at the Enloe
Project’s use of the Similkameen River
for hydropower purposes to see what
effect various environmental measures
would have on the project’s costs and
power generation. Under the
Commission’s approach to evaluating
the economics of hydropower projects,
as articulated in Mead Corp.,41 the
Commission compares the current
project to an estimate of the cost of
obtaining the same amount of energy
and capacity using a likely alternative
source of power for the region (cost of
alternative power). In keeping with
PO 00000
Frm 00093
Fmt 4701
Sfmt 4703
Commission policy as described in
Mead Corp., our economic analysis is
based on current electric power cost
conditions and does not consider future
escalation of fuel prices in valuing the
hydropower project’s power benefits.41
For each of the licensing alternatives,
our analysis includes an estimate of: (1)
The cost of individual measures
considered in the EA for the protection,
mitigation and enhancement of
environmental resources affected by the
project; (2) the cost of alternative power;
(3) the total project cost (i.e., for
construction, operation, maintenance,
and environmental measures); and (4)
the difference between the cost of
alternative power and total project cost.
If the difference between the cost of
alternative power and total project cost
is positive, the project produces power
for less than the cost of alternative
power. If the difference between the cost
of alternative power and total project
cost is negative, the project produces
power for more than the cost of
alternative power. This estimate helps
to support an informed decision
concerning what is in the public interest
with respect to a proposed license.
However, project economics is only one
of many public interest factors the
Commission considers in determining
whether, and under what conditions, to
issue a license.
4.1 Power and Economic Benefits of
the Project
Table 20 summarizes the assumptions
and economic information we use in our
analysis. This information was provided
41 See Mead Corporation, Publishing Paper
Division, 72 FERC ¶ 61,027 (July 13, 1995). In most
cases, electricity from hydropower would displace
some form of fossil-fueled generation, in which fuel
cost is the largest component of the cost of
electricity production.
E:\FR\FM\17MYN2.SGM
17MYN2
28598
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
insurance costs; net investment (the
total investment in power plant
facilities remaining to be depreciated);
estimated future capital investment
required to maintain and extend the life
of plant equipment and facilities;
by Okanogan PUD in its license
application. We find that the values
provided by Okanogan PUD are
reasonable for the purposes of our
analysis. Cost items common to all
alternatives include: Taxes and
relicensing costs; normal operation and
maintenance cost; and Commission fees.
We do not include, in our analysis, any
measures with minimal, zero, or
unknown costs.
TABLE 20—PARAMETERS FOR THE ECONOMIC ANALYSIS OF THE ENLOE HYDROELECTRIC PROJECT
[Source: Okanogan PUD, 2008a, as modified by Staff]
Parameter
Value
Period of analysis (years) ................................................................................................................................................................
Initial construction cost, $a ..............................................................................................................................................................
Operation and maintenance of project, $/yearb ..............................................................................................................................
Energy value ($/MWh)c ...................................................................................................................................................................
Capacity rate ($/kilowatt-year)d .......................................................................................................................................................
Interest rate (%)e .............................................................................................................................................................................
Discount rate (%)f ............................................................................................................................................................................
30
28,887,550
894,470
67.88
157
4.5
4.5
Notes:
a License application, table D–1, adjusted to 2010 dollars.
b License application, table D–1, adjusted to 2010 dollars.
c License application, table D–4, total value divided by total average annual generation.
d Staff based on Energy Information Administration Annual Outlook for 2010. This value is based on the amortization and fixed operation and
maintenance cost for a simple-cycle combustion turbine.
e License application, table D–2.
4.2
Comparison of Alternatives
Table 21 summarizes the installed
capacity, annual generation, cost of
alternative power, estimated total
project cost, and difference between the
cost of alternative power and total
project cost for each of the alternatives
considered in this EA: Okanogan PUD’s
proposal and the staff alternative.42
4.2.1
No-Action Alternative
Under the no-action alternative, the
project would not be constructed as
proposed. The dam is managed by the
Okanogan PUD, but because there are no
operational generating facilities, the
project is not subject to a Commission
license.
TABLE 21—SUMMARY OF ANNUAL COST OF ALTERNATIVE POWER AND ANNUAL PROJECT COST FOR THE ALTERNATIVES
FOR THE ENLOE HYDROELECTRIC PROJECT
[Source: Staff]
Okanogan PUD’s
Proposal
Staff Alternative
9.0
44,409
1.14
$3,193,460
71.91
$3,086,990
69.51
$106,470
2.40
9.0
44,409
1.14
$3,193,460
71.91
$3,109,540
70.02
$83,920
1.89
Installed capacity (MW) ...................................................................................................................................
Annual generation (MWh) ................................................................................................................................
Dependable capacity (MW) .............................................................................................................................
Annual cost of alternative power .....................................................................................................................
($/MWh) ...........................................................................................................................................................
Annual project cost ..........................................................................................................................................
($/MWh) ...........................................................................................................................................................
Difference between the cost of alternative power and project cost ................................................................
($/MWh) ...........................................................................................................................................................
sroberts on DSK69SOYB1PROD with NOTICES
4.2.2
Okanogan PUD’s Proposal
Okanogan PUD proposes to construct
a new hydroelectric project using the
existing Enloe dam. Okanogan PUD also
proposes to implement numerous
environmental measures, as presented
in table 23, prior to initial construction,
during construction, and after
construction once the proposed project
is operational. Under Okanogan PUD’s
proposal, the project would have an
installed capacity of 9 MW, and
generate an average of 44,409 MWh of
electricity annually. The average annual
cost of alternative power would be
$3,193,460, or $71.91/MWh. The
average annual project cost would be
$3,086,990, or $69.51/MWh. Overall,
the project would produce power at a
cost that is $106,470, or $2.40/MWh,
less than the cost of alternative power.
4.2.3
Staff Alternative
The staff alternative includes all of
Okanogan PUD’s proposed
environmental measures except for its
proposal to place boulder clusters in
riffles or in plain-bed portions of the
river and entrainment and resident fish
monitoring. Additionally, staff made
modifications and recommended
additional measures. Table 22 shows the
staff-recommended additions, deletions,
and modifications to Okanogan PUD’s
proposed environmental protection and
enhancement measures and the
estimated cost of each. The staff
alternative would have the same
capacity and energy attributes as
Okanogan PUD’s proposal. Under the
staff alternative, the average annual cost
of alternative power would be
42 There are no mandatory conditions filed at this
time.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00094
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
28599
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
$3,193,460, or $71.91/MWh. The annual
project cost would be $3,109,540, or
$70.02/MWh. Overall, the project would
produce power at a cost that is $83,920,
or $1.89/MWh, less than the cost of
alternative power.
4.3 Cost of Environmental Measures
Table 22 gives the cost of each of the
environmental enhancement measures
considered in our analysis. We convert
all costs to equal annual (levelized)
values over a 30-year period of analysis
to give a uniform basis for comparing
the benefits of a measure to its cost.
TABLE 22—COST OF ENVIRONMENTAL MITIGATION AND ENHANCEMENT MEASURES CONSIDERED IN ASSESSING THE
ENVIRONMENTAL EFFECTS OF CONSTRUCTING AND OPERATING THE PROPOSED ENLOE HYDROELECTRIC PROJECT
[Source: Staff]
Enhancement/Mitigation measures
Capital cost
(2010$) a
Entity
Annual cost
(2010$) ;a
Levelized annual
cost
(2010$)
Geology and Soils Resources
1. Develop and implement an ESCP
(WQ–06).
2. Develop and implement a CSMP
(WQ–08).
3. Develop and implement a Spoil Disposal Plan.
Okanogan PUD, ..................................
Interior—10(j), ......................................
NMFS—10(j), .......................................
Staff .....................................................
Okanogan PUD, Staff ..........................
$21,510 .................
$0 ..........................
$1,460
80,660 ...................
0 ............................
5,460
Interior, Washington DOE, Staff ..........
5,000 b ..................
0 ............................
340
Water and Water Quality
1. Monitor water temperatures at three
locations for a period of 5 years
(WQ–01).
2. Provide aeration in the turbine draft
tubes (WQ–03).
3. Monitor TDG and DO at the project
intake and in the pool below the falls
for a period of 5 years (WQ–04).
4. Monitor DO at the project intake and
in the pool below the falls for the
term of license.
5. Develop and file with the Commission, in consultation with the TRG, a
water quality monitoring plan including: Selecting the monitoring locations; filing a report at the end of
year 5 documenting the results of
monitoring and recommendations for
the need for continued monitoring
development, and conducting water
temperature, TDG, and DO monitoring for a period longer than 5
years if needed.
6. At project initiation, develop and implement the Spill Plan including a
hazardous substance plan (WQ–07).
Okanogan
PUD,
NMFS—10(j), Staff.
Interior—10(j),
0 ............................
580 ........................
580
Okanogan PUD, NMFS—10(j), Staff ..
43,020 ...................
2,150 .....................
5,060
Okanogan PUD, Staff ..........................
26,890 ...................
7,000 for 1st 5
years.
3,850
NMFS ..................................................
0 ............................
7,000 for years 6–
30.
5,500
Staff .....................................................
10,000 b ................
0 ............................
680
Okanogan PUD, NMFS—10(j), Staff ..
26,890 ...................
0 ............................
1,820
sroberts on DSK69SOYB1PROD with NOTICES
Aquatic Resources
1. Implement a Blasting Plan and use
BMPs (FISH–01).
2. Place two boulder clusters in riffles
or in flat sections of the river (FISH–
02).
3. Ensure that logs and other large
woody debris can pass over the dam
spillway during the annual flood and,
if needed, transport some large
woody debris around the dam and
place it in the river downstream of
the dam to provide fish habitat
(FISH–03).
4. Design and construct the intake
trashracks with a 1-inch bar spacing
(FISH–04).
VerDate Mar<15>2010
17:06 May 16, 2011
Okanogan PUD, Staff ..........................
107,540 .................
0 ............................
7,280
Okanogan PUD ...................................
64,520 ...................
0 ............................
4,370
Okanogan PUD, Interior—10(j), Staff
0 ............................
4,300 .....................
4,300
Okanogan PUD, Staff ..........................
32,260 ...................
0 ............................
2,180
Jkt 223001
PO 00000
Frm 00095
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
28600
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
TABLE 22—COST OF ENVIRONMENTAL MITIGATION AND ENHANCEMENT MEASURES CONSIDERED IN ASSESSING THE ENVIRONMENTAL EFFECTS OF CONSTRUCTING AND OPERATING THE PROPOSED ENLOE HYDROELECTRIC PROJECT—Continued
[Source: Staff]
Levelized annual
cost
(2010$)
Enhancement/Mitigation measures
Entity
Capital cost
(2010$) a
Annual cost
(2010$) ;a
5. Design, construct, and file detailed
drawings of the intake fish screen
with a schedule to build the facility
before commercial operation starts.
6. Monitor seasonal variation in entrainment
susceptibility;
observe
trauma and mortality caused by entrainment, and monitor fish population distribution and abundance in
the reservoir (FISH–05).
7. Install tailrace barrier nets in the
powerhouse draft tubes including annual inspection and maintenance
(FISH–06).
8. File detailed design drawings of the
conical net barrier at least 1 year before the start of land-disturbing or
land-clearing activities.
9. Monitor tailrace barriers with video
cameras (FISH–07).
10. Develop and implement a written
operation plan for the tailrace barriers.
11. Develop and implement a
postconstruction
evaluation
and
monitoring plan for the tailrace barrier.
12. Develop and implement an inspection and maintenance plan for the
tailrace barrier.
13. Develop a powerhouse operation
plan to provide 48 hours of flow continuation in the event of emergency
project shutdown.
14. Develop and implement a project
operations and compliance monitoring plan.
15. Design and construct the tailrace to
avoid effects on fish (FISH–09).
16. Enhance an existing side channel
(FISH–10).
Interior, Washington DFW ...................
16–24M .................
0 ............................
1.1–1.6M
Okanogan PUD, Interior ......................
107,540 .................
0 ............................
7,280
Okanogan
PUD,
Interior—10(j),
NMFS—10(j), Washington DFW—
10(j), Staff.
26,510 ...................
5,380 .....................
7,180
Okanogan
PUD,
Interior—10(j),
NMFS—10(j), Washington DFW—
10(j), Staff.
2,000 b ..................
0 ............................
140
Okanogan PUD, Interior—10(j), Staff
0 ............................
1,240 .....................
1,240
Okanogan
PUD,
NMFS—10(j), Staff.
Interior—10(j),
5,000 b ..................
0 ............................
340
Okanogan
PUD,
NMFS—10(j), Staff.
Interior—10(j),
10,000 b ................
0 ............................
680
Okanogan
PUD,
NMFS—10(j), Staff.
Interior—10(j),
5,000 b ..................
0 ............................
340
Interior .................................................
5,000 b ..................
0 ............................
340
Staff .....................................................
10,000 b ................
0 ............................
680
Okanogan PUD, Staff ..........................
120,450 .................
0 ............................
8,150
Okanogan
PUD,
Interior—10(j),
NMFS—10(j), Washington DFW—
10(j), Staff.
Okanogan
PUD,
Interior—10(j),
NMFS—10(j), Washington DFW—
10(j), Staff.
Interior .................................................
397,510 .................
3,310 .....................
30,210
0 ............................
11,950 ...................
11,950
5,000 d ..................
50,000 d ................
50,340
Washington DFW ................................
0 ............................
50,000 d ................
50,000
Interior .................................................
0 d .........................
0 d .........................
0d
Okanogan PUD, Washington DFW,
Staff.
16,130 ...................
10,750 ...................
11,840
sroberts on DSK69SOYB1PROD with NOTICES
17. Implement a gravel supplementation program (FISH–11).
18. File a Resident Fish Habitat Management Plan that includes provisions for WQ–01, FISH–05, BOTA–
01, –02, –04, –05, to stock sterile
triploid trout, and to implement a fish
habitat monitoring plan.
19. File a Fisheries Enhancement Plan
that includes provisions for FISH–10,
FISH–11, and to stock sterile triploid
trout.
20. File a Fisheries Enhancement Plan
that includes provisions for FISH–03,
FISH–10, and FISH–11.
21. Develop a biological review process which includes provisions for establishing a TRG to provide ongoing
refinement and measure effectiveness of environmental measures
(FISH–12).
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00096
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
28601
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
TABLE 22—COST OF ENVIRONMENTAL MITIGATION AND ENHANCEMENT MEASURES CONSIDERED IN ASSESSING THE ENVIRONMENTAL EFFECTS OF CONSTRUCTING AND OPERATING THE PROPOSED ENLOE HYDROELECTRIC PROJECT—Continued
[Source: Staff]
Levelized annual
cost
(2010$)
Enhancement/Mitigation measures
Entity
Capital cost
(2010$) a
Annual cost
(2010$) ;a
22. Develop a fisheries monitoring
database for organizing and storing
monitoring data related to aquatic resources for use by the TRG to monitor effectiveness of measures
(FISH–13).
23. Develop an adaptive management
plan within 1 year of license
issuance for the protection and mitigation of impacts to fish and wildlife
resources.
24. Conduct a paleolimnological study
of historical anadromy above Enloe
dam.
Okanogan PUD, Staff ..........................
48,390 ...................
0 ............................
3,280
Washington DFW ................................
10,000 b ................
0 ............................
680
CRITFC ...............................................
100,000 b ..............
0 ............................
6,770
Minimum Flow Proposal
1. Provide a minimum flow of 10 cfs
year-round and 30 cfs from mid-July
to mid-September, monitor temperature and DO, select an appropriate
minimum flow release location, and
make appropriate project modifications to provide minimum flow releases for the bypassed reach.
2. Determine appropriate thresholds for
downramping rates after emergency
shutdown immediately downstream
of Enloe dam.
3. Establish minimum instream flows in
the bypassed reach varying from
400 cfs to 3,400 cfs depending on
the month.
Okanogan PUD, Washington DFW,
Washington DOE, Staff.
5,000 b ..................
37,610 b ................
37,940
Okanogan PUD, Washington DFW,
Washington DOE, Staff.
5,000 b ..................
0 ............................
340
American Rivers et al. .........................
0 ............................
1,295,830 b ...........
1,295,830
sroberts on DSK69SOYB1PROD with NOTICES
Terrestrial Resources
1. Implement the Vegetation Plan, including goals, the species to be
used, methods, and benchmarks of
success for botanical resources
(BOTA–01).
2. Develop a Vegetation Resource
Management Plan.
3. Develop a Wildlife Management
Plan including planting native riparian trees, grasses, and shrubs.
4. Plant riparian vegetation along the
west and east banks of the reservoir
shoreline (BOTA–02).
5. Return existing shoreline road to
natural conditions, eliminate the current interruption between the shoreline and upland habitat, relocate access road segment, and develop trail
to provide recreation access to the
river below the dam on the east
bank (BOTA–03 and part of REC–
13).
6. Plant woody riparian species in the
riparian area along the abandoned
road corridor (BOTA–04).
7. Plant woody riparian vegetation
along the east and west banks of the
reservoir downstream of Shanker’s
Bend (BOTA–05).
VerDate Mar<15>2010
17:06 May 16, 2011
Okanogan PUD, Interior—10(j), Washington DFW—10(j), Staff.
32,260 ...................
0 ............................
2,180
Interior—10(j), Washington DFW—
10(j).
Interior, Washington DFW ...................
10,000 b ................
0 ............................
680
10,000 b ................
0 ............................
680
Okanogan PUD, Interior—10(j), Washington DFW—10(j), Staff.
32,260 ...................
0 ............................
2,180
Okanogan PUD, Interior—10(j), Washington DFW—10(j), Staff.
376,390 .................
1,450 .....................
26,920
Okanogan PUD, Interior—10(j), Washington DFW—10(j), Staff.
16,130 ...................
0 ............................
1,090
Okanogan PUD, Interior—10(j), Washington DFW—10(j), Staff.
21,510 ...................
0 ............................
1,460
Jkt 223001
PO 00000
Frm 00097
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
28602
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
TABLE 22—COST OF ENVIRONMENTAL MITIGATION AND ENHANCEMENT MEASURES CONSIDERED IN ASSESSING THE ENVIRONMENTAL EFFECTS OF CONSTRUCTING AND OPERATING THE PROPOSED ENLOE HYDROELECTRIC PROJECT—Continued
[Source: Staff]
Levelized annual
cost
(2010$)
sroberts on DSK69SOYB1PROD with NOTICES
Enhancement/Mitigation measures
Entity
Capital cost
(2010$) a
Annual cost
(2010$) ;a
8. Install grazing control measures including fencing (BOTA–06).
9. Monitor restored areas annually for
5 years and replant as necessary,
and provide annual reports of the
monitoring results (BOTA–07).
10. Additional monitoring of restored
areas.
11. Employ BMPs including measures
such as flagging and temporarily
fencing any wetland and riparian
vegetation in the vicinity of the
project, and limiting construction and
maintenance-related disturbance of
sensitive habitats to the extent possible (BOTA–08).
12. Develop and implement an environmental training program (BOTA–
09).
13. Provide a biological monitor during
construction (BOTA–10).
14. Implement the Noxious Weed Control Program (BOTA–11).
15. Survey disposal sites and control
noxious weeds by implementing control measures prior to spoil disposal
(BOTA–12).
16. Hydroseed disposal sites using native upland species (BOTA–13).
17. Conduct survey for Ute ladies’tresses prior to, during, and
postconstruction (BOTA–14) for 3
years.
18. Develop an Ute ladies’-tresses plan
after agencies consultation, and if
present in project areas, develop
plan to avoid or minimize effects.
19. Conduct survey for Ute ladies’tresses within 1 year of license
issuance, and every 5 years thereafter.
20. GIS mapping and development of
a digital database for sensitive species, noxious weeds, and habitat
restoration sites.
21. Place the project transmission line
in location to reduce adverse effects
of the line on raptors and other birds
(WILD–01).
22. Concentrate construction activities
to occur in summer and early fall
(WILD–02).
23. Conduct pre-disposal site survey
for wildlife and time clearing vegetation at spoil disposal sites (WILD–
03).
24. Install nest boxes for small birds in
areas that lack snags or natural tree
cavities.
25. Retain dead tress and install 10 artificial perch poles along the reservoir shoreline.
26. Install barriers on irrigation canal
tunnels to prevent human entry while
still allowing use by bats.
Okanogan PUD, Interior—10(j), Washington DFW—10(j), Staff.
Okanogan PUD, Staff ..........................
26,890 ...................
0 ............................
1,820
16,130 ...................
2,900 .....................
3,990
b
..............
0 ............................
6,770
VerDate Mar<15>2010
17:06 May 16, 2011
Interior—10(j), Washington DFW—
10(j).
Okanogan PUD, Interior—10(j), Washington DFW—10(j), Staff.
100,000
2,690 .....................
0 ............................
180
Okanogan PUD, Staff ..........................
5,380 .....................
0 ............................
360
Okanogan PUD, Interior—10(j), Washington DFW—10(j), Staff.
Okanogan PUD, Interior—10(j), Washington DFW—10(j), Staff.
Okanogan PUD, Staff ..........................
77,430 ...................
0 ............................
5,240
13,980 ...................
1,340 .....................
2,290
3,230 .....................
0 ............................
220
Okanogan PUD, Staff ..........................
14,200 ...................
0 ............................
960
Okanogan PUD ...................................
0 ............................
1,820 .....................
1,820
Staff .....................................................
10,000 b ................
0 ............................
680
Interior—10(j),
10(j).
DFW—
70,000 b ................
0 ............................
4,740
Interior .................................................
15,000 b ................
0 ............................
1,020
Okanogan PUD, Interior—10(j), Washington DFW—10(j), Staff.
540 ........................
0 ............................
40
Okanogan PUD, Interior—10(j), Washington DFW—10(j), Staff.
134,430 .................
0 ............................
9,100
Okanogan PUD, Staff ..........................
3,230 .....................
0 ............................
220
Interior, Washington DFW ...................
25/box ...................
0 ............................
minimal
Interior, Washington DFW, Staff .........
10,000 b ................
0 ............................
680
Interior, Washington DFW ...................
2,000 b ..................
0 ............................
140
Jkt 223001
PO 00000
Washington
Frm 00098
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
28603
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
TABLE 22—COST OF ENVIRONMENTAL MITIGATION AND ENHANCEMENT MEASURES CONSIDERED IN ASSESSING THE ENVIRONMENTAL EFFECTS OF CONSTRUCTING AND OPERATING THE PROPOSED ENLOE HYDROELECTRIC PROJECT—Continued
[Source: Staff]
Enhancement/Mitigation measures
Annual cost
(2010$) ;a
Capital cost
(2010$) a
Entity
Levelized annual
cost
(2010$)
sroberts on DSK69SOYB1PROD with NOTICES
Recreation and Land Use Resources
1. Revise and implement the Fence
Plan in coordination with the Recreation Management Plan to include
(a) installation of barricades and
fencing on the east side of the dam
and the area below the dam; (b) use
of non-barbed wire at the recreation
area; and (c) installation of a stock
watering tank north of the proposed
recreation site as an alternative
source of drinking water for all grazing cattle with rights to this area
(REC–01).
2. Provide recreation access below
Enloe dam on the east bank by developing a trail to the river below the
dam (REC–02).
3. Transfer to Okanogan County ownership rights to the trestle bridge that
is located on the west side of the
river with certain conditions (REC–
03).
4. Improve the existing informal boat
ramp located on the east bank upstream of the dam (REC–04).
5. Clean up and restore wooded area
on east bank of the reservoir (REC–
05).
6. Develop an interpretive publication
including a map illustrating public access and recreation sites (REC–06).
7. Remove existing trash and conduct
annual cleanup activities (REC–07).
8. Develop parking area and install a
vault toilet on the east bank and upstream of Enloe dam (REC–08).
9. Install picnic tables near the parking
area taking advantage of existing
trees for shading (REC–09).
10. Develop primitive campsites near
the parking and picnic area (REC–
10).
11. Install one interpretive sign near
the parking and picnic area and one
sign near the abutment of the old
powerhouse access bridge (REC–
11).
12. Place an information board near
Enloe dam (REC–12).
13. Finalize and implement the Recreation Management Plan (REC–13).
14. Implement major recreational development at the BLM-owned Miner’s Flat site and bring into project
boundary.
15. Develop a formal boater take-out
area at Miner’s Flat, upgrade the access roads to the take-out if necessary, and include approximately 1
acre on which the take-out would be
located within the project boundary.
16. Conduct recreation monitoring and
provide Recreation Management
Plan updates.
VerDate Mar<15>2010
17:06 May 16, 2011
Okanogan PUD, Interior, Staff ............
91,410 c .................
0 ............................
6,190
Okanogan PUD, Interior, Staff ............
5,000 .....................
2,000 .....................
2,340
Okanogan PUD, Interior, Staff ............
10,750 ...................
0 ............................
730
Okanogan PUD, Interior, Staff ............
80,660 ...................
0 ............................
5,460
Okanogan PUD, Interior, Staff ............
10,750 ...................
0 ............................
730
Okanogan PUD, Interior, Staff ............
5,380 .....................
0 ............................
360
Okanogan PUD, Interior, Staff ............
5,380 .....................
1,610 .....................
1,970
Okanogan PUD, Interior, Staff ............
107,540 .................
0 ............................
7,280
Okanogan PUD, Interior, Staff ............
16,130 ...................
0 ............................
1,090
Okanogan PUD, Interior, Staff ............
26,890 ...................
0 ............................
1,820
Okanogan PUD, Interior, Staff ............
5,380 .....................
0 ............................
360
Okanogan PUD, Interior, Staff ............
2,690 .....................
0 ............................
180
Okanogan PUD, Interior, Staff ............
43,020 ...................
0 ............................
2,910
Interior .................................................
125,000 b ..............
15,000 b ................
23,460
BLM, Staff ............................................
35,000 b ................
1,000 b ..................
3,370
Interior, Staff ........................................
0 ............................
5,000 b ..................
5,000
Jkt 223001
PO 00000
Frm 00099
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
28604
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
TABLE 22—COST OF ENVIRONMENTAL MITIGATION AND ENHANCEMENT MEASURES CONSIDERED IN ASSESSING THE ENVIRONMENTAL EFFECTS OF CONSTRUCTING AND OPERATING THE PROPOSED ENLOE HYDROELECTRIC PROJECT—Continued
[Source: Staff]
Levelized annual
cost
(2010$)
Enhancement/Mitigation measures
Entity
Capital cost
(2010$) a
Annual cost
(2010$) ;a
17. Provide for recreation site grounds
maintenance.
18. Rebuild the footbridge across the
Similkameen River.
19. Develop and post a snow plowing
schedule annually for the project access road.
20. Remove the small, deteriorated,
privately-owned pump house at the
north end of the proposed Enloe
dam recreation area.
21. Remove the one small, deteriorated building on Okanogan PUD
land at the north end of the proposed Enloe dam recreation area.
22. Maintain the existing signs and
system of safety cables and grab
ropes above the dam, install canoe/
kayak take-out signs, install dam
safety/warning signs for boaters, and
install a log boom access the powerhouse intake channel to protect
boaters (SAFETY–01).
23. Identify options for preventing public access to the old powerhouse
(SAFETY–03).
24. Develop and implement the Safety
During Construction Plan.
25. Develop and implement a Law Enforcement, Fire, and Emergency
Services Plan.
26. Develop a Fire Suppression Program.
Interior .................................................
0 ............................
50,000 b ................
50,000
Interior .................................................
10,000 b ................
500 b .....................
1,180
Staff .....................................................
1,000 b ..................
0 ............................
70
BLM .....................................................
2,500 b ..................
0 ............................
170
BLM, Staff ............................................
2,500 b ..................
0 ............................
170
Okanogan PUD, Staff ..........................
10,750 ...................
2,690 .....................
3,420
Okanogan PUD, Staff ..........................
10,750 ...................
0 ............................
730
Okanogan PUD, Interior, Staff ............
5,000 b ..................
0 ............................
340
Interior .................................................
5,000 b ..................
15,000 b ................
15,340
Staff .....................................................
2,000 b ..................
5,000 b ..................
5,140
Aesthetic Resources
1. Use visually-compatible colors and
building materials for construction
(AES–01).
2. Consult with the Colville during restoration activities (AES–02).
3. Revise and implement the Aesthetics Management Plan, including
provisions of AES–01, AES–02, and
AES–04, and consultation with BLM
on the revision of the aesthetic analysis.
Okanogan PUD, Interior, Staff ............
10,750 ...................
0 ............................
730
Okanogan PUD, Interior, Staff ............
21,510 ...................
0 ............................
1,460
Interior, Staff ........................................
5,000 b ..................
0 ............................
340
sroberts on DSK69SOYB1PROD with NOTICES
Cultural Resources
1. Solicit a new owner of the existing
historic Enloe powerhouse within 4
years from issuance of a license
(HIST–01).
2. Allow at least 5 years during which
Okanogan PUD would solicit and review offers to parties that might be
interested in acquiring the historic
Enloe powerhouse.
3. If a qualified owner is not identified
for the existing historic powerhouse,
consult with the CRWG, which includes the Commission, prior to
demolition of the historic Enloe powerhouse (HIST–02).
VerDate Mar<15>2010
17:06 May 16, 2011
Okanogan PUD, Interior, Staff ............
5,380 .....................
0 ............................
360
Interior .................................................
4,390 b ..................
0 ............................
300
Okanogan PUD, Staff ..........................
129,050 .................
0 ............................
8,730
Jkt 223001
PO 00000
Frm 00100
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
28605
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
TABLE 22—COST OF ENVIRONMENTAL MITIGATION AND ENHANCEMENT MEASURES CONSIDERED IN ASSESSING THE ENVIRONMENTAL EFFECTS OF CONSTRUCTING AND OPERATING THE PROPOSED ENLOE HYDROELECTRIC PROJECT—Continued
[Source: Staff]
Levelized annual
cost
(2010$)
Enhancement/Mitigation measures
Entity
Capital cost
(2010$) a
Annual cost
(2010$) ;a
4. Install interpretive panels about the
historic powerhouse (HIST–03).
5. Review and reach agreement on the
May 2009 HPMP and incorporate information into a PA (HIST–04).
6. Monitor effects of shoreline fluctuations on archaeological sites in
shoreline areas, and mitigate, as
needed (ARCH–01).
7. Avoid known National Register-eligible archaeological sites to prevent
damage during construction (ARCH–
02).
8. Monitor eligible sites during construction activities to avoid damage
to these sites (ARCH–03).
9. Develop and implement an inadvertent discovery plan if a site is discovered during construction and include training of staff and construction workers about the potential for
discovery of archaeological deposits
(ARCH–04).
10. Determine if there would be effects
on archaeological sites in the vicinity
of recreation facilities (ARCH–05).
11. Revise the May 2009 HPMP (as
identified in section 3).
12. Include in the revised HPMP provisions for: (a) Further consideration of
capping site 45OK532; (b) a description of the proposed side-channel
enhancement site; (c) two separate
defined APEs; (d) consultation with
the CRWG regarding the resolution
of adverse effects on the historic
Enloe powerhouse; and (e) re-evaluating the Oroville-Tonasket Irrigation
Canal for National Register-eligibility.
Okanogan PUD, Interior, Staff ............
26,890 ...................
0 ............................
1,820
Okanogan PUD ...................................
5,000 b ..................
0 ............................
340
Okanogan PUD, Interior, Staff ............
69,900 ...................
0 ............................
4,730
Okanogan PUD, Interior, Staff ............
16,130 ...................
0 ............................
1,090
Okanogan PUD, Interior, Staff ............
20,000 b ................
0 ............................
1,350
Okanogan PUD, Interior, Staff ............
16,130 ...................
0 ............................
1,090
Okanogan PUD, Interior, Staff ............
10,000 b ................
0 ............................
680
Interior, Staff ........................................
16,000 e ................
10,000 e ................
11,080
Staff .....................................................
52,000 b ................
5,000 b ..................
8,520
a
Unless otherwise noted, all cost estimates are from Okanogan PUD.
Cost estimated by Staff.
c Cost estimated by Okanogan PUD and Staff.
d Cost estimated by Staff and includes only addition measures not proposed by Okanogan PUD.
e This staff-estimated cost includes all of the revisions to the HPMP that Interior recommends. Staff does not recommend that Okanogan PUD
needs to allow 5 years to solicit entities that might be interested in acquiring the historic Enloe powerhouse; there is no additional cost for this
measure.
b
5.0 Conclusions and
Recommendations
5.1
Comparison of Alternatives
sroberts on DSK69SOYB1PROD with NOTICES
In this section we compare the
development and non-developmental
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
effects of Okanogan PUD’s proposal and
Okanogan PUD’s proposal as modified
by staff (staff alternative).
We estimate the annual generation of
the project under the two alternatives
identified above. Our analysis shows
PO 00000
Frm 00101
Fmt 4701
Sfmt 4703
that the annual generation would be
44,409 MWh for the proposed action
and the staff alternative.
We summarize the environmental
effects of the action alternatives in Table
23.
E:\FR\FM\17MYN2.SGM
17MYN2
28606
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
TABLE 23—SUMMARY OF KEY DIFFERENCES IN THE POTENTIAL EFFECTS OF OKANOGAN PUD’S PROPOSAL AND THE
STAFF ALTERNATIVE
[Source: Staff]
Resource/issue
Okanogan PUD proposal
Staff alternative
Spoil Disposal Plan ..............
No provisions for spoil disposal. .....................................
Water Quality .......................
Reduced TDG from diversion of water around falls, and
adequate DO from aeration of the draft tube downstream. Adequate temperature and DO in bypassed
reach from minimum flows. Adequate levels ensured
by monitoring, with potential for additional measures.
Protections from erosion and sedimentation during
construction.
Protection of aquatic, recreation, and aesthetics resources from run-of-river operation, minimum flows in
the bypassed reach, and ramping rates both in the
project tailrace and in the bypassed reach.
Potential minor losses of fish from blasting and increased turbidity and sedimentation during construction. Enhanced anadromous fish habitat downstream
of project (including critical habitat for threatened
UCR steelhead) due to decrease in TDG and maintenance of adequate DO levels and temperature, enhanced side channel habitat, woody debris transfer
downstream, gravel augmentation, and new riparian
vegetation. Reduced aquatic habitat in short bypassed reach for resident fish. Minor losses to fish
entrainment, with further evaluation of potential effects to resident fishery. Potential limited benefits to
whitefish in river upstream of project, but potential
negative effect on recreational boating and water
temperatures.
Retention of non-hazard dead trees along the reservoir
Spoil Disposal Plan to address disposal/storage of
waste soil and/or rock materials (spoils) generated by
road maintenance, slope failures, and construction
projects.
Same as Okanogan PUD’s proposal, but with Water
Quality Monitoring Plan to provide more specificity
and oversight to ensure intended results.
Project Operations and
Compliance Monitoring
Plan.
Aquatic Resources ...............
Raptor and Other Avian
Perching Habitat.
Vegetation ............................
Vegetation Plan and control of noxious weeds ..............
Ute Ladies’-Tresses Plan .....
Protection of Ute Ladies’-Tresses during initial construction and continued monitoring.
Recreation Management Plan, including numerous
measures to protect and enhance recreation at the
project. Potential negative effect on recreational boating in river upstream of project from boulder placement.
Recreation Management
Plan.
Cultural Resources ..............
Aesthetics Management Plan, including numerous
measures to address aesthetics, and new riparian
vegetation enhancing appearance of shoreline over
existing condition with trees lost to fire. Restoration of
a shoreline road to a natural condition. Reduction of
flows in short bypassed reach and over falls.
May 2009 HPMP .............................................................
Consultation and Commission approval.
sroberts on DSK69SOYB1PROD with NOTICES
Aesthetics .............................
Limited consultation and Commission approvals for
plans.
5.2 Comprehensive Development and
Recommended Alternative
Sections 4(e) and 10(a)(1) of the FPA
require the Commission to give equal
consideration to all uses of the
waterway on which a project is located.
When we review a proposed
hydropower project, we consider the
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
Same as Okanogan PUD’s proposal, but with Project
Operations and Compliance Monitoring Plan to further define protective operations and ensure compliance.
Same as Okanogan PUD’s proposal, but without further
evaluation of potential effects to resident fishery, and
no potential limited benefit to whitefish or adverse effects from boulder placement in river upstream of
project.
Same as Okanogan PUD’s proposal, but with addition
of 10 artificial perch poles along the reservoir shoreline.
Same as Okanogan PUD’s proposal, but with additional
oversight.
Same as Okanogan PUD’s proposal, but protection
measures postconstruction if warranted.
Same as Okanogan PUD’s proposal, but with additional
provisions for fire suppression, monitoring to ensure
resource protection, added assurance of O&M of the
entire length of the public access road from the
Loomis-Oroville Road to Enloe dam (5 acres), additional river access take-out point at Miner’s Flat, and
removal of one small, deteriorated building. No potential negative effect on recreational boating from
boulder placement in river upstream from project.
Same as Okanogan PUD’s proposal, but with additional
provisions to ensure oversight and compliance, and
ensure other resource measures do not detract significantly from aesthetics. Additionally, removal of a
deteriorated building.
Same as proposed, but with greater detail, evaluation,
consultation, and oversight to ensure protection of
cultural resources.
Oversight of resource plans to ensure intended results.
water quality, fish and wildlife,
recreation, cultural, and other nondevelopmental values of the involved
waterway equally with its electric
energy and other developmental values.
In deciding whether, and under what
conditions a hydropower project should
be licensed, the Commission must
PO 00000
Frm 00102
Fmt 4701
Sfmt 4703
determine that the project would be best
adapted to a comprehensive plan for
improving or developing the waterway.
This section contains the basis for, and
a summary of, our recommendations for
licensing the Enloe Project. We weigh
the costs and benefits of our
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
recommended alternative against other
proposed measures.
Recommended Alternative
Based on our independent review and
evaluation of the environmental and
economic effects of the proposed action,
the proposed action with additional
staff-recommended measures, and the
no-action alternative,43 we recommend
the proposed action with staffrecommended measures as the preferred
alternative.
We recommend the staff alternative
because: (1) Issuance of a new license
would allow Okanogan PUD to
construct and operate the project as a
beneficial and dependable source of
electrical energy; (2) the 9.0 MW of
electric capacity available comes from a
renewable resource which does not
contribute to atmospheric pollution; and
(3) the recommended environmental
measures would protect water quality,
enhance fish and wildlife resources,
protect cultural resources, and improve
public use of the project’s recreational
facilities and resources.
sroberts on DSK69SOYB1PROD with NOTICES
Measures Proposed by Okanogan PUD
Based on our environmental analysis
of Okanogan PUD’s proposal discussed
in section 3 and the costs discussed in
section 4, we conclude that the
following measures proposed by
Okanogan PUD would protect and
enhance environmental resources and
would be worth the cost. Therefore, we
recommend including these measures in
any license issued for the project.
• Develop and implement an ESCP to
minimize the effects of construction,
repair, and operation of the dam and
intake, penstocks, powerhouse, tailrace,
impoundment, access roads, powerline,
and construction camp (WQ–06).
• Develop and implement a CSMP to
minimize sediment disturbance and
maximize sediment containment during
construction (WQ–08).
• Operate the project in a run-of-river
mode so that there are no detectable
changes in flows below Similkameen
Falls (FISH–08) and avoid flow
fluctuations that might affect
downstream resources by complying
with ramping rate restrictions as
recommended by resource agencies.
• Monitor water temperatures at three
locations for a period of 5 years to
determine if the operation of the new
crest gates causes an increase in the
water temperatures when compared
43 BLM stated that it would require Okanogan
PUD to remove the dam and all associated facilities
from the public lands under the existing right-ofway permit if a license is be issued. We discussed
dam removal under cumulative effects Section 3.2.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
28607
with upstream of the reservoir (WQ–01)
(as modified below).
• Design the powerhouse tailrace so
that it discharges to and circulates water
in the plunge pool downstream of
Similkameen Falls, preventing
stagnation and consequently water
quality degradation of the pool habitat
(WQ–02).
• Provide aeration in the powerhouse
turbine draft tubes during low flow
summer months (WQ–03).
• Monitor total TDG and DO at the
project intake and in the pool below
Similkameen Falls for a period of 5
years to assess TDG and DO levels
under project operations (WQ–04) (as
modified below).
• Design a broad, shallow intake
structure and channel to minimize
sediment disturbance from project
construction and operation in the
reservoir near the intake (WQ–05).
• Develop and implement at project
initiation a Spill Plan to reduce
potential effects from accidental spills
when heavy machinery is operating near
the river and reservoir (WQ–07).
• Implement the Blasting Plan and
use BMPs to avoid and minimize
potential blasting effects on aquatic
resources, including federally listed or
sensitive species, associated with
blasting (FISH–01).
• Ensure that logs and other large
woody debris can pass over the dam
spillway during the annual flood and, if
needed, transport some large woody
debris around the dam and place it in
the river downstream of the dam to
provide fish habitat (FISH–03).
• Design the intake trashrack with 1inch bar spacing so that smaller fish
would be able to pass safely through the
trashrack and larger fish would be
discouraged or prevented from passing
through the trashracks and turbines
(FISH–04).
• Install tailrace barrier nets in the
powerhouse draft tubes to prevent fish
in the tailrace from swimming upstream
into the draft tubes during low flows
and maintain the nets (FISH–06).
• Monitor barrier nets with video
cameras to observe if adult salmonids
are able to enter the draft tubes past the
barrier nets (FISH–07). Develop and
implement a written operation plan, a
postconstruction evaluation and
monitoring plan, and an inspection and
maintenance plan to ensure that the
tailrace barrier operates effectively.44
• Design and locate the tailrace in an
area to avoid effects on fish that use the
plunge pool below Similkameen Falls
(FISH–09).
• Enhance an existing side channel to
improve spawning, rearing, and summer
thermal refugia downstream of the
powerhouse tailrace (FISH–10).
• Implement a gravel
supplementation program to increase
the amount of gravel in the river
downstream of Enloe dam and improve
spawning habitat (FISH–11).
• Develop a biological review process
which includes establishing a TRG to
provide ongoing refinement and
evaluate effectiveness of environmental
measures (FISH–12).
• Develop a fisheries monitoring
database for organizing and storing
monitoring data related to aquatic
resources for use by the TRG to monitor
effectiveness of measures. (FISH–13).
• Provide minimum flows of 30 cfs
from mid-July to mid-September, and 10
cfs rest of the year in the bypassed reach
for resident fish using the plunge pools.
• Monitor DO and water temperature
in the bypassed reach for a period of
time postconstruction to be determined
in consultation with the TRG, and adopt
an adaptive management program to
enhance DO and water temperatures
should monitoring indicate that state
water quality standards are not being
met (as modified below).
• Determine appropriate thresholds
for downramping rates in the bypassed
reach based on monitoring and field
observations prior to operations (as
modified below).
• Select an appropriate minimum
flow release location in consultation
with fisheries resource agencies
(Washington DOE, Washington DFW,
Interior, NMFS, BLM, and the Colville),
and make appropriate project
modifications to provide minimum flow
releases for the bypassed reach (as
modified below).
• Implement the Vegetation Plan to
minimize effects on riparian and
wetland vegetation, including goals, the
species to be used, methods, and
benchmarks of success for botanical
resources (BOTA–01) (as modified
below).45
• Plant riparian vegetation along the
west and east banks of the reservoir
shoreline to mitigate the temporary loss
of habitat due to higher reservoir levels
while fringe riparian vegetation
establishes along the new water line
(BOTA–02).
• Return the existing shoreline road
to natural conditions after project
construction to improve wildlife habitat
along the reservoir and eliminate the
current interruption between the
44 Okanogan PUD proposed these additional
plans as modified (April 9, 2010) from NMFS
recommendations (February 26, 2010).
45 The Vegetation Plan (BOTA–01) contains the
measures BOTA–2 through BOTA–7, BOTA–11,
REC–01, and AES–04.
PO 00000
Frm 00103
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
sroberts on DSK69SOYB1PROD with NOTICES
28608
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
shoreline and upland habitat (BOTA–
03, also analyzed as part of REC–13).
• Plant woody riparian species in the
riparian area along the abandoned road
corridor (BOTA–04).
• Plant woody riparian vegetation
along the east and west banks of the
reservoir downstream of Shanker’s Bend
and upstream of the reservoir (BOTA–
05).
• Install grazing control measures,
including fencing, to protect riparian
plantings and sensitive areas from cattle
grazing (BOTA–06, also analyzed as part
of REC–1).
• Monitor restored areas annually for
5 years and then once again at 8 years,
and plant additional willows if
performance criteria are not met;
provide annual reports of the
monitoring results to the Corps and
Washington DOE (BOTA–07) (as
modified below).
• Employ BMPs to protect riparian
and wetland vegetation, including
measures such as flagging and
temporarily fencing any wetland and
riparian vegetation in the vicinity of the
project that would reduce or avoid
accidental impacts, and limiting
construction and maintenance-related
disturbance of sensitive habitats to the
extent possible to protect these
resources (BOTA–08).
• Develop and implement an
environmental training program to
inform employees and contractor
employees who work on the project site
or related facilities during construction
and operation about the sensitive
biological resources associated with the
project area (BOTA–09).
• Provide a biological monitor to
check construction sites on a weekly
schedule to ensure that protected areas
are not disturbed and that fencing and
other control measures are intact
(BOTA–10).
• Implement the Noxious Weed
Control Program to control weeds along
roads and construction sites (BOTA–11).
• Survey disposal sites and control
noxious weeds by implementing control
measures prior to spoil disposal
(included in Okanogan PUD, 2009d)
(BOTA–12).
• Hydroseed disposal sites using
native upland species, following
completion of spoil disposal (included
in Okanogan PUD, 2009d) (BOTA–13).
• Place and install the project
transmission line to minimize effects on
raptors and other birds (WILD–01).
• Concentrate construction activities
to occur in summer and early fall to
minimize effects on overwintering birds
and bald eagles (WILD–02).
• Conduct pre-disposal site survey for
wildlife and time the clearing of
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
vegetation at spoil disposal sites to
minimize wildlife impacts (WILD–03),
(included in Okanogan PUD, 2009d).
• Conduct surveys for Ute ladies’tresses prior to, during, and
postconstruction to either confirm that
the species does not occur in areas
affected by the project or guide the
development of avoidance or mitigative
measures (BOTA–14) (as modified
below).
• Revise and implement the
Recreation Management Plan which
includes 12 measures for recreation and
four measures for safety of and access to
the project areas (REC–13) (as modified
below).
• Revise and implement the Fence
Plan in coordination with the
Recreation Management Plan to include:
(a) Installation of barricades and fencing
on the east side of the dam and the area
below the dam; (b) use of non-barbed
wire at the recreation area; and (c)
installation of a stock watering tank
north of the proposed recreation site as
an alternative source of drinking water
for all grazing cattle with rights to this
area (REC–01).
• Provide public access below Enloe
dam on the east bank by developing a
trail to the river below the dam (REC–
02).
• Transfer to Okanogan County
ownership rights to the trestle bridge for
the development of a future public trail
located on the west side of the river
downstream of the dam with certain
conditions (REC–03).
• Improve the existing informal boat
ramp located on the east bank upstream
of the dam (REC–04).
• Clean up and restore the wooded
area on the east bank of the reservoir
(REC–05).
• Develop an interpretive publication,
in collaboration with Okanogan County,
the Water Trail Committee, and other
interested parties, including a map
illustrating public access and recreation
sites (REC–06).
• Remove existing trash and conduct
annual cleanup activities within the
wooded area on the east bank of the
reservoir and along the OTID Ditch
Road leading from the Loomis-Oroville
Road to the dam site (REC–07).
• Develop an accessible parking area
and install a vault toilet on the east bank
and upstream of Enloe dam (REC–08).
• Install picnic tables, at least one of
which should incorporate universal
design principles, near the parking area
taking advantage of existing trees for
shading (REC–09).
• Develop primitive campsites near
the parking and picnic area (REC–10).
• At a minimum, install one
interpretive sign near the parking and
PO 00000
Frm 00104
Fmt 4701
Sfmt 4703
picnic area and one sign near the
abutment of the old powerhouse access
bridge, below Similkameen Falls (REC–
11).
• Place an information board near
Enloe dam to depict public access areas
and information concerning visitor use
of the project area (REC–12).
• Maintain the existing signs and
system of safety cables and grab ropes
above the dam, install dam safety/
warning signs for boaters, and install a
log boom across the powerhouse intake
channel to protect boaters (SAFETY–
01).
• Allow limited public access to the
project during construction (SAFETY–
02).
• Coordinate with BLM and other
land owners, as appropriate, to identify
options for preventing public access to
the old powerhouse (SAFETY–03).
• Develop and implement a Safety
During Construction Plan.
• Implement the Aesthetics
Management Plan (as modified below),
including:
Æ Using visually-compatible colors
and building materials for construction
occurring on the east bank (AES–01).
Æ Consulting with the Colville and
other stakeholders during restoration
activities (AES–02).
Æ Using non-reflective surfaces where
possible during construction (AES–03).
Æ Grading and repairing all slopes
where buildings are removed and plant
native grasses and other riparian
vegetation (AES–04).
• Solicit a new owner for the existing
historic powerhouse (HIST–01).
• If a qualified owner is not identified
for the existing historic powerhouse,
demolish the existing historic
powerhouse and create an interpretive
site (HIST–02).
• Install interpretive panels about the
existing historic powerhouse (HIST–03).
• Review and reach agreement on the
draft HPMP and incorporate information
into a PA (HIST–04) (as modified
below).
• Monitor effects of shoreline
fluctuations on archaeological sites in
shoreline areas, and mitigate, as needed.
(ARCH–01).
• Avoid known National Registereligible archaeological sites to prevent
effects during construction (ARCH–02).
• Monitor eligible sites during
construction activities to avoid effects
on these sites (ARCH–03).
• Develop and implement an
inadvertent discovery plan, specifying
required actions and procedures if a site
is discovered during construction and
including training staff and construction
workers about the potential for
discovery of archaeological deposits
(ARCH–04).
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
• Determine if there would be effects
on archaeological sites in the vicinity of
recreational facilities (ARCH–05).
Additional Staff-Recommended
Measures
We recommend the measures
described above, along with nine
additional staff-recommended
measures/modifications. The additional
staff-recommended measures include
the following: (1) A spoils disposal plan;
(2) consultation and approval of plans;
(3) a water quality monitoring plan; (4)
a project operations and compliance
monitoring plan; (5) modifications to
the proposed Vegetation Plan; (6)
provision for eagle perching habitat; (7)
modifications to the Recreation
Management Plan; (8) modifications to
the Aesthetics Management Plan; (9)
modifications to the Ute ladies’-tresses
survey proposal; and (10) modifications
to the proposed HPMP. Below, we
discuss the rationale for our
modifications and our additional staffrecommended measures.
Spoil Disposal Plan
Although Okanogan PUD proposed to
implement an ESCP and a CSMP which
would lessen the potential effects
associated with land-disturbing
activities during project construction
and operation, they do not propose
anything for spoil disposal. Interior
recommends that Okanogan PUD
develop and implement a Spoil Disposal
Plan prior to any construction activities
that may affect the BLM-administered
public lands. The plan would address
disposal and/or storage of waste soil
and/or rock materials (spoils) generated
by road maintenance, slope failures, and
construction projects. Introduction of
waste soil or rock into the Similkameen
River would have negative effects on
water quality. Implementation of the
measures in a Spoil Disposal Plan
would minimize effects from excavated
materials on water quality or the
surrounding environment within the
project boundary and that such a plan
would be worth the estimated levelized
annual cost of $340.
sroberts on DSK69SOYB1PROD with NOTICES
Consultation and Approval of Plans
Okanogan PUD proposes a Blasting
Plan, a plan for woody debris, a plan for
the side-channel enhancement, a gravel
supplementation program, and a Spill
Plan. We recommend consultation with
the TRG and Commission approval prior
to implementation of these plans to
ensure that these plans are developed
with expertise and recommendations
from the TRG. The cost of this
additional measure would be minimal.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
Water Quality Monitoring Plan
Okanogan PUD’s water quality
monitoring proposals include a number
of aspects that need to be clarified.
These include: (1) A description of the
methods, equipment, maintenance and
calibration procedures, and specific
locations that will be used to monitor
water temperature, TDG, and DO above
the dam and below the dam in both the
bypassed reach and in the tailrace; (2)
a description of the protocol for
annually reporting monitoring data to
the Commission and Washington DOE;
and (3) an implementation schedule.
Therefore, we recommend that
Okanogan PUD develop a Water Quality
Monitoring Plan for the Enloe project, in
consultation with the TRG, to be filed
for Commission approval that includes
these measures and with this level of
detail.
Okanogan PUD proposes to monitor
temperature at three unspecified
locations in the reservoir for a period of
five years and in the bypassed reach to
determine if state water quality
standards are being met. Additionally,
Okanogan PUD proposes to monitor
TDG and DO at the project intake and
in the project tailrace for the same time
period, as well as DO monitoring in the
bypassed reach. Interior and NMFS have
recommended these same provisions,
and NMFS further recommends that DO
be monitored for the life of any license
granted. Monitoring temperature, TDG,
and DO during the first 5 years of
operation would provide information on
possible project effects on these
parameters, but if water quality
standards are not met regularly,
additional monitoring and alternative
measures may be necessary. A report at
the end of five years evaluating the need
for continued monitoring and/or
measures, and implementation of any
additional measures as needed, would
ensure that water quality is maintained
at a level that will support aquatic
resources at the project. Therefore, we
recommend that the Water Quality
Management Plan includes provisions
for Okanogan PUD to file a report with
the Commission for approval at the end
of the five-year monitoring period,
developed in consultation with the
TRG, documenting the results of the
monitoring and any proposals and
recommendations for the need for
continued monitoring and/or measures.
This plan would ensure that water
quality at the project is effectively
monitored and maintained, and would
be worth the estimated levelized annual
cost of $680.
PO 00000
Frm 00105
Fmt 4701
Sfmt 4703
28609
Project Operations Compliance and
Monitoring Plan
Okanogan PUD proposes to operate
the project in a run-of-river mode, to
provide minimum flows in the bypassed
reach, and to implement ramping rates
both in the project tailrace and in the
bypassed reach. The proposal includes
many details which are yet to be
determined, including: (1) How to
document compliance with the run-ofriver operations, minimum flow
requirements (including exact dates to
provide the minimum flows), and
ramping rates requirements; (2) critical
flow thresholds for downramping of
flows in the bypassed reach; and (3) the
means of flow delivery to the bypassed
reach. Therefore, we recommend that
Okanogan PUD develop a project
operations compliance and monitoring
plan for the Enloe project, in
consultation with the TRG, to be filed
for Commission approval that includes
the details above. This plan would
ensure that the project operation is
clearly defined and that compliance
could be demonstrated. The benefit of
such a plan would be worth the
estimated levelized annual cost of $680.
Reporting Monitoring Results for
Restored Areas
In its Vegetation Plan, Okanogan PUD
proposes to provide to the Corps and
Washington DOE an annual report on its
monitoring of restored areas annually
for 5 years and then once again at year
8. Comments provided by the FWS,
BLM, and Washington DFW indicate
interest in reviewing the reports on the
restoration efforts, given the agencies’
responsibilities. In addition, the
Commission would need to be apprised
of the success of restoration and the
need for any further measures to meet
the Vegetation Plan’s performance
criteria. Therefore, Okanogan PUD
should revise its Vegetation Plan to
include providing FWS, BLM, and
Washington DFW with its monitoring
reports at the same time it provides
them to the Corps and Washington DOE.
In addition, the Vegetation Plan should
be revised to include filing with the
Commission its monitoring reports for
years 1 through 5 and 8, and for
approval, any proposals for further
measures, developed in consultation
with the agencies.
Eagle Perching Habitat
A previous fire resulted in a loss of
large shoreline cottonwoods and other
trees that could be used by bald eagles
and other raptors. Interior and
Washington DFW recommend retaining
dead trees along the reservoir for bald
E:\FR\FM\17MYN2.SGM
17MYN2
28610
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
eagle perching habitat, with the
exception of trees that pose a hazard.
Okanogan PUD agrees with this measure
in their reply comments. Interior and
Washington DFW also recommend
installation of 10 artificial perch poles
for perching habitat along the reservoir
shoreline. The retention of dead trees,
until such time as they pose a hazard,
and installation and maintenance of
artificial perch poles, would enhance
the use of the project area by bald eagles
and other raptors. We estimate that
retaining non-hazard dead trees would
have no additional cost than typical
maintenance, and the levelized annual
cost of the perch poles would be $680.
We conclude that the potential benefits
of these measures would justify the low
cost, and therefore would be in the
public interest.
sroberts on DSK69SOYB1PROD with NOTICES
Ute Ladies’-Tresses Plan
Okanogan PUD proposes to conduct
additional surveys prior to, during, and
postconstruction for the threatened Ute
ladies’-tresses. Okanogan PUD should
prepare a plan, after consulting with
FWS, BLM, and Washington DFW, for
conducting these additional surveys,
and should include in the plan a
provision to provide each year’s survey
results to the Commission and the
consulted agencies. The plan should
also include a provision to file with the
Commission for approval, an additional
plan, after consultation with the
agencies, with measures to avoid or
mitigate adverse impacts on Ute ladies’tresses or other listed species if the
surveys identify a listed species in areas
that would be affected by the proposed
project or side channel enhancement.
Development of the plan would have an
estimated levelized annual cost of $680.
Therefore, we recommend development
of the plan to ensure that the additional
surveys to confirm the presence or
absence of Ute ladies’-tresses are
conducted and adequate, and that
appropriate measures are developed to
avoid or mitigate impacts to the species.
Recreation Management Plan
Okanogan PUD proposes to
implement a Recreation Management
Plan. Staff recommends that Okanogan
PUD revise the proposed Recreation
Management Plan to coordinate with
other proposed plans for the project
(specifically, the Aesthetics
Management Plan and the HPMP) and
include consultation with stakeholders.
In addition to Okanogan PUD’s
proposal, staff recommends Okanogan
PUD establish a snow plowing schedule
to allow visitors winter access to project
lands and waters; develop and
implement a recreation use monitoring
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
plan to include monitoring at the falls;
develop and implement a fire
suppression program; add
approximately 5.0 acres to the project
boundary incorporating the entire
length of the public access road from the
Loomis-Oroville Road to Enloe dam;
develop a river access take-out point at
Miner’s Flat and incorporate
approximately 1 acre into the project
boundary; and removal of the one small,
deteriorated building on Okanogan PUD
land at the north end of the proposed
Enloe dam recreation area. Including
consultation with stakeholders and
coordinating the Recreation
Management Plan with other proposed
plans for the project would ensure
proposed measures would not adversely
affect other environmental resources at
the project. Including these measures in
the proposed Recreation Management
Plan would improve access to existing
recreational facilities and opportunities
at the project, prevent wildfire on
project lands and adjoining wildlife
areas, and would be worth the estimated
levelized annual cost of $13,580.
Building Removal
BLM recommends that Okanogan
PUD remove two small, deteriorating
buildings at the north end of the
proposed Enloe Dam Recreation Area.
Okanogan PUD states that one of two
small structures on the north end of the
proposed Enloe dam recreation area is
owned by a private landowner that
maintains a lease with BLM. Okanogan
PUD states it is not in a position to
remove the BLM-leased structure,
however, it will take reasonable
measures to secure existing structures
from unauthorized entry. Removal of
the BLM-leased structure is discussed
later in this section under Measures Not
Recommended. Because the remaining
structure is not currently being used as
a pump house, nor is it being used for
project purposes, staff recommends
Okanogan PUD remove this building
from the north end of the proposed
Enloe Dam Recreation Area. Removal of
this deteriorating building would
improve visual aesthetics at the
proposed Enloe Dam Recreation Area,
improve safety at the site, and would be
worth the estimated levelized annual
cost of $170.
Aesthetics Management Plan
Okanogan PUD proposes to
implement an Aesthetics Management
Plan. Staff recommends that Okanogan
PUD revise the Aesthetics Management
Plan to coordinate with other proposed
plans for the project (specifically the
Recreation Management Plan and the
HPMP). Staff also recommends
PO 00000
Frm 00106
Fmt 4701
Sfmt 4703
Okanogan include consultation with the
Colville and BLM, and file with
Commission for approval, to ensure the
project area has been appropriately
evaluated and that appropriate measures
are undertaken to preserve the aesthetic
character of the area at a minimal cost
of $340.
Cultural Resources
Okanogan PUD proposes to
implement its May 2009 HPMP;
however, the May 2009 HPMP does not
include consideration of Okanogan
PUD’s proposed side-channel
enhancement site. We recommend that
Okanogan PUD revise its May 2009
HPMP to include the proposed sidechannel enhancement site and
additional measures for the protection
of historic properties at the Enloe
Project. These measures include: (1)
Further consideration of the potential
effects of capping site 45OK532; (2) a
description of the proposed sidechannel enhancement site; (3) two
separate defined APEs that delineate the
proposed Enloe project and the
proposed side-channel enhancement
site; (4) consultation with the Cultural
Resources Working Group (CRWG)
regarding the resolution of adverse
effects on the historic Enloe
powerhouse; (5) re-evaluating the
Oroville-Tonasket Irrigation Canal for
National Register-eligibility; (6)
completing determinations of eligibility
for unidentified cultural resources on
BLM lands; (7) periodic review of the
HPMP; (8) a site monitoring program; (9)
cultural interpretative and education
measures; and (10) revising the APEs to
accommodate modifications to the
project boundary, if any. These
additional measures would ensure
protection of historic properties and
would be worth the estimated levelized
annual cost of $19,600.
Measures Not Recommended
Some of the measures proposed by
Okanogan PUD and recommended by
other interested parties would not
contribute to the best comprehensive
use of the Similkameen River water
resources, do not exhibit sufficient
nexus to project environmental effects,
or would not result in benefits to nonpower resources that would be worth
their cost. The following discusses the
basis for staff’s conclusion not to
recommend some of the measures
proposed by Okanogan PUD and
recommended by other entities.
DO Monitoring for Term of License
NMFS recommends that DO be
monitored at the project intake and in
the tailrace for the life of any license
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
granted. Monitoring DO during the first
5 years of operation would provide good
information on possible project effects
on DO, but if water quality standards are
not met regularly, additional monitoring
and alternative measures may be
necessary. For this reason, we
recommend that Okanogan PUD file a
report with the Commission at the end
of five years evaluating the need for
continued monitoring and/or measures
as part of the Water Quality
Management Plan. This plan would be
developed in consultation with the TRG
and would ensure that the water quality
monitoring effort would be designed
and implemented in an effective
manner. This approach would be
sufficiently protective of water quality
in the area; therefore, we do not
recommend that Okanogan PUD be
required to monitor DO for the life of
any license that may be granted.
Minimum Flows
Washington DFW, American Rivers et
al., Interior, and CRITFC recommend a
minimum flow be provided in the
bypassed reach immediately
downstream of Enloe dam. Washington
DFW, Interior, and CRITFC did not
specify a recommended minimum flow,
but American Rivers et al.
recommended a minimum flow that
would range from 400 cfs to 3,400 cfs
depending on the month. In a filing
with the Commission on October 28,
2010, Okanogan PUD stated that it has
agreed with Washington DOE and
Washington DFW to provide a
minimum flow of 10 to 30 cfs
downstream of Enloe dam. Although
American Rivers et al. states that their
recommended flow is based on
Washington regulations to ensure that
state water quality standards are met,
neither of the Washington agencies has
recommended this flow, nor has
American Rivers et al. provided a
technical justification for its flows
beyond stating that its flow would
provide adequate depth, substrate, cover
and velocity in the bypassed reach. The
bypassed reach is only 370-feet long and
there is no evidence that this short reach
provides habitat that is critical for the
life stages of any fishes. In addition,
anadromous fish do not occur in the
bypassed reach because they are unable
pass Similkameen Falls. Therefore,
American Rivers et al.’s recommended
minimum flows would not result in
benefits that would justify the estimated
levelized annual cost of $1,295,830.
Boulder Clusters
Okanogan PUD proposes (FISH–02) to
construct and install boulder clusters to
improve mountain whitefish habitat and
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
recreational fisheries in the river
upstream of the reservoir. Interior does
not recommend the boulder clusters
because they could be a hazard to
recreational boaters and may further
increase water temperatures in the
reservoir by creating further heat sink.
Washington DFW also does not
recommend the boulder cluster
placement, as it states that boulder
clusters are an insufficient measure to
mitigate for project impacts on resident
fish.
As discussed in section 3.3.3.1, the
current reservoir and the river upstream
of the reservoir is shallow, has little
habitat diversity, and habitat quality is
the limiting factor for resident fishes.
Most of the fish in the reservoir are nonnative species that are better adapted to
warmer, slower velocity water than
native coldwater fishes, such as the
mountain whitefish. The project would
raise the elevation of the reservoir by 4
feet, which would result in more warm,
slow water habitat and less riverine
habitat suitable for coldwater, resident
fishes. Okanogan PUD’s proposal to add
boulder clusters upstream of the
reservoir to provide habitat for resident,
coldwater fish may create a small
amount of pool habitat behind the
clusters that could be used by native
coldwater fishes, such as the mountain
whitefish. However, very few whitefish
(0 in 2006; 2 in 2007) have been found
in the reservoir during recent surveys,
probably due to a combination of
northern pikeminnow predation, warm
water temperatures, lack of cover, and
the sand-silt substrate It is unlikely that
the proposed boulder clusters would
provide much if any benefit to the
limited mountain whitefish fishery due
to these limiting factors, while creating
additional negative effects on
recreational boating and water
temperatures. We do not recommend
this measure at an estimated levelized
annual cost of $4,370.
Entrainment and Resident Fish
Population Monitoring
Okanogan PUD proposes to monitor
seasonal variation in entrainment
susceptibility, to observe trauma and
mortality caused by entrainment, and to
monitor reservoir fish populations to
relate the entrainment observations with
the fish distribution and abundance in
the reservoir. Interior recommends
monitoring resident fish populations in
the reservoir as part of its Resident Fish
Habitat Management Plan, which is
discussed below. As discussed in
section 3, both entrainment levels and
mortality of entrained fish are expected
to be very low since there are very few
small fish in the area of the intake due
PO 00000
Frm 00107
Fmt 4701
Sfmt 4703
28611
to unsuitable habitat. Likewise, effects
of project entrainment on reservoir
populations are expected to be nominal
for the same reason. Therefore, these
data collection efforts likely would not
produce useful data. Additionally,
Okanogan PUD did not specify if these
monitoring efforts could lead to
potential additional measures to adjust
the proposed measures to reduce any
adverse effects associated with
operation of the intake. Therefore, we
conclude that this monitoring would not
be worth the estimated levelized annual
cost of $7,280.
Fisheries Enhancement Plan and
Resident Fish Habitat Management Plan
Washington DFW recommends a
Fisheries Enhancement Plan that would
consist of three measures: (1) Side
channel enhancement at locations in the
lower Similkameen River; (2) gravel
supplementation downstream of the
tailrace; and (3) stocking of sterile
triploid trout above Enloe Dam. Interior
also recommends a Fisheries
Enhancement Plan that contains three
measures, the first two of which were
identical to the measures proposed by
Washington DFW. The third measure of
Interior’s recommended plan provides
for downstream transport and
placement of large woody debris
captured at the project intake and
trashrack. The first two measures of the
Washington DFW plan and all three of
the measures in Interior’s recommended
plan are identical to measures proposed
by Okanogan PUD (FISH–10, FISH–11,
and FISH–03) and are recommended by
staff. We discuss the third measure
recommended by Washington DFW
(stocking of sterile triploid trout) below.
Interior recommends a Resident Fish
Habitat Management Plan. This plan
consists of six measures including: (1) A
study of resident fish populations and
habitat conditions in the project
reservoir; (2) a study of the impacts of
the project on water temperatures; (3) an
evaluation of the possible solutions for
lowering water temperatures and
improving fish habitat in the
Similkameen River, particularly through
riparian plantings; (4) the possible
stocking of sterile rainbow trout in the
reservoir; and (5) a monitoring plan for
fish habitat in the project reservoir.
Recommendation 1 is identical to
Okanogan PUD’s proposal for resident
fish population monitoring (FISH–05),
which we do not recommend as
discussed above. Recommendation 2
would be accomplished by Okanogan
PUD’s proposal to monitor water
temperatures at the project for 5 years
(WQ–01), which we recommend with
the option of continued monitoring after
E:\FR\FM\17MYN2.SGM
17MYN2
28612
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
sroberts on DSK69SOYB1PROD with NOTICES
the preparation of a report at the end of
the five years of monitoring.
Recommendations 3 and 4 are
consistent with Okanogan PUD’s
recommendations for riparian plantings
in the project area (BOTA–01, –02, –04,
–05), which we recommend.
Recommendation 5 is discussed below.
Regarding recommendation 6, the
proposed run-of-river operation of the
project would likely have no effect on
reservoir species, and would have little
effect on the riverine habitat upstream
of the reservoir. The raising of the
reservoir would have short-term effects,
but the system would stabilize over time
and the habitat would be enhanced by
the planting of riparian vegetation.
Therefore, we do not recommend the
measure because it is not worth the
estimated levelized annual cost of
$65,110.
As mentioned above, Interior and
Washington DFW recommend stocking
sterile triploid rainbow trout to support
a recreational fishery upstream of Enloe
dam. This recommendation could result
in a number of adverse effects. While
these fish would not live long and
cannot reproduce, there is a potential
that stocking of fish could introduce
disease into native fish populations. The
British Columbia Ministry of
Environment opposes stocking of fish in
the Similkameen River above the falls
citing concerns that stocking could
introduce disease into upstream native
populations. Stocking rainbow trout
would also not substantially contribute
to the recreational fishery, in that the
fishery would be limited to a brief time
during cooler months, because of the
high water temperatures in the
reservoir. Stocked rainbow trout would
also compete with resident fishes for
resources and could negatively affect
their populations. Due to the potential
adverse effects and limited benefit to the
fishery, we do not recommend the
stocking of triploid trout in the project
reservoir at an estimated levelized
annual cost of $50,000.
Intake Fish Screen
Okanogan PUD proposes to install a
modified, narrow-spaced trashrack to
prevent fish entrainment. Interior and
Washington DFW recommend that
Okanogan PUD install a fish screen at
the project intake, instead of the narrowspaced trashrack, but do not specify the
kind of screen. Okanogan PUD’s
proposed trashrack would have a 1-inch
spacing between its bars, which would
physically exclude most larger fish
(greater than 6 inches in length) from
entrainment. As discussed in Section
3.3.3.2, smaller fish which would be
unable to swim away from the trashrack
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
and would fit though the one-inch
spacing would become entrained, but it
is estimated that their survival rate
would be in the range of 84–95%.
Additionally, fish surveys have shown
that few fish reside in the area of the
proposed intake. A fish screen would
likely exclude smaller fish from
entrainment, but at a much higher cost
to build, install, and maintain.
Okanogan PUD estimates that a fish
screen in its proposed intake channel
would cost between $16 and $24M, or
$1.1 and $1.6M annualized, to
construct.46 While we can not verify this
number due to the agencies’ lack of
specificity in their recommendations,
we can assume that a fish screen would
cost much more than the $32,260
annualized cost of Okanogan PUD’s
proposed narrow-spaced trashrack.
Given the analysis above, and that the
proposed narrow-spaced trashrack
would provide a sufficient level of
protection to resident fish, and at a
much lower cost, we do not recommend
a fish screen at the project intake. We
do, however, recommend that Okanogan
PUD consult with Interior and
Washington DFW during the final
design of the intake structure and
trashrack with 1-inch spacing.
Fish Passage
CRITFC and BIA recommended that
production potential estimates for
salmon and UCR steelhead upstream of
Enloe dam be included as part of a fish
passage alternative in the current
licensing proceeding, and CRITFC
recommended a paleolimnological
study of historical anadromy above
Enloe dam. The BIA also commented
that cost estimates for designing,
constructing, operating, and
maintaining upstream and downstream
fish passage facilities for the term of any
license need to be developed in case
such an action is required in the future.
Both FWS and NMFS recommend that
upstream anadromous fish passage
facilities not be required now, and have
reserved their authority to require fish
passage under section 18 in the future.
The British Columbia Ministry of the
Environment states that it does not
support fish passage at Enloe Dam
because the introduction of anadromous
fishes above Enloe dam would have
adverse effects on the ecosystem, in the
form of disease transfer and competition
for food and space with native fishes.
As discussed in section 3.3.3.2, there
are no documented accounts of Chinook
salmon, sockeye salmon, UCR steelhead,
or Pacific lamprey above Similkameen
46 See Okanogan PUD’s response to REA
comments filed on April 9, 2010.
PO 00000
Frm 00108
Fmt 4701
Sfmt 4703
Falls. In addition, Native Americans
who have inhabited the area for
thousands of years believe that
Similkameen Falls has been a barrier to
anadromous fish passage since the
beginning of their history. The
Okanogan Sub-basin Plan, which was
prepared for the Northwest Power and
Conservation Council, concluded that
Similkameen Falls is an impassable
historic barrier to upstream salmon
migration. The Upper Columbia Salmon
Recovery Board issued a recovery plan
that does not identify upstream and
downstream passage of fish at Enloe
dam as being a short-term or long-term
action that would contribute to the
restoration of these fish stocks, based on
the uncertainty of fish being able to
ascend Similkameen Falls. Further,
there have been no verified accounts of
a sighting of an anadromous fish above
the falls. We, therefore, have insufficient
evidence to conclude that Enloe dam
blocks anadromous fish passage into the
upper Similkameen River. Additionally,
due to the absence of anadromous fish
and the potential adverse effects that
could occur upstream if anadromous
fish were to be passed, we conclude that
any additional studies of historical
anadromy above Enloe dam are not
worth the estimated levelized annual
cost of $6,770.
Flow Continuation
Interior recommends the development
of a plan to provide 48 hours of flow
continuation in the event of an
emergency project shutdown at the
unmanned, remotely operated
powerhouse. In the case of an
unplanned outage, the power plant
control system, using battery and diesel
generator back-up, would automatically
start opening the crest gates to maintain
tailwater elevation at the powerhouse
within the proposed ramping rate
criteria. This would ensure an
uninterrupted flow of water
downstream of the project tailrace. The
proposed crest gate operations, as
proposed by Okanogan PUD, would
protect and maintain aquatic habitat
downstream of the project. Downstream
aquatic habitat, including UCR
steelhead designated critical habitat and
Chinook salmon EFH below
Similkameen Falls, would be protected
in the event of operating emergencies or
planned outages. Based on this, we
conclude there would be no need for a
specific flow continuation plan as
recommended by Interior.
Evidence of Financial Capability for
Project Decommissioning
Washington DFW recommends that
Okanogan PUD provide evidence of
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
financial securities to ensure that at the
end of any license, they would be
capable of decommissioning the project.
The Commission has consistently
denied requests for decommissioning
cost studies and establishment of
decommissioning funds in licenses
where the project is determined to be
economically and physically sound, not
to have significant adverse
environmental impacts, no party has
suggested decommissioning in the
foreseeable future after project
construction, and there is no indication
that the licensee would lack the
financial resources to decommission the
project if it were to be decommissioned.
Commission policy states that a
theoretical risk of licensee’s inability to
pay for decommissioning is insufficient
basis for requiring a decommissioning
fund or evidence of financial securities.
Therefore, we do not recommend this
measure.
sroberts on DSK69SOYB1PROD with NOTICES
Vegetation Resources Management Plan
Interior and Washington DFW
recommend the development of a
Vegetation Resources Management Plan
that would include the measures
contained in Okanogan PUD’s
Vegetation Plan, but also include
additional measures, such as long-term
monitoring of restored areas, GIS
mapping, and creation of a digital
database. We discuss the agencies’
recommended additional measures in
the following sections and conclude that
they are not necessary. Therefore, the
levelized annual cost of $680 to develop
a Vegetation Resources Management
Plan that contains those additional
measures is not justified, and we do not
recommend development of such a
plan.
Long-Term Monitoring for Restored
(Revegetated) Areas and Surveys for the
Ute Ladies’-Tresses
Interior recommends a long-term
survey effort for restored (revegetated)
areas and threatened and endangered
plants. Specifically, Interior
recommends that Okanogan PUD
monitor restored upland, riparian, and
wetland habitat sites every year for 5
years, continue monitoring every 5 years
thereafter, and replant sites as needed;
and survey for threatened and
endangered plants within 1 year of
license issuance and every 5 years
thereafter for the duration of any
license.
Okanogan PUD proposes in its
Vegetation Plan to monitor restored
areas annually for 5 years and to plant
additional willows if performance
criteria are not met, but states that
monitoring should be discontinued once
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
the criteria are met. We estimated that
the levelized annual cost of Interior’s
recommended monitoring schedule
would be $6,770. Monitoring restored
areas after the new plantings have met
performance criteria would serve no
purpose, would not warrant the cost,
and would not be in the public interest.
Therefore, we cannot support this
recommendation.
The only threatened or endangered
plant with suitable habitat in the project
area is Ute ladies’-tresses, and Okanogan
PUD’s surveys did not locate any
individuals of this species. Monitoring
for Ute ladies’-tresses for an additional
3 years, as Okanogan PUD proposes,
would be adequate to confirm the
presence or absence of this plant. If the
surveys identify Ute ladies’-tresses in
areas that could be affected by the
proposed project, developing a plan,
after consultation with the agencies, to
avoid or minimize adverse impacts, as
staff recommends, would be appropriate
to protect these plants. Monitoring
according to Interior’s recommended
schedule would have a levelized annual
cost of $4,740, and because the
additional monitoring would not be
expected to provide greater protection to
the species, the cost is not warranted.
Therefore, we do not recommend
Interior’s schedule for threatened and
endangered plant monitoring.
GIS Mapping and Digital Database
Interior recommends GIS mapping
and development of a digital database
for sensitive species, noxious weeds,
and habitat restoration sites, to assist in
associated management activities at the
project. Sufficient information exists on
the location of sensitive species,
noxious weeds, and habitat, with the
exception of the side channel
enhancement site that would be
included in the proposed 3 years of
surveys for Ute ladies’-tresses. Staff
estimates that GIS mapping and the
creation of a digital database would
have an estimated levelized annual cost
of $1,020. Staff supports Okanogan
PUD’s proposals for monitoring restored
areas and noxious weeds and
conducting Ute ladies’-tresses surveys,
but finds that using the monitoring and
survey results to create GIS mapping
and a digital database is not needed to
manage project lands and their cost do
not justify the benefits. Therefore, staff
does not recommend these measures.
Wildlife Management Plan
Interior and Washington DFW
recommend the development of a
Wildlife Management Plan that would
include Okanogan PUD’s proposed
wildlife habitat mitigation measures, but
PO 00000
Frm 00109
Fmt 4701
Sfmt 4703
28613
also include additional measures, such
as visually marking the transmission
line, installing a maintaining nest boxes
and artificial perch poles, placing
seasonal restrictions on project
activities, installing barriers on
irrigation tunnels, and creating a 200foot wetland/riparian buffer. We discuss
each of the agencies’ individual
additional measures separately, and
conclude that, with the exception of the
artificial perch poles as discussed
above, the measures are not necessary.
Therefore, the levelized annual cost of
$680 to develop a Wildlife Management
Plan that contains those additional
measures is not justified, and we do not
recommend development of such a
plan.
Visual Marking of Transmission Line
Interior and Washington DFW
recommend visual marking of the
transmission line crossing the
Similkameen River to prevent bald
eagles and other birds from colliding
with the line. We do not recommend
this measure because the line would not
cross the Similkameen River.
Nest Boxes
Interior and Washington DFW
recommend installing and maintaining
nest boxes for small birds in areas that
lack natural tree cavities. The agencies
have not specified the number of nest
boxes or the target species, nor have
they documented the need for
enhancing such species at the project.
Therefore, we cannot estimate the total
cost or support this recommendation at
this time.
Seasonal Restrictions on Project
Activities
Interior and Washington DFW
recommend excluding project activities
during the winter hibernation period for
Townsend’s big-eared bats. This
recommendation lacks specific activities
that would be excluded and could result
in Okanogan PUD’s inability to operate
and properly maintain the project
facilities. Therefore, we do not
recommend this measure.
Barriers on Tunnels
Interior and Washington DFW
recommend installing barriers on the
OTID’s abandoned irrigation tunnels to
prevent human disturbance of
Townsend’s big-eared bats in the
tunnels. Only one OTID tunnel has an
entrance within the project boundary.
Entrance to this tunnel is prevented due
to landslide blockage. Tunnels with
greater bat habitat potential are located
near Shanker’s Bend and further
upstream, and are far enough from the
E:\FR\FM\17MYN2.SGM
17MYN2
28614
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
project site that recreational or
construction activity associated with the
project would be unlikely to affect bats
using those tunnels. Therefore, we do
not recommend installing barriers on
the abandoned irrigation tunnel.
sroberts on DSK69SOYB1PROD with NOTICES
200-Foot Wetland/Riparian Buffer
Washington DFW recommends
providing a 200-foot wetland/riparian
buffer to protect and enhance wildlife
habitat. Under existing conditions,
wetlands occur in scattered patches
along the reservoir, and riparian shrub
and forest communities occur in a
narrow fringe along the reservoir, with
the largest stand consisting of riparian
forest on the east side of the reservoir
just upstream from Enloe dam. With the
exception of the riparian forest area just
upstream from the dam, there are no
200-foot-wide areas of wetland/riparian
habitat within the project boundary, and
we do not expect the use of flashboards
on the dam to foster a 200-foot-wide
zone of wetland/habitat area around the
reservoir. The substrate along the
reservoir is unsuitable in places (i.e.,
rocks) for wetland/riparian habitat.
Therefore, providing a 200-foot
wetland/riparian buffer around the
entire reservoir would be impossible.
Further, we conclude that the measures
in the Vegetation Plan, including the
planting of riparian vegetation and
restoration of the existing shoreline road
segment that traverses riparian forest,
are adequate to protect and enhance
riparian wildlife habitat, and a 200-foot
buffer is not warranted.
Recreation and Land Use
BLM recommends that Okanogan
PUD provide a footbridge to the west
side of the Similkameen River at the
project. Access to the west side of the
Similkameen River is not needed due to
the lack of public facilities and
recreation opportunities (existing or
proposed) on that side. Therefore, the
provision for adding a footbridge to the
west side of the Similkameen River
downstream of the dam is not warranted
because there is no project effect or need
that would benefit from the measure
BLM recommends.
BLM recommends that Okanogan
PUD remove two small, deteriorating
buildings at the north end of the
proposed Enloe Dam Recreation Area.
Okanogan PUD states that one of two
small structures on the north end of the
proposed Enloe dam recreation area is
owned by a private landowner that
maintains a lease with BLM. Okanogan
PUD states it is not in a position to
remove BLM-leased structure. Although
staff recommended removal of the
unused pump house earlier in this
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
section under Additional StaffRecommended Measures, removal of the
BLM-leased pump house at the north
end of the proposed recreation area is
not warranted because it does not
interfere with the project operation and
it is being used for private purposes. We
conclude that these measures would not
be worth the estimated levelized annual
cost of $1,350.
Interior recommends that Okanogan
PUD provide recreational development
at the Miner’s Flat site, including
parking areas, water access for
launching and landing boats, installing
an information kiosk with a map,
establishing primitive campsites,
including picnic tables and steel fire
rings, and installing a vault toilet.47
Miner’s Flat is BLM-owned and
operated, and it is reasonable to assume
BLM will continue to operate and
maintain the site throughout a new
license term. Moreover, Okanogan PUD
has proposed to develop formalized
campsites within the project boundary
and staff is recommending a river access
site within BLM’s Miner’s Flat
recreation site for a boating take-out.
These measures provide sufficient
access to formal campsites and waterbased recreation at the project.
Therefore, making BLM’s Miner’s Flat
recreation area a project feature and
bringing the entire site into the project
boundary would not be justified. We
conclude that the cost for BLM’s
recommendation would not be worth
the estimated levelized annual cost of
$23,460.
BLM recommends that Okanogan
PUD provide for law enforcement and
emergency services plan, including
funds. The Commission is concerned
with protecting resources through
specific measures enforceable as to the
licensee, rather than requiring a licensee
to provide funding to another entity,
because the Commission would have no
way of assuring that the activity paid for
by the licensee would actually serve a
project purpose or ameliorate a project
effect. Moreover, while enforcement of
the requirements of any license would
be Okanogan PUD’s responsibility,
enforcement of local laws within the
project area and the river basin is not a
matter of Commission jurisdiction but is
the responsibility of local law
enforcement agencies. Therefore, we do
not recommend this provision with an
estimated levelized annual cost of
$15,140.
47 BLM also recommends Okanogan PUD provide
recreation site grounds maintenance. Grounds
maintenance is included in Okanogan PUD’s
proposal and is included in the normal, day-to-day
O&M costs for the project.
PO 00000
Frm 00110
Fmt 4701
Sfmt 4703
Cultural Resources
Interior recommends Okanogan PUD
revise its May 2009 HPMP to allow at
least 5 years during which Okanogan
PUD would solicit and review offers to
parties that might be interested in
acquiring the historic Enloe
powerhouse. We do not recommend this
measure. Instead, Okanogan PUD’s May
2009 HPMP proposes, and we
recommend, a 4-year provision. If a new
owner is not identified within 4 years,
Okanogan PUD would consult with the
CRWG, which includes the
Commission, to identify appropriate
mitigation options prior to demolishing
the structure. If demolition is
determined necessary, a Memorandum
of Agreement between the Commission
and the Washington SHPO would be
developed that would identify agreedupon mitigation measures. We conclude
that Interior did not provide any
evidence to indicate why 4 years is
insufficient to allow parties to come
forward with an offer for acquiring the
historic Enloe powerhouse.
Conclusion
Based on our review of the agency
and public comments filed on the
project and our independent analysis
pursuant to sections 4(e), 10(a)(1), and
10(a)(2) of the FPA, we conclude that
licensing the Enloe Project, as proposed
by Okanogan PUD (with the exception
of the boulder clusters and entrainment
and resident fish monitoring), with
additional staff-recommended measures,
would be best adapted to a plan for
improving or developing the
Similkameen River watershed.
5.3
Unavoidable Adverse Effects
Although Okanogan PUD proposes to
implement a Blasting Plan and BMPs, it
is expected that blasting would cause
short-term disturbance to fish. It is not
expected that there would be any longterm effects.
Although Okanogan PUD proposes to
implement an ESCP, a CSMP, and use
appropriate BMPs, it is expected that
sediment transport created by project
construction would cause short-term
disturbances to fish and aquatic species
in the project area. These effects are
expected to be short-term and should
have no lasting impact.
There would be a short-term loss of
riparian and wetland habitats resulting
from the change in reservoir elevation.
The long-term effect of this change
would be minimal due to the planting
of native riparian species.
There would be a reduction of flow in
the bypassed reach which would reduce
fish habitat and DO in this short reach
E:\FR\FM\17MYN2.SGM
17MYN2
28615
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
and reduce the aesthetics of flows over
Similkameen Falls. Raising of the
reservoir by 4 feet would convert 16
acres of riparian habitat to aquatic
habitat; however, new riparian habitat
would be established and enhanced
with vegetative planting.
5.4 Fish and Wildlife Agency
Recommendations
Under the provisions of section 10(j)
of the FPA, each hydroelectric license
issued by the Commission shall include
conditions based on recommendations
provided by federal and state fish and
wildlife agencies for the protection,
mitigation, and enhancement of fish and
wildlife resources affected by the
project.
Section 10(j) of the FPA states that
whenever the Commission believes that
any fish and wildlife agency
recommendation is inconsistent with
the purposes and the requirements of
the FPA or other applicable law, the
Commission and the agency will
attempt to resolve any such
inconsistency, giving due weight to the
recommendations, expertise, and
statutory responsibilities of such
agency.
In response to our REA notice, the
following fish and wildlife agencies
submitted recommendations for the
project: NMFS (letter filed February 26,
2010); Interior, on behalf of BLM and
FWS (letter filed February 26, 2010);
and Washington DFW (letter filed
February 26, 2010). Table 23 lists the
federal and state recommendations filed
subject to section 10(j) and whether the
recommendations are adopted under the
staff alternative. Environmental
recommendations that we consider
outside the scope of section 10(j) have
been considered under section 10(a) of
the FPA and are addressed in the
specific resource sections of this
document and the previous section.
Of the 35 recommendations that we
consider to be within the scope of 10(j),
we wholly include 28, include 1 in part,
and do not include 6. We discuss the
reasons for not including those
recommendations below in table 24.
TABLE 24—FISH AND WILDLIFE AGENCY RECOMMENDATIONS FOR THE ENLOE HYDROELECTRIC PROJECT
[Source: Staff]
Recommendation
Agency
Within the scope of 10(j)
Annualized cost
Adopted or not adopted
Downstream Water Quality
NMFS ................................
Yes ....................................
$5,060 ...............................
Adopted.
NMFS ................................
Yes ....................................
$3,850 ...............................
Adopted.
NMFS ................................
Yes ....................................
$5,500 ...............................
Implement the ESCP .........
Implement the spill prevention, containment and
clean-up plan.
Allow Washington DFW,
tribes, and other interested resource agencies
to inspect the project site
during construction and
operation.
Develop an adaptive management plan.
NMFS ................................
NMFS ................................
Yes ....................................
Yes ....................................
$1,460 ...............................
$1,820 ...............................
Not adopted—5 years of
monitoring likely would
be adequate to characterize DO conditions.
Also, monitoring could
be extended if needed
by the TRG after the
first 5 years.
Adopted.
Adopted.
Washington DFW ..............
No—not a specific measure to protect fish and
wildlife.
n/a .....................................
Adopted—provided that
adequate notice is
given.
Washington DFW ..............
No—not a specific measure to protect fish and
wildlife.
n/a .....................................
Provide evidence of finanWashington DFW ..............
cial security to ensure
that Okanogan PUD
would be capable of
project decommissioning
at the end of any license.
sroberts on DSK69SOYB1PROD with NOTICES
Improve DO concentrations
during low flow period by
providing aeration in the
draft tubes.
Monitor and report water
temperature and TDG
concentrations for 5
years.
Monitor and report DO
concentrations for life of
the license.
No—not a specific measure to protect fish and
wildlife.
n/a .....................................
Adopted—Okanogan
PUD’s proposed biological review process appears to fulfill the recommendation.
Not adopted—theoretical
risk of applicant’s inability to pay for decommissioning is insufficient
basis for requiring.
Fisheries Enhancement Measures
Construct and file detailed
design drawings of an
intake fish screen.
Interior, Washington DFW
Yes ....................................
$16–$24M .........................
Implement a powerhouse
operational plan.
Interior ...............................
Yes ....................................
$340 ..................................
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00111
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
Not adopted—Okanogan
PUD’s proposed trash
rack will provide adequate protection at significantly less cost.
Adopted.
28616
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
TABLE 24—FISH AND WILDLIFE AGENCY RECOMMENDATIONS FOR THE ENLOE HYDROELECTRIC PROJECT—Continued
[Source: Staff]
sroberts on DSK69SOYB1PROD with NOTICES
Recommendation
Agency
Within the scope of 10(j)
Annualized cost
Provide continuous
instream flows in the bypassed reach.
Design and construct
tailrace net barriers and
implement associated
plans.
Implement side-channel/
off-channel development/
enhancement at locations in the lower
Similkameen River or
near the Okanogan
River.
Implement gravel supplementation downstream of Enloe dam.
Transport downstream and
place large woody debris
captured at the project’s
intake and trashrack.
Stock sterile triploid rainbow trout to support a
recreational fishery upstream of Enloe dam.
Provide ramping rates during project start-up and
shut-down.
Select the location for
ramping rate monitoring
in consultation with
NMFS, FWS, Washington DFW, the Yakima,
and the Colville.
Develop a Wildlife Management Plan including
the following measures:
Restore the existing unimproved shoreline road
along Enloe reservoir to
a natural condition, eliminating the current interruption between the
shoreline and upland
habitat.
Relocate access road to
the reservoir.
Locate the project’s existing and proposed transmission lines and pole to
prevent raptor electrocution and include the line
within the project boundary.
Include a provision to
avoid disturbing foraging
bald eagles between October 31 and March 31
in the schedules for
project and transmission
line construction.
Washington DFW ..............
Yes ....................................
$37,940 .............................
Adopted.
Interior, NMFS, Washington DFW.
Yes ....................................
$9,580 ...............................
Adopted.
Interior, NMFS, Washington DFW.
Yes ....................................
$30,210 .............................
Adopted.
Interior, NMFS, Washington DFW.
Yes ....................................
$11,950 .............................
Adopted.
Interior ...............................
Yes ....................................
$4,300 ...............................
Adopted.
Interior, Washington DFW
Yes ....................................
$10,340 .............................
Interior, NMFS, Washington DFW.
Yes ....................................
$0 ......................................
Not adopted—Stocked
trout pose a disease and
competition risk to native
populations.
Adopted.
Interior, NMFS, Washington DFW.
Yes ....................................
n/a .....................................
Adopted.
Interior, Washington DFW
Yes ....................................
$680 ..................................
Adopted (for preparing
plan).
Interior, Washington DFW
Yes ....................................
b $26,920
...........................
Adopted.
Interior, Washington DFW
Yes ....................................
Adopted.
Interior, Washington DFW
Yes ....................................
Cost included in measure
above.
minimal ..............................
Adopted.
Interior, Washington DFW
Yes ....................................
$9,100 ...............................
Adopted.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00112
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
Adopted or not adopted
28617
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
TABLE 24—FISH AND WILDLIFE AGENCY RECOMMENDATIONS FOR THE ENLOE HYDROELECTRIC PROJECT—Continued
[Source: Staff]
Agency
Within the scope of 10(j)
Retain dead trees along
the reservoir unless they
become a hazard, and
install 10 artificial perch
poles along the reservoir
shoreline and in places
where perch trees are
sparse or lacking, and
maintain, repair, or replace perch poles as
necessary.
Plant native riparian trees,
grasses, and shrubs,
when they are called for.
Part of BOTA–02, 04,
and 05.
Visually mark the section
of the project transmission line crossing the
Similkameen River.
Install nest boxes for small
birds in areas that lack
snags or natural tree
cavities.
Install barriers on irrigation
canal tunnels to prevent
human entry while still
allowing use by bats.
Interior, Washington DFW
Yes ....................................
a $680
................................
Adopted.
Interior, Washington DFW
Yes ....................................
$6,730 ...............................
Adopted.
Interior, Washington DFW
No—no relationship to proposed project.
minimal ..............................
Interior, Washington DFW
No—number of boxes and
type unspecified.
a $25/box
Not adopted—The transmission line does not
cross the Similkameen
River.
Not adopted—Insufficient
detail on measure and
support for need.
Interior, Washington DFW
Yes ....................................
a $140
Exclude project activities in
the winter hibernation
period for bats.
Interior, Washington DFW
No—not a specific measure; specific activities
undefined.
n/a .....................................
Provide a 200-foot wetland/riparian buffer.
sroberts on DSK69SOYB1PROD with NOTICES
Recommendation
Washington DFW ..............
Yes ....................................
n/a .....................................
Develop a Vegetation Resources Management
Plan.
Plant fast-growing native
shade producing trees
along the reservoir, such
as native willows, alders,
and/or cottonwoods.
Abandon and restore the
existing shoreline road.
Plant riparian species
along abandoned road
corridor.
Plant riparian species on
the east and west banks
downstream of
Shanker’s Bend.
Install grazing control
measures, including
fencing to protect sensitive riparian areas and
restored sites.
Monitor restored areas (upland sites, riparian and
wetland sites) every year
for 5 years and continue
monitoring every 5 years
thereafter and replant
sites as needed.
Interior, Washington DFW
Yes ....................................
$680 ..................................
Interior, Washington DFW
Yes ....................................
b $4,730
Interior, Washington DFW
Yes ....................................
b $26,920
Interior, Washington DFW
Yes ....................................
Interior, Washington DFW
VerDate Mar<15>2010
Annualized cost
...........................
................................
.............................
Adopted or not adopted
Not adopted—Tunnel near
Enloe dam blocked by
landslide and other tunnels are far enough
away from activity to not
warrant barriers.
Not adopted—Generic exclusion could prohibit
necessary project activities.
Not adopted—The measures in the Vegetation
Plan are adequate to
protect riparian habitat
Adopted (for preparing
plan).
Adopted.
...........................
Adopted.
b $1,090
.............................
Adopted.
Yes ....................................
b $1,460
.............................
Adopted.
Interior, Washington DFW
Yes ....................................
b $1,820
.............................
Adopted.
Interior, Washington DFW
Yes ....................................
a $6,770
.............................
Adopted in part—Staff recommends monitoring for
5 consecutive years and
once in year 8.
17:53 May 16, 2011
Jkt 223001
PO 00000
Frm 00113
Fmt 4701
Sfmt 4703
E:\FR\FM\17MYN2.SGM
17MYN2
28618
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
TABLE 24—FISH AND WILDLIFE AGENCY RECOMMENDATIONS FOR THE ENLOE HYDROELECTRIC PROJECT—Continued
[Source: Staff]
Recommendation
Agency
Within the scope of 10(j)
Annualized cost
Employ BMPs during construction and implementation to protect riparian
and wetland vegetation.
Provide biological monitoring during construction to ensure minimal
impact to aquatic and
terrestrial resources.
Implement a noxious weed
control program.
Survey for and document
threatened and endangered plants within one
year of the license
issuance and every 5
years thereafter for the
duration of the license.
Interior, Washington DFW
Yes ....................................
b $180
Interior, Washington DFW
Yes ....................................
b $5,240
.............................
Adopted.
Interior, Washington DFW
Yes ....................................
b $2,290
.............................
Adopted.
Interior, Washington DFW
Yes ....................................
$4,740 ...............................
................................
Adopted or not adopted
Adopted.
Not adopted—Okanogan
PUD’s proposed measures are adequate to
protect resources.
Note: Unless otherwise noted, all costs are from Okanogan PUD.
a Estimated by Staff.
b Part of Okanogan PUD’s Vegetation Plan.
sroberts on DSK69SOYB1PROD with NOTICES
5.5 Consistency With Comprehensive
Plans
Section 10(a)(2)(A) of the FPA, 16
U.S.C. 803(a)(2)(A), requires the
Commission to consider the extent to
which a project is consistent with the
federal or state comprehensive plans for
improving, developing, or conserving a
waterway or waterways affected by the
project. We reviewed 23 comprehensive
plans that are applicable to the Enloe
Project, located in Washington State. No
inconsistencies were found.
Bureau of Land Management. 1987. Spokane
resource area management plan.
Department of the Interior, Spokane,
Washington. May 1987.
Bureau of Land Management. U.S. Forest
Service. 1994. Standards and guidelines
for management of habitat for latesuccessional and old-growth forest
related species within the range of the
northern spotted owl. Washington, D.C.
April 13, 1994.
Interagency Committee for Outdoor
Recreation. 1995. State of Washington
outdoor recreation and habitat:
Assessment and policy plan 1995–2001.
Tumwater, Washington. November 1995.
Interagency Committee for Outdoor
Recreation. 1991. Washington State trails
plan: policy and action document.
Tumwater, Washington. June 1991.
Interagency Committee for Outdoor
Recreation. 2002. Washington State
Comprehensive Outdoor Recreation
Planning Document (SCORP): 2002–
2007. Olympia, Washington. October
2002.
Northwest Power and Conservation Council.
2009. Columbia River Basin fish and
wildlife program. Portland, Oregon.
Council Document 2009–09. October
2009.
Northwest Power and Conservation Council.
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
2010. The Sixth Northwest conservation
and electric power plan. Portland,
Oregon. Council Document 2010–09.
February 2010.
Northwest Power and Conservation Council.
1988. Protected areas amendments and
response to comments. Portland, Oregon.
Council Document 88–22 (September 14,
1988).
Northwest Power and Conservation Council.
2003. Mainstem amendments to the
Columbia River Basin fish and wildlife
program. Portland, Oregon. Council
Document 2003–11.
State of Washington. 1977. Statute
establishing the State scenic river
system, Chapter 79.72 RCW. Olympia,
Washington.
U.S. Fish and Wildlife Service. Undated.
Fisheries USA: the recreational fisheries
policy of the U.S. Fish and Wildlife
Service. Washington, DC.
U.S. Fish and Wildlife Service. Canadian
Wildlife Service. 1986. North American
waterfowl management plan. Department
of the Interior. Environment Canada.
May 1986.
Washington Department of Community
Development. Office of Archaeology and
Historic Preservation. 1987. A resource
protection planning process
identification component for the eastern
Washington protohistoric study unit.
Olympia, Washington.
Washington Department of Community
Development. Office of Archaeology and
Historic Preservation. 1989. Resource
protection planning process—study unit
transportation.
Washington Department of Ecology. 1978.
Water resources management program—
Okanogan River Basin. Olympia,
Washington. February 1978.
Washington Department of Ecology. 1986.
Application of shoreline management to
hydroelectric developments. Olympia,
Washington. September 1986.
PO 00000
Frm 00114
Fmt 4701
Sfmt 4703
Washington Department of Fisheries. 1987.
Hydroelectric project assessment
guidelines. Olympia, Washington.
Washington Department of Game. 1987.
Strategies for Washington’s wildlife.
Olympia, Washington. May 1987.
Washington Department of Natural
Resources. 1987. State of Washington
natural heritage plan. Olympia,
Washington.
Washington Department of Natural
Resources. 1997. Final habitat
conservation plan. Olympia,
Washington. September 1997.
Washington State Energy Office. 1992.
Washington State hydropower
development/resource protection plan.
Olympia, Washington. December 1992.
Washington State Parks and Recreation
Commission. 1988. Washington State
scenic river assessment. Olympia,
Washington. September 1988.
Washington State Parks and Recreation
Commission. 1988. Scenic rivers
program—report. Olympia, Washington.
January 29, 1988.
6.0 Finding of No Significant Impact
Construction and operation of the
Enloe Project, with our recommended
measures, involves land disturbing
activities associated with access road
clearing and grading and excavation of
intake channel, powerhouse, and
powerhouse tailrace. There would be a
temporary loss of riparian and wetland
habitats from the increased reservoir
operating level. There may also be shortterm turbidity and contamination
caused from the resuspension of
reservoir sediments and in-water
excavation of the powerhouse tailrace
channel. Our recommended measures
would ensure water quality standards
are not exceeded, ensure protection of
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
anadromous and resident fish, restore
riparian vegetation, protect and enhance
public access and recreation
opportunities, and protect cultural and
historic resources.
On the basis of our independent
analysis, we find that the issuance of a
license for the Enloe Project, with our
recommended environmental measures,
would not constitute a major federal
action significantly affecting the quality
of the human environment.
sroberts on DSK69SOYB1PROD with NOTICES
7.0
Literature Cited
Altman, B. and A. Holmes. 2000.
Conservation strategy for landbirds in
the Columbia Plateau of eastern Oregon
and Washington. Final Report Version
1.0. Oregon-Washington Partners in
Flight, Boring, OR.
Bayer, K.C. 1983. Generalized structural,
lithologic, and physiographic provinces
in the fold and thrust belts of the United
States (exclusive of Alaska and Hawaii).
U.S. Geological Survey. Scale:
1:2,500,000.
Boreson, K. 1992. A report of test excavations
at three sites near Enloe on the
Similkameen River, Okanogan County,
WA. Archaeological and Historical
Services, Eastern Washington University,
Cheney, WA.
Chapman, D., C. Peven, T. Hillman, A.
Giorgi, and F. Utter. 1994. Status of
summer steelhead in the mid-Columbia
River. Don Chapman Consultants, Inc.
(now BioAnalysts, Inc., Eagle, ID.), Boise,
ID.
Christensen Associates. 2007. Restoration of
renewable hydropower generation at
Enloe dam. Geology Report. April 2007.
City of Oroville. 2010. City of Oroville’s
webpage. https://oroville-wa.com/.
Accessed April 12, 2010. Oroville,
Washington.
ENTRIX, Inc. (ENTRIX). 2009. Similkameen
River Appraisal Level Study. Prepared
for Okanogan County Public Utility
District No. 1 of Okanogan. Prepared by
ENTRIX, Inc., Seattle, WA. April 2009.
ENTRIX, Inc. 2007. Fish distribution and
habitat use of the Similkameen River in
Relation to the Enloe Dam, Draft Report.
ENTRIX, Inc., Olympia, WA.
ENTRIX. 2006. Okanogan River watershed
resource inventory area 49, level I water
quality technical assessment (Project No.
4138301). Prepared for Okanogan County
Watershed Planning Unit, Okanogan,
WA. Prepared by ENTRIX, Inc., Seattle,
WA. June 2006.
EPA (U. S. Environmental Protection
Agency). 2007. EPA identifies noise
levels affecting health and welfare.
https://www.epa.gov/history/topics/noise/
01.htm. Accessed April 30, 2008.
EPA. 1974. Information on levels of
environmental noise requisite to protect
public health and welfare with an
adequate margin of safety. https://
www.nonoise.org/library/levels74/
levels74.htm. Accessed April 30, 2008.
Fertig, W., R. Black, and P. Wolken. 2005.
Rangewide status review of Ute ladies’-
VerDate Mar<15>2010
17:56 May 16, 2011
Jkt 223001
tresses (Spiranthes diluvialis). Prepared
for the U.S. Fish and Wildlife Service
and Central Utah Water Conservancy
District. 30 September 2005.
Ford, J, 2010a. Paleolimnological
investigations in the Palmer Lake
Watershed, Okanogan County,
Washington. Phase I report for the
Columbia River Intertribal Fish
Commission.
Ford, J. 2010b. Further reflections concerning
Paleolimnological investigations in the
Palmer Lake Watershed, Okanogan
County, Washington: Phase I report.
Department of Fisheries and Wildlife,
Oregon State University, Corvallis, OR.
Franklin, J. F., and C.T. Dyrness. 1973.
Natural vegetation of Oregon and
Washington. U.S. Department of
Agriculture, Forest Service, General
Technical Report PNW–8. Portland,
Oregon.
FWS. 2010. Listed and proposed endangered
and threatened species and critical
habitat; candidate species; and species of
concern in Okanogan County,
Washington as prepared by the U.S. Fish
and Wildlife Service, Central
Washington Fish and Wildlife Field
Office. Revised May 4, 2009. https://
www.fws.gov/wafwo/pdf/
Okanogan_Cty_5-4-09.pdf Accessed
March 4, 2010.
FWS. 2008. Final recovery plan for the
northern spotted owl (Strix occidentalis
caurina). Region 1, U.S. Fish and
Wildlife Service, Portland, Oregon. May
13, 2008.
FWS. 2004. Species Assessment and Listing
Priority Recovery Form—Grizzly Bear
Populations in the North Cascades
Ecosystem. U.S. Fish and Wildlife
Service. https://www.fws.gov/
mountainprairie/species/mammals/
grizzly/grizzlybearCascades2004.pdf.
Accessed March 4, 2010. FWS. 2008.
Final recovery plan for the northern
spotted owl (Strix occidentalis caurina).
Region 1, U.S. Fish and Wildlife Service,
Portland, OR. May 13.
Galm, J. 1991. Cultural resource investigation
of the Enloe Project, Okanogan County,
WA. Archaeological and Historical
Services, Eastern Washington University,
Cheney, WA.
Hunter, M. A. 1992. Hydropower flow
fluctuations and salmonids: A review of
the biological effects, mechanical causes,
and options for mitigation. Tech. Report
No. 119, Washington DFW, Olympia,
WA.
IEC Beak Consultants. 1984. Natural
propagation and habitat improvement—
Similkameen River, Washington. Habitat
Inventory, Volume I and II, Final Report.
Johnson, A. 2002. A total maximum daily
load evaluation for arsenic in the
Similkameen River: Section 303(d)
listings waterbody No. WA-49-1030,
arsenic. Washington DOE, Publication
No. 02–03–044.
KWA Ecological Sciences Inc., Okanogan
County, the Colville Confederated
Tribes, Okanogan Nation Alliance. 2004.
Okanogan Subbasin Plan. Prepared for
the Northwest Power and Conservation
PO 00000
Frm 00115
Fmt 4701
Sfmt 4703
28619
Council by the lead agencies referenced
and numerous other contributors.
Available at: https://www.nwcouncil.org/
fw/subbasinplanning/okanogan/plan/.
MacDonald D.D., C.G. Ingersoll and T.A.
Berger. 2000. Development and
evaluation of consensus-based sediment
quality guidelines for freshwater
ecosystems. Arch. Environ. Contam.
Toxicol. 39:20–31.
Mathewson, C.C., T. Gonzalez, and J. S.
Eblen. 1992. Burial as a method of
archaeological site protection. Prepared
for U.S. Army Corps of Engineers,
Vicksburg, MS. Prepared by Center for
Engineering Geosciences, Texas A&M
University, College Station, TX.
MaxDepth. 2006. Hydroacoustic Survey of
bathymetry, sediment accumulation, and
fish populations in Enloe Impoundment,
Washington. Prepared for Okanogan
Public Utility District No. 1, Okanogan,
WA. Prepared by MaxDepth Aquatics,
Inc., Bend, OR. June 2006.
Myers, J. 2010. Review of Ford, J. 2010
paleolimnological investigations in the
Palmer Lake Watershed, Okanogan
County, WA.
Michelsen, T. 2003. Development of
freshwater sediment quality values for
use in Washington state: Phase II report:
Development and recommendation of
SQVs for freshwater sediments in
Washington State. Publication No. 03–
09–088. Prepared for Toxics Cleanup
Program, Sediment Management Unit,
Washington Department of Ecology.
Prepared by Avocet Consulting.
Moyle, P. B. 2002. Inland fishes of California:
Revised and Expanded. University of
California Press. 502 p.
NERC (North American Electric Reliability
Corporation). 2010. 2010 Long-term
reliability assessment to ensure the
reliability of the bulk power system.
Princeton, NJ. October 2010.
Nedeau, E. A. K. Smith, J. Stone. 2010.
Mussels of the Pacific Northwest.
Accessed on line May 1, 2010 at:
https://www.fws.gov/columbiariver/mwg/
pdfdocs/Pacific_Northwest_Mussel_
Guide.pdf.
Okanogan County. 2010. Nighthawk trail.
Available at: https://
www.okanogancounty.org/planning/pdf/
Nighthawk%20Trail.jpg. Accessed
November 11, 2010.
Okanogan PUD (Public Utility District No. 1
of Okanogan County). 2010. Enloe
Hydroelectric Project (FERC Project No.
12569): Response to comments on
FERC’s ready for environmental analysis
notice. Public Utility District No. 1 of
Okanogan County, Okanogan, WA. April
9, 2010.
Okanogan PUD. 2009a. Enloe Hydroelectric
Project (FERC Project No. 12569):
Responses to FERC additional
information requests. Public Utility
District No. 1 of Okanogan County,
Okanogan, WA. January 26, 2009.
Okanogan PUD. 2009b. Enloe Hydroelectric
Project (FERC Project No. 12569):
Responses to FERC additional
information requests. Public Utility
E:\FR\FM\17MYN2.SGM
17MYN2
sroberts on DSK69SOYB1PROD with NOTICES
28620
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
District No. 1 of Okanogan County,
Okanogan, WA. February 27, 2009.
Okanogan PUD. 2009c. Enloe Hydroelectric
Project (FERC Project No. 12569):
Responses to FERC additional
information requests. Public Utility
District No. 1 of Okanogan County,
Okanogan, WA. July 21, 2009.
Okanogan PUD. 2009d. Enloe Hydroelectric
Project (FERC Project No. 12569):
Responses to FERC additional
information requests. Public Utility
District No. 1 of Okanogan County,
Okanogan, WA. September 21, 2009.
Okanogan PUD. 2009e. Final Historic
Properties Management Plan, Enloe Dam
Project licensing, FERC Project No.
12569. Prepared for Okanogan PUD,
Okanogan, WA. Prepared by ENTRIX,
Inc., Seattle, WA.
Okanogan PUD. 2009f. Section 106
addendum report for side channel
enhancement project, Enloe Dam Project
licensing, FERC Project No. 12569.
Prepared for Okanogan PUD, Okanogan,
WA. Prepared by ENTRIX, Inc., Seattle,
WA.
Okanogan PUD. 2009g. Recreation needs
assessment, Enloe Dam Project licensing,
FERC Project No. 12569. Okanogan PUD,
Okanogan, WA. April 2009.
Okanogan PUD. 2009h. Analysis of aesthetics
from the proposed recreation sites, Enloe
Dam Project licensing, FERC Project No.
12569. Okanogan PUD, Okanogan, WA.
May 29, 2009.
Okanogan PUD. 2008a. Enloe Hydroelectric
Project (FERC Project No. 12569): Final
license application. Public Utility
District No. 1 of Okanogan County,
Okanogan, WA. August 22, 2008.
Okanogan PUD. 2008b. Enloe dam licensing
project, Okanogan County, Washington,
final cultural resources Section 106
technical report. Prepared for Okanogan
PUD, Okanogan, WA. Prepared by
ENTRIX, Inc., Seattle, WA.
Okanogan PUD. 1991. Application for license
for major unconstructed project, Enloe
Hydroelectric Project, Project No. 10536.
Okanogan PUD, Okanogan, WA. June
1991.
Pacific Fisheries Management Council. 2010.
Habitat and communities: Essential fish
habitat web page. Available online at
https://www.pcouncil.org/habitat-andcommunities/habitat/. Accessed August
19, 2010. Pacific Fisheries Management
Council, Portland, OR.
Peterschmidt, M. and L. Edmond. 2004.
Lower Similkameen River total daily
maximum load. Publication Number 03–
10–074. Washington Department of
Energy and U.S. Environmental
Protection Agency.
PNRBC (Pacific Northwest River Basins
Commission). 1977. The Okanogan River
Basin Level B study of the water and
land related resources. Okanogan
Conservation District, Pacific Northwest
River Basins Commission, Okanogan,
WA.
Reclamation (U.S. Bureau of Reclamation).
2007. Dams, projects, and powerplants:
Chief Joseph Dam Project, Washington.
Available at https://www.usbr.gov/
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
dataweb/html/chiefjoseph.html.
Accessed March 29, 2007. U.S. Bureau of
Reclamation.
Salo, L.V. 1987. Similkameen River
multipurpose project feasibility study
cultural resource reconnaissance
technical report. U.S. Army Corps of
Engineers, Seattle District, Seattle, WA.
State Parks Commission (Washington State
Parks and Recreation Commission).
2010. Washington State Parks and
Recreation Commission’s Osoyoos Lake
webpage. https://www.parks.wa.gov/
parks/?selectedpark=Osoyoos%20Lake.
Accessed April 7, 2010. Washington
State Parks and Recreation Commission,
Olympia, WA.
Stinson. 2001. Stinson, D.W. 2001.
Washington State Recovery Plan for the
Lynx. Washington Department of Fish
and Wildlife, Wildlife Management
Program, Olympia, WA. June.
Thomas, J.W., E.D. Forsman, J.B. Lint, E.C.
Meslow, B.R. Noon, and J. Verner. 1990.
A conservation strategy for the northern
spotted owl: a report to the Interagency
Scientific Committee to address the
conservation of the northern spotted owl.
U.S. Forest Service, U.S. Fish and
Wildlife Service, and National Park
Service, Washington, DC. 427 pp.
U.S. Bureau of the Census. 2009a. City of
Oroville QuickFacts from the U.S.
Census Bureau. Available at: https://
censtats.census.gov/data/WA/
1605351970.pdf. Accessed April 12,
2009. U.S. Bureau of the Census.
U.S. Bureau of the Census. 2009b. Okanogan
County QuickFacts from the U.S. Census
Bureau. Available at: https://
quickfacts.census.gov/qfd/states/53/
53047.html. Accessed April 12, 2009.
U.S. Bureau of the Census.
USGS (United States Geological Survey).
2002. National seismic hazard map.
Earthquake Hazards Program website.
Available at: http:/earthquake.usgs.gov/
research/hazmaps/products_data/2002/
2002October/PN/PN1hz2500v3.pdf.
USGS–NEIC (National Earthquake
Information Center). 2007a. Significant
U.S. earthquakes (USHIS). Available at:
https://neic.usgs.gov/neis/epic/. U.S.
Geological Survey.
USGS–NEIC. 2007b. Preliminary
determination of epicenters catalog,
1973-present. U.S. Geological Survey.
Vedan, A. 2002. Traditional Okanogan
environmental knowledge and fisheries
management. Prepared by Okanogan
Nation Alliance, Westbank B.C., Canada.
Vinson, M. 1994. Aquatic benthic
macroinvertebrate monitoring report:
Similkameen River. U.S. Bureau of Land
Management, Spokane, WA.
Washington DOE (Washington DOE). 2005.
River and stream water quality
monitoring: 49B070—Similkameen R@
Oroville: Continuous temperature
monitoring results. Available at: https://
www.ecy.wa.gov/apps/watersheds/riv/
station.asp?theyear=
&tab=temperature&scrolly=
385&wria=49&sta=49B070. Washington
State Department of Ecology, Olympia,
WA.
PO 00000
Frm 00116
Fmt 4701
Sfmt 4703
Washington State Recreation and
Conservation Office. 2008. Defining and
Measuring Success: The Role of State
Government in Outdoor Recreation, A
State Comprehensive Outdoor Recreation
Planning Document. Washington State
Recreation and Conservation Office,
Olympia, WA. June 2008.
Weitkamp, D.E. and M. Katz. 1980. A review
of dissolved gas supersaturation
literature. Transactions of the American
Fisheries Society 109:659–702.
Wydoski, R. S. and R. R. Whitney. 1979.
Inland fishes of Washington. University
of Washington Press. 220 p.
8.0
List of Preparers
Federal Energy Regulatory Commission
Kim Nguyen—FERC Project Coordinator,
Need for Power, Geology and Soils
Resources, Water Quantity, and
Developmental Resources (Civil
Engineer; B.S., Civil Engineering)
Ryan Hansen—Aquatic Resources and Water
Quality (Fisheries Biologist; M.S.,
Environmental Science and Public
Policy; B.S. Biology)
Mark Ivy—Aesthetic Resources, Recreation
and Land Use, and Socioeconomics
(Outdoor Recreation Planner; Ph.D.,
Outdoor Recreation Management; M.S.,
Recreation & Resources Development;
B.S., Natural Resource Planning)
Shana Murray—Aesthetic Resources and
Recreation and Land Use (Outdoor
Recreation Planner; M.S., Recreation,
Park, and Tourism Management; B.S.,
Leisure Services)
Patricia Leppert—Cultural Resources
(Environmental Protection Specialist;
M.A. Recreation and Parks/Biology; B.S.
Recreation and Parks/Biology)
Dianne Rodman—Terrestrial Resources and
Threatened and Endangered Species
(Ecologist; M.S., Biology)
Kelly Wolcott—Terrestrial Resources and
Threatened and Endangered Species
(Environmental Biologist; M.S., Natural
Resources; B.S., Biology)
Louis Berger Group
Jim Holeman—Task Management (Senior
Environmental Manager; B.A., Wildlife
Management)
Alynda Foreman—Terrestrial Resources and
Threatened and Endangered Species
(Ecologist; M.S., Multidisciplinary
Studies; B.A., Biology)
Kenneth Hodge—Need for Power, Water
Quantity, and Developmental Analysis
(Senior Engineer; B.S., Civil Engineering)
Coreen Johnson—Editorial Review
(Technical Editor; B.A., English/
Education)
Lucy Littlejohn—Aquatic Resources and
Water Quality (Senior Fisheries
Biologist; M.S., Marine Science,
Department of Ichthyology; B.S., Natural
Science)
Alison Macdougall—Cultural Resources
(Senior Environmental Manager; B.A.,
Anthropology)
Jean Potvin—Recreation and Land Use,
Cultural Resources, Aesthetic Resources,
and Socioeconomics (B.S., Recreation
and Park Management)
E:\FR\FM\17MYN2.SGM
17MYN2
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 / Notices
Jane True—Graphics (Graphic Designer; B.A.,
Graphic Arts)
[FR Doc. 2011–11757 Filed 5–16–11; 8:45 am]
sroberts on DSK69SOYB1PROD with NOTICES
BILLING CODE 6717–01–P
VerDate Mar<15>2010
17:06 May 16, 2011
Jkt 223001
PO 00000
Frm 00117
Fmt 4701
Sfmt 9990
E:\FR\FM\17MYN2.SGM
17MYN2
28621
Agencies
[Federal Register Volume 76, Number 95 (Tuesday, May 17, 2011)]
[Notices]
[Pages 28506-28621]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2011-11757]
[[Page 28505]]
Vol. 76
Tuesday,
No. 95
May 17, 2011
Part II
Department of Energy
-----------------------------------------------------------------------
Federal Energy Regulatory Commission
-----------------------------------------------------------------------
Okanogan Public Utility District No. 1 of Okanogan County, WA; Notice
of Availability of Draft Environmental Assessment; Notice
Federal Register / Vol. 76, No. 95 / Tuesday, May 17, 2011 /
Notices
[[Page 28506]]
-----------------------------------------------------------------------
DEPARTMENT OF ENERGY
Federal Energy Regulatory Commission
[Project No. 12569-001]
Okanogan Public Utility District No. 1 of Okanogan County, WA;
Notice of Availability of Draft Environmental Assessment
In accordance with the National Environmental Policy Act of 1969
and the Federal Energy Regulatory Commission's (Commission or FERC's)
regulations, 18 Code of Federal Regulations (CFR) Part 380 (Order No.
486, 52 Federal Register [FR] 47897), the Office of Energy Projects has
reviewed Okanogan Public Utility District No. 1 of Okanogan County's
(Okanogan PUD) application for license for the Enloe Hydroelectric
Project (FERC Project No. 12569), located on the Similkameen River near
the city of Oroville in Okanogan County, Washington. Part of the
project would occupy a total of 35.47 acres of federal lands
administered by the U.S. Bureau of Land Management.
Staff prepared this draft environmental assessment (EA), which
analyzes the potential environmental effects of relicensing the
project, and concludes that licensing the project, with appropriate
environmental protective measures, would not constitute a major federal
action that would significantly affect the quality of the human
environment.
A copy of the draft EA is available for review at the Commission in
the Public Reference Room or may be viewed on the Commission's Web site
at https://www.ferc.gov using the ``eLibrary'' link. Enter the docket
number excluding the last three digits in the docket number field to
access the document. For assistance, contact FERC Online Support at
FERCOnlineSupport@ferc.gov or toll-free at 1-866-208-3676, or for TTY,
202-502-8659.
You may also register online at https://www.ferc.gov/docs-filing/esubscription.asp to be notified via e-mail of new filings and
issuances related to this or other pending projects. For assistance,
contact FERC Online Support.
Any comments should be filed within 30 days from the date of this
notice. Comments may be filed electronically via the Internet. See 18
CFR 385.2001(a)(1)(iii) and the instructions on the Commission's Web
site https://www.ferc.gov/docs-filing/efiling.asp. Commenters can submit
brief comments up to 6,000 characters, without prior registration,
using the eComment system at https://www.ferc.gov/docs-filing/ecomment.asp. You must include your name and contact information at the
end of your comments. For assistance, please contact FERC Online
Support. Although the Commission strongly encourages electronic filing,
documents may also be paper-filed. To paper-file, mail an original and
seven copies to: Kimberly D. Bose, Secretary, Federal Energy Regulatory
Commission, 888 First Street, NE., Washington, DC 20426.
For further information, contact Kim Nguyen by telephone at (202)
502-6105, or by e-mail at kim.nguyen@ferc.gov.
Dated: May 9, 2011.
Kimberly D. Bose,
Secretary.
Environmental Assessment for Hydropower License
Enloe Hydroelectric Project--FERC Project No. 12569--Washington
Federal Energy Regulatory Commission, Office of Energy Projects,
Division of Hydropower Licensing, 888 First Street, NE., Washington, DC
20426
[May 2011]
Table of Contents
List of Figures
List of Tables
Acronyms and Abbreviations
Executive Summary
1.0 Introduction
1.1 Application
1.2 Purpose of Action and Need for Power
1.2.1 Purpose of Action
1.2.2 Need for Power
1.3 Statutory and Regulatory Requirements
1.3.1 Federal Power Act
1.3.1.1 Section 18 Fishway Prescriptions
1.3.1.2 Section 4(e) Conditions
1.3.1.3 Section 10(j) Recommendations
1.3.2 Clean Water Act
1.3.3 Endangered Species Act
1.3.4 Coastal Zone Management Act
1.3.5 National Historic Preservation Act
1.3.6 Pacific Northwest Power Planning and Conservation Act
1.3.7 Magnuson-Stevens Fishery Conservation and Management Act
1.4 Public Review and Consultation
1.4.1 Scoping
1.4.2 Interventions
1.4.3 Comments on the License Application
2.0 Proposed Action and Alternatives
2.1 No-Action Alternative
2.2 Applicant's Proposal
2.2.1 Proposed Project Facilities
2.2.2 Project Safety
2.2.3 Proposed Project Operation
2.2.4 Proposed Environmental Measures
2.2.5 Modifications to Applicant's Proposal--Mandatory
Conditions
2.3 Staff Alternative
2.4 Staff Alternative With Mandatory Conditions
2.5 Removal of Existing Hydroelectric Facilities Including Enloe Dam
3.0 Environmental Analysis
3.1 General Description of the River Basin
3.2 Scope of Cumulative Effects Analysis
[[Page 28507]]
3.2.1 Geographic Scope
3.2.2 Temporal Scope
3.3 Proposed Action and Action Alternatives
3.3.1 Geologic and Soil Resources
3.3.1.1 Affected Environment
3.3.1.2 Environmental Effects
3.3.2 Water Quantity and Quality
3.3.2.1 Affected Environment
3.3.2.2 Environmental Effects
3.3.2.3 Cumulative Effects
3.3.3 Aquatic Resources
3.3.3.1 Affected Environment
3.3.3.2 Environmental Effects
3.3.3.3 Cumulative Effects
3.3.4 Terrestrial Resources
3.3.4.1 Affected Environment
3.3.4.2 Environmental Effects
3.3.5 Threatened and Endangered Species
3.3.5.1 Affected Environment
3.3.5.2 Environmental Effects
3.3.6 Recreation and Land Use
3.3.6.1 Affected Environment
3.3.6.2 Environmental Effects
3.3.7 Aesthetic Resources
3.3.7.1 Affected Environment
3.3.7.2 Environmental Effects
3.3.8 Cultural Resources
3.3.8.1 Affected Environment
3.3.8.2 Environmental Effects
3.3.9 Socioeconomics
3.3.9.1 Affected Environment
3.3.9.2 Environmental Effects
3.4 No-Action Alternative
4.0 Developmental Analysis
4.1 Power and Economic Benefits of the Project
4.2 Comparison of Alternatives
4.2.1 No-Action Alternative
4.2.2 Okanogan PUD's Proposal
4.2.3 Staff Alternative
4.3 Cost of Environmental Measures
5.0 Conclusions and Recommendations
5.1 Comparison of Alternatives
5.2 Comprehensive Development and Recommended Alternative
5.3 Unavoidable Adverse Effects
5.4 Fish and Wildlife Agency Recommendations
5.5 Consistency With Comprehensive Plans
6.0 Finding of No Significant Impact
7.0 Literature Cited
8.0 List of Preparers
List of Figures
Figure 1. Location of the Enloe Hydroelectric Project
Figure 2. Daily maximum temperatures at the 2006 monitoring locations
Figure 3. 7-DADMax temperatures in the lower end of the Enloe reservoir
(RM 9.1) and at the upper end of the reservoir (RM 10.3)
Figure 4. Plunge pool below Similkameen Falls
Figure 5. Recreation facilities in the Enloe Project area
Figure 6. Land ownership in the Enloe Project area
Figure 7. Roads, gates, and spurs in the project area
Figure 8. Location of proposed fencing downstream of Enloe dam
Figure 9. Enloe Project recreation site schematic
Figure 10. Enloe Project area KOPs
Figure 11. KOP 1, Loomis-Oroville Road
Figure 12. KOP 2, overlook from Loomis-Oroville Road approximately 3
miles north of Oroville
Figure 13. KOP 3, rocks below Enloe dam on the Similkameen River
Figure 14. KOP 4, overlook near Enloe dam
Figure 15. KOP 5, overlook east of Enloe dam, looking south
Figure 16. KOP 6, view from proposed interpretive panel 1,
looking north
Figure 17. KOP 7, view from interpretive panel 2, looking north
List of Tables
Table 1. Major Statutory and Regulatory Requirements for the Enloe
Hydroelectric Project
Table 2. Summary of Similkameen River Flows at the USGS Nighthawk Gage
No. 12442500, 1929-2005
[[Page 28508]]
Table 3. Similkameen River Water Rights
Table 4. Enloe Reservoir Characteristics at Existing and Proposed
Operations and Spills
Table 5. Summary of Total Dissolved Gas Measurements Near Enloe Dam From
May 26-30, 2006
Table 6. Summary of Preliminary Enloe Dam Sediment Trace Metals Results
Table 7. Summary of Preliminary Enloe Dam Sediment Elutriate Results
Table 8. Simulated Average Annual Tailrace Flow for Three Normal and
Three Wet Water Years
Table 9. Native and Non-Native Fishes in the Similkameen River Based on
Snorkel Surveys
Table 10. Numbers and Percent Composition of Native and Non-Native
Fishes in the River Downstream of Enloe Dam Based on Snorkel Surveys
Table 11. Numbers and Percent Composition of Native and Non-Native
Fishes in the Reservoir Upstream of Enloe Dam
Table 12. Aquatic Benthic Macroinvertebrate Taxa Found in the
Similkameen River above Enloe Reservoir
Table 13. Proposed Ramping Rates
Table 14. Estimate of User Days by Month for the Project Area
Table 15. Estimate of User Days by Type of Day for the Project Area
Table 17. Land Ownership Within the Proposed Enloe Project Boundary
Table 18. Archaeological and Historic Resources Within or Directly
Adjacent to the Enloe Project Boundary APE
Table 19. Population Characteristics of the City of Oroville, Okanogan
County, and Washington
Table 20. Parameters for the Economic Analysis of the Enloe
Hydroelectric Project
Table 21. Summary of Annual Cost of Alternative Power and Annual Project
Cost for the Alternatives for the Enloe Hydroelectric Project
Table 22. Cost of Environmental Mitigation and Enhancement Measures
Considered in Assessing the Environmental Effects of Constructing and
Operating the Proposed Enloe Hydroelectric Project
Table 23. Summary of Key Differences in the Potential Effects of
Okanogan PUD's Proposal and the Staff Alternative
Table 24. Fish and Wildlife Agency Recommendations for the Enloe
Hydroelectric Project
Acronyms and Abbreviations
[micro]g microgram
AHS Archaeological and Historical Services
APE area of potential effect
BLM U.S. Bureau of Land Management
BMP best management practice
[deg]C degrees Celsius
cfs cubic feet per second
Colville Confederated Tribes of the Colville Reservation
Commission Federal Energy Regulatory Commission
CSMP Construction Sediment Management Program
Corps U.S. Army Corps of Engineers
CRITFC Columbia River Inter-tribal Fish Commission
CRWG Cultural Resources Working Group
CWA Clean Water Act
dB decibel
DO dissolved oxygen
EA environmental assessment
EFH essential fish habitat
Enloe Project or project Enloe Hydroelectric Project
ESCP Erosion and Sediment Control Plan
ESA Endangered Species Act
FERC Federal Energy Regulatory Commission
FPA Federal Power Act
FTE full-time equivalent
FWS U.S. Department of the Interior, Fish and Wildlife Service
g the acceleration due to gravity (32.2 feet per second\2\)
GWh gigawatt-hour
HAER Historic American Engineering Record
HPMP Historic Properties Management Plan
Interior U.S. Department of the Interior
kg kilogram
kV kilovolt
KOP key observation point
L liter
mg milligram
mm millimeter
Ministry of Environment British Columbia Ministry of Environment
msl mean sea level
MW megawatt
MWh megawatt-hour
National Register National Register of Historic Places
NERC North American Electric Reliability Council
NHPA National Historic Preservation Act of 1966
NMFS National Marine Fisheries Service
Okanogan PUD Public Utility District No. 1 of Okanogan County
Okanogan Shoreline Program Okanogan County's Shoreline Master
Program
OTID Oroville-Tonasket Irrigation District
PA Programmatic Agreement
Park Service National Park Service
Reclamation U.S. Bureau of Reclamation
RM river mile
SCORP State Comprehensive Outdoor Recreation Plan
SD1 Scoping Document 1
SD2 Scoping Document 2
Scenic Trail Pacific Northwest National Scenic Trail
State Parks Commission Washington State Parks and Recreation
Commission
TCP traditional cultural property
TDG total dissolved gas
TMDL total maximum daily load
UCR Upper Columbia River
USGS U.S. Geological Survey
Vegetation Plan Vegetation Mitigation and Monitoring Plan
Washington DFW Washington Department of Fish and Wildlife
Washington DNR Washington Department of Natural Resources
Washington DOE Washington Department of Ecology
Washington PC Washington Parks Commission
Washington RCO Washington Recreation and Conservation Office
Washington SHPO State Historic Preservation Office
Water Trail Committee Greater Columbia Water Trail Steering
Committee
WSMA Washington State's Shoreline Management Act of 1971
Executive Summary
Proposed Action
On August 22, 2008, the Public Utility District No. 1 of Okanogan
County, Washington (Okanogan PUD) filed an application seeking a
license with the Federal Energy Regulatory Commission (Commission or
FERC) for the proposed 9.0-megawatt (MW) Enloe Hydroelectric Project
(Enloe Project or project) to be located on the Similkameen River near
Oroville in Okanogan County, Washington. The project would occupy 35.47
acres of federal lands administered by U.S. Bureau of Land Management
(BLM).
Project Description and Proposed Facilities
The Enloe dam and development was originally constructed for
hydroelectric generation between 1919 and 1923. The project operated
from 1923 to 1958 when it was decommissioned. The original project
included an intake, penstock, and powerhouse located 850 feet
downstream of the dam on the west bank of the Similkameen River. On
September 13, 1996, the Commission issued an order to Okanogan PUD to
redevelop the Enloe Project using the existing dam and rehabilitating
the original intake, penstock, and powerhouse. However, on February 23,
2000, that order was rescinded.
Okanogan PUD proposes again to redevelop the Enloe Project by using
the existing concrete gravity arch dam impounding a 76.6-acre
reservoir, and constructing a new penstock intake structure and above-
ground steel penstocks carrying flows from the intake to the new
powerhouse located 370 feet downstream of the dam on the east bank of
the Similkameen River. The existing
[[Page 28509]]
dam crest elevation of 1,044.3 feet would be increased by installing
new 5-foot-high crest gates which would increase the reservoir to
1,049.3 feet elevation and the surface area to 88.3 acres. The
powerhouse would contain two vertical Kaplan turbine/generator units
with a total installed capacity of 9.0 MW. The project would also
include a substation adjacent to the powerhouse, and a 100-foot-long,
13.2-kilovolt primary transmission line connecting the substation to an
existing distribution line. The project would also include about 1.5
miles of new and upgraded access roads. The Enloe Project would operate
automatically in a run-of-river mode, with a normal operating water
level of the reservoir between 1,048.3 and 1,049.3 feet mean sea level.
Proposed Environmental Measures
Okanogan PUD proposes the following environmental measures to
protect, mitigate, and enhance water quality, aquatic, terrestrial,
recreation, aesthetic, and cultural resources during construction and
operation of the project.
During construction:
Implement a Construction Sediment Management Program
(CSMP), an Erosion and Sediment Control Plan (ESCP), and a Spill Plan;
Implement a Blasting Plan;
Employ best management practices (BMPs) including flagging
and fencing wetland areas;
Provide biological monitoring;
Implement a Noxious Weed Control Program;
Survey disposal sites and control noxious weeds prior to
spoil disposal;
Revegetate spoil disposal sites;
Schedule construction activities in the summer and early
fall to minimize effects on overwintering birds and bald eagles;
Conduct pre-disposal site surveys for wildlife and
schedule vegetation clearing to avoid wildlife conflicts;
Survey for Ute ladies-tresses prior to, during, and
postconstruction to identify locations and avoid effects;
Monitor and avoid known archaeological sites listed in the
National Register of Historic Places (National Register) during
construction of project facilities; and
Develop and implement a Safety During Construction Plan
and limit public access.
During project operation:
For water quality:
[cir] Design and place the intake structure and channel to minimize
sediment transport;
[cir] Place the powerhouse tailrace below Similkameen Falls so that
it discharges to and circulates water in the plunge pool downstream of
the falls, preventing stagnation and consequently water quality
degradation of the pool habitat;
[cir] Provide aeration in the powerhouse draft tubes to maintain
dissolved oxygen (DO) levels; and
[cir] Monitor water quality, including water temperatures, DO, and
total dissolved gases (TDG) in the tailrace for a five-year period.
For aquatic resources:
[cir] Ensure that logs and woody debris can pass over the dam and
transporting large debris off-site if needed;
[cir] Place two clusters of boulders in the Similkameen River
upstream of the reservoir to improve mountain whitefish habitat and
recreational fisheries;
[cir] Include trashracks with 1-inch bar spacing on the project
intake(s) so that smaller fish would be able to pass safely through the
trashrack and larger fish would be discouraged or prevented from
passing through the trashracks and turbines;
[cir] Design and place the tailrace to avoid effects on fish;
[cir] Install and monitor entrainment and mortality of fish at the
tailrace barrier nets;
[cir] Operate run-of-river and implementing agency-recommended
ramping rates downstream of the project during project start-up and
shut-down;
[cir] Improve spawning, rearing, and summer thermal refugia
downstream of the powerhouse tailrace in an existing side channel;
[cir] Supplement gravel in the river reach downstream of the
tailrace to increase the amount of gravel in the river downstream of
Enloe dam and improve spawning habitat;
[cir] Develop and implement a biological review process including
the establishment of a Technical Review Group (TRG) comprising agencies
and the Confederated Tribes of the Colville Reservation (Colville); and
[cir] Develop a fish monitoring database for organizing and storing
monitoring data related to aquatic resources for all proposed studies.
For terrestrial resources, design the project transmission
line to minimize effects on raptors and other birds and implement a
Vegetation Plan that includes:
[cir] Returning the abandoned shoreline road to natural conditions;
[cir] Planting riparian vegetation along the abandoned road and
along and upstream of the east and west banks of the reservoir;
[cir] Installing grazing control measures;
[cir] Monitoring restored areas and planting additional willows if
needed; and
[cir] Developing an environmental training program to inform
employees about sensitive habitats.
For recreation resources, implement a Recreation
Management Plan that includes:
[cir] Installing barricades, fencing, and a stock watering tank as
part of the Fence Plan;
[cir] Providing public access downstream of Enloe dam on the east
bank;
[cir] Transferring ownership rights of the trestle bridge to
Okanogan County for the development of a future public, non-motorized,
recreational use trail;
[cir] Improving the existing informal boat ramp upstream of Enloe
dam;
[cir] Restoring the wooded area on the east bank and conducting
annual cleanup activities of the wooded area and along the Ditch Road;
[cir] Developing an interpretive publication, including a map
illustrating public access and recreation sites;
[cir] Developing interpretive displays by placing an information
board near Enloe dam; and interpretive signage near the parking, picnic
area, and near the access bridge to the abandoned powerhouse;
[cir] Removing existing trash and conducting annual cleanup;
[cir] Providing parking, picnic tables, primitive campsites, and a
vault toilet on the east bank upstream of Enloe dam;
[cir] Maintaining existing signage, safety cables, and grab ropes
upstream of the dam;
[cir] Installing safety and warning signs and a log boom across the
channel to protect boaters; and
[cir] Coordinating with BLM and other landowners on how to prevent
public access to the old powerhouse.
For aesthetic resources, implement an Aesthetics
Management Plan that includes:
[cir] Using visually-compatible colors and building materials for
facilities along the east bank;
[cir] Consulting with the Colville and other stakeholders regarding
restoration;
[cir] Using non-reflective surfaces where possible during
construction; and
[cir] Grading and repairing slopes with native plants following
removal of buildings.
For cultural resources, finalize a draft May 2009 Historic
Properties Management Plan (HPMP) that includes:
[cir] Soliciting for a new owner of the historic Enloe powerhouse,
and failing that, demolishing the structure and providing interpretive
signage using visually-compatible colors and building materials for
facilities along the east bank;
[cir] Reviewing and reaching agreement on the HPMP and
incorporating
[[Page 28510]]
information into a Programmatic Agreement (PA);
[cir] Monitoring effects of shoreline fluctuation on archaeological
sites in shoreline areas and mitigating, as needed;
[cir] Determining if there would be effects on archaeological sites
around project recreation areas; and
[cir] Developing an inadvertent discovery plan.
On October 28, 2010, Okanogan PUD filed additional information
regarding ongoing consultations with Washington Department of Ecology
(Washington DOE) and Washington Department of Fish and Wildlife
(Washington DFW) for the 401 Water Quality Certification process. In
this filing, Okanogan and Washington DFW and DOE have developed the
following understanding with regards to the bypassed reach:
Providing 30 cubic feet per second (cfs) minimum flows
from mid-July to mid-September, and 10 cfs rest of the year to the pool
in the bypassed reach;
Monitoring DO and water temperature in the bypassed reach;
Initiating an adaptive management program to enhance DO
and monitor water temperature in the bypassed reach if water quality
standards are not met;
Providing downramping rates in the bypassed reach; and
Determining means and withdrawal location for minimum
flows released to the bypassed reach.
Alternatives Considered
This draft environmental assessment (EA) considers the following
alternatives: (1) No-action--the project would not be constructed and
there would be no changes or enhancements at the site; (2) Okanogan
PUD's proposal--as outlined above; and (3) a staff alternative--
Okanogan PUD's proposal with staff's additions and modifications.
Under the staff alternative, the project would include Okanogan
PUD's proposed measures, as outlined above, with the exception of
placing boulder clusters in the project forebay and entrainment and
resident fish monitoring. In addition, the staff alternative would
include: (1) A Spoil Disposal Plan; (2) a water quality monitoring plan
that includes: Selecting water quality monitoring locations, filing of
reports at the end of year 5, and conducting additional temperature,
DO, and TGD monitoring beyond the 5-year period, if needed; (3)
consultation with the TRG prior to implementation of the Blasting Plan,
the woody debris plan, the proposed side-channel enhancement plan, the
proposed gravel supplementation program, and the Spill Plan; (4)
consultation with Interior and Washington DFW during final design of
the intake structure and trashracks; (5) a project compliance
monitoring plan; (6) revision of the Vegetation Plan to include filing
monitoring reports annually for first 5 years and in year 8 and
providing the Commission, FWS, BLM, and Washington DFW with these
reports and filing for Commission approval, any proposals for further
restoration measures; (7) incorporation of the land occupied by the
side-channel enhancement and length of the project access road from the
Loomis-Oroville Road to the powerhouse into the project boundary; (8)
retention of dead trees along the reservoir and provisions for 10
artificial perch poles; (9) preparation of an Ute ladies'-tresses
survey plan after consultation with FWS, BLM, and Washington DFW and an
additional plan to avoid or minimize adverse effects on the Ute
ladies'-tresses if they are identified in the project areas; (10)
consultation with stakeholders on the final Recreation Management Plan;
(11) a plowing schedule for winter months; (12) a recreation use
monitoring plan developed in consultation with BLM; (13) a fire
suppression program; (14) removal of the one small, deteriorated
building on Okanogan PUD land at the north end of the proposed Enloe
dam recreation area; (15) consultation with BLM and local emergency
response agencies on the Safety During Construction Plan; (16) creation
of a river access point at Miner's Flat; (17) consultation with BLM and
the Colville to develop details on how the facilities and laydown or
construction areas would blend into the existing landscape; and (18) a
revised HPMP to include provisions for: Further consideration of the
potential effects of capping site 45OK532, a description of the
proposed side-channel enhancement site, two separate defined APEs that
delineate the proposed Enloe project and the proposed side-channel
enhancement site, consultation with the Cultural Resources Working
Group regarding the resolution of adverse effects on the historic Enloe
powerhouse, re-evaluating the Oroville-Tonasket Irrigation Canal for
National Register-eligibility, completing determinations of eligibility
for unidentified cultural resources on BLM lands, periodic review of
the HPMP, a site monitoring program, cultural interpretative and
education measures, and revising the APEs to accommodate modifications
to the project boundary.
Public Involvement and Areas of Concern
Before filing its license application, Okanogan PUD conducted pre-
filing consultation under the traditional licensing process. The intent
of the Commission's pre-filing process is to initiate public
involvement early in the project planning process and encourage
citizens, governmental entities, tribes, and other interested parties
to identify and resolve issues prior to an application being formally
filed with the Commission.
After the license application was filed, we conducted scoping to
determine what issues and alternatives should be addressed. On December
16, 2008, we distributed Scoping Document 1 (SD1) to interested
parties, soliciting comments, recommendations, and information on the
project. An environmental site review of the project was held on
January 15, 2009. Two scoping meetings were held in Oroville,
Washington, on January 14 and 15, 2009, to receive oral comments on the
project. Based on discussions during the environmental site review and
scoping meetings and written comments filed with the Commission, we
issued a revised scoping document (SD2) on May 7, 2009. On December 28,
2009, we issued a notice that the application was ready for
environmental analysis and requested conditions and recommendations.
The primary issues associated with licensing the project are the
effects of project construction and operation on geology and soils;
water quality; aquatic, terrestrial, and cultural resources; threatened
and endangered species; and recreation, land use, and aesthetic
resources.
Staff Alternative
Aquatic Resources
Measures proposed in the ESCP, CSMP, Spill Plan, Blasting Plan, and
Safety During Construction Plan would help prevent adverse effects from
erosion and sedimentation that may result from construction and
operation of the project, and would help prevent adverse effects on
geology and soils and water quality.
Run-of-river operation would minimize effects on aquatic resources.
Locating the tailrace downstream of Similkameen Falls would reduce TDG
and enhance conditions for aquatic resources in the Similkameen
downstream of the falls. In addition, designing the tailrace in a
manner to provide circulation in the pool and aerating the draft tubes
would ensure
[[Page 28511]]
adequate DO for aquatic resources downstream of Similkameen Falls.
Providing minimum flows in the bypassed reach would provide some
refuge for resident fish in the plunge pool downstream of Enloe dam.
The 1-inch trash rack spacing on the intake trashrack, and installation
and monitoring of a tailrace net barrier would minimize adverse affects
on aquatic resources.
The construction of the side channel, gravel enhancement, riparian
planting projects, and improved water quality due to reductions in TDG
and enhanced DO levels are expected to have long-term benefits for
holding, spawning, and rearing fish, particularly anadromous salmonids,
and should increase anadromous salmonid productivity in the Similkameen
River downstream of the project.
Terrestrial Resources
Measures in the Vegetation Plan, including grazing controls,
noxious weed control, vegetation monitoring, employing BMPs, providing
biological monitor during construction, retaining dead trees and
installing artificial perch poles for bald eagle perching habitat, and
employee training would prevent adverse effects on riparian and wetland
areas which provide habitat for wildlife, as well as mitigate for
adverse effects during construction of the project.
Threatened and Endangered Species
The Similkameen River below Similkameen Falls is designated
critical habitat for the threatened UCR steelhead, the only fish
species known to occur in project affected waters that is listed under
the Endangered Species Act (ESA). Proposed measures to reduce TDG,
increase DO through draft tube aeration, supplement spawning gravel,
transport large woody debris, and construct the side-channel
enhancements would improve spawning and rearing habitat in the river
downstream of the falls and increase productivity. The biological
review process, fisheries monitoring, and ongoing refinement would
provide long-term benefits for UCR steelhead and UCR steelhead
designated critical habitat.
Additional surveys for the threatened Ute ladies'-tresses prior to,
during, and postconstruction would either confirm that the species does
not occur in areas affected by the project or guide the development of
avoidance or mitigative measures. The survey results and filing, with
the Commission for approval, proposed measures to avoid or mitigate
impacts to listed species; implementation of the Vegetation Plan,
including noxious weed control, employing BMPs during construction,
employee training, and provision of a biological monitor during
construction would protect potential Ute ladies'-tresses habitat in
areas affected by the project and at the proposed side channel
enhancement site.
Recreation and Land Use
Implementation of the Recreation Management Plan would improve
existing recreational facilities and opportunities. The Safety During
Construction Plan, as well as the Fence Plan, would help keep visitors
to the project away from the construction activities and reduce user
conflicts between recreationists and cattle grazing activities.
Inclusion of the entire Oroville-Tonasket Irrigation District Ditch
Road as a project feature and bringing it into the project boundary
would ensure maintenance of the entire road for the purpose of
providing public access to the campground, boat launch, picnic areas,
and access trail to the river below the dam.
Aesthetic Resources
Okanogan PUD's proposal to use visually-compatible colors and
building materials, use non-reflective surfaces where possible, and
consult with the Colville during restoration activities, would provide
some protection for visual resources. The staff alternative with
additional recommendations including coordination with stakeholders to
include specific approaches for blending existing and proposed Enloe
Project facilities into the existing landscape character; revegetating,
stabilizing, and landscaping the new construction areas and areas
immediately adjacent; grading, planting native vegetation, repairing
slopes damaged by erosion, and preventing future erosion; monitoring
restored areas; and conducting maintenance activities would provide
additional protection.
Cultural Resources
Revising and implementing the May 2009 HPMP, with staff's
additional measures, would ensure protection of historic properties
over the license term.
No-Action Alternative
Under the no-action alternative, environmental conditions would
remain the same, and no enhancement of environmental resources would
occur. BLM stated that it would require Okanogan PUD to remove the dam
and all associated facilities from the public lands under the existing
right-of-way permit if a license is be issued. We discussed dam removal
under cumulative effects in section 3.5.
Conclusions
Based on our analysis, we recommend licensing the project as
proposed by Okanogan PUD with some staff modifications and additional
measures.
In section 4.2 of the EA, we estimate the likely cost of
alternative power for each of the alternatives identified above. Our
analysis shows that during the first year of operation under Okanogan
PUD's proposed alternative, the project would cost $106,470, or $2.40/
megawatt-hours (MWh), less than the likely alternative cost of power.
Under the staff alternative, the project power would cost $83,920, or
$1.89/MWh, less than the likely cost of alternative power.
We chose the staff alternative as the preferred alternative
because: (1) The project would provide a dependable source of
electrical energy for the region (44.4 gigawatt-hours annually); (2)
the project could save an equivalent amount of fossil fuel-fired
electric generation and capacity, which may help conserve non-renewable
energy resources and reduce atmospheric pollution, including
greenhouses gases; and (3) the recommended environmental resources
proposed by Okanogan PUD, as modified by staff, would adequately
protect and enhance environmental resources affected by the project.
The overall benefits of the staff alternative would be worth the cost
of proposed and recommended environmental measures.
We conclude that issuing a new license for the project, with the
environmental measures we recommend, would not be a major federal
action significantly affecting the quality of the human environment.
Draft Environmental Assessment
Federal Energy Regulatory Commission, Office of Energy Projects,
Division of Hydropower Licensing, Washington, DC
Enloe Hydroelectric Project
Project No. 12569-001--Washington
1.0 Introduction
1.1 Application
On August 22, 2008, the Public Utility District No. 1 of Okanogan
County, Washington (Okanogan PUD) filed an application seeking a
license with the Federal Energy Regulatory Commission (Commission or
FERC) for the 9.0-megawatt (MW) Enloe Hydroelectric Project (Enloe
Project or project) located on the Similkameen River at river mile (RM)
8.8 near the city of Oroville, Okanogan County, Washington (figure
[[Page 28512]]
1). The project would occupy 35.47 acres of federal lands administered
by U.S. Bureau of Land Management (BLM). The project would generate an
average of 45 gigawatt-hours (GWh) of energy annually.
Enloe dam was originally constructed for hydroelectric generation
between 1919 and 1923. The project operated from 1923 to 1958 when it
was decommissioned. The original project included an intake, penstock,
and powerhouse located 850 feet downstream of the dam on the west bank
of the Similkameen River. On September 13, 1996, the Commission issued
an order to Okanogan PUD to redevelop the Enloe Project using the
existing dam and rehabilitating the original intake, penstock, and
powerhouse. However, on February 23, 2000, that order was rescinded.
Okanogan PUD proposes to again redevelop the Enloe Project by using
the existing concrete gravity arch dam impounding a 76.6-acre
reservoir; and constructing new penstock intake structure, and above-
ground steel penstocks carrying flows from the intake to the new
powerhouse located 370 feet downstream of the dam on the east bank of
the Similkameen River.
1.2 Purpose of Action and Need for Power
1.2.1 Purpose of Action
The Commission must decide whether to issue a license to Okanogan
PUD for the Enloe Project and what conditions should be placed on any
license issued. In deciding whether to issue a license for a
hydroelectric project, the Commission must determine that the project
will be best adapted to a comprehensive plan for improving or
developing a waterway. In addition to the power and developmental
purposes for which licenses are issued (such as flood control,
irrigation, or water supply), the Commission must give equal
consideration to the purposes of (1) energy conservation; (2) the
protection of, mitigation of damage to, and enhancement of fish and
wildlife resources; (3) the protection of recreational opportunities;
and (4) the preservation of other aspects of environmental quality.
BILLING CODE 6717-01-P
[[Page 28513]]
[GRAPHIC] [TIFF OMITTED] TN17MY11.000
BILLING CODE 6717-01-C
Issuing a license for the Enloe Project would allow the Okanogan
PUD to generate electricity for the term of the license, making
electrical power from a renewable resource available to its customers.
This draft environmental assessment (EA) assesses the effects
associated with construction and operation of the project and
alternatives to the proposed project. It also includes recommendations
to the Commission on whether to issue a license, and if so, includes
the recommended terms and
[[Page 28514]]
conditions to become a part of any license issued.
In this draft EA, we assess the environmental and economic effects
of construction and operation of the project as proposed by Okanogan
PUD, and with our recommended measures. We also consider the effects of
the no-action alternative. Important issues that are addressed include
the protection of geology and soils, water quantity and quality,
cultural resources, aesthetics resources, and recreation and land use
during project construction and operation.
1.2.2 Need for Power
The Enloe Project would provide hydroelectric generation to meet
part of Okanogan PUD's power requirements, resource diversity, and
capacity needs. The project would have an installed capacity of 9.0 MW
and generate approximately 44.4 GWh per year.
The North American Electric Reliability Council (NERC) annually
forecasts electrical supply and demand nationally and regionally for a
10-year period. The Enloe Project is located in the Northwest subregion
of the Western Electricity Coordinating Council region of the NERC.
According to NERC's 2010 forecast, winter peak demands and annual
energy requirements for the Northwest subregion are projected to grow
at rates of 1.1 percent and 1.2 percent, respectively, from 2010
through 2019 (NERC, 2010). NERC projects resource capacity margins
(generating capacity in excess of demand) will remain above the target
reserve margins of 18.6 percent for summer and 20.0 percent for winter
throughout the 2010-2019 period. Over the next 10 years, WECC estimates
that about 6,285 MW of additional capacity will be brought on line.
We conclude that power from the Enloe Project would help meet a
need for power in the Northwest subregion in both the short and long
term. The project would provide power that displaces non-renewable,
fossil-fired generation and contributes to a diversified generation
mix. Displacing the operation of fossil-fueled facilities may avoid
some power plant emissions and creates an environmental benefit.
1.3 Statutory and Regulatory Requirements
A license for the Enloe Project would be subject to numerous
requirements under the Federal Power Act (FPA) and other applicable
statutes. We summarize the major regulatory requirements in table 1 and
describe them below.
Table 1--Major Statutory and Regulatory Requirements for the Enloe
Hydroelectric Project
[Source: Staff]
------------------------------------------------------------------------
Requirement Agency Status
------------------------------------------------------------------------
Section 18 of the FPA (fishway NMFS, FWS........ NMFS and FWS filed
prescriptions). reservations of
authority on
February 26, 2010.
Section 4(e) of the FPA (land Interior......... No section 4(e)
management conditions). conditions have been
filed.
Section 10(j) of the FPA...... Washington DFW, Washington DFW, FWS,
FWS, NMFS. and NMFS all filed
section 10(j)
recommendations on
February 26, 2010.
Clean Water Act--Water Quality Washington DOE... Application for
Certification. certification was
received on February
25, 2011; action on
the application due
by February 25,
2012.
Endangered Species Act NMFS, FWS........ Commission staff is
Consultation. initiating formal
consultation with
both agencies.
Coastal Zone Management Act Washington DOE... By letter dated
Consistency. September 25, 2009,
Washington DOE
waived its
requirement for
compliance with its
Coastal Zone
Management Program
for the project.
National Historic Preservation Advisory Council The Commission
Act. on Historic designated Okanogan
Preservation; PUD as a non-federal
Washington representative for
Department of conducting section
Archaeology and 106 consultation on
Historic September 26, 2005.
Preservation. Okanogan PUD filed a
Historic Properties
Management Plan on
June 16, 2009.
Pacific Northwest Power ................. The project is not
Planning and Conservation Act. located within the
designated protected
area of the Columbia
River Basin and
would be in
compliance with
specific provisions
to be considered in
the licensing or
relicensing of non-
federal hydropower
projects.
Magnuson-Stevens Fishery NMFS............. Licensing the project
Conservation and Management could adversely
Act. affect Chinook
salmon essential
fish habitat.
Commission staff is
initiating formal
consultation with
NMFS.
------------------------------------------------------------------------
Notes: 401 WQC--401 Water Quality Certificate
BLM--U.S. Bureau of Land Management
Commission--Federal Energy Regulatory Commission
FPA--Federal Power Act
FWS--U.S. Department of the Interior, Fish and Wildlife Service
Interior--U.S. Department of the Interior
NMFS--National Marine Fisheries Service
Okanogan PUD--Public Utility District No. 1 of Okanogan County
Washington DFW--Washington Department of Fish and Wildlife
Washington DOE--Washington Department of Ecology
1.3.1 Federal Power Act
1.3.1.1 Section 18 Fishway Prescriptions
Section 18 of the FPA states that the Commission is to require
construction, operation, and maintenance by a licensee of such fishways
as may be prescribed by the Secretaries of Commerce or the U.S.
Department of the Interior (Interior). The National Marine Fisheries
Service (NMFS) by letter dated February 26, 2010, and the U.S.
Department of the Interior, Fish and Wildlife Service (FWS) by letter
dated February 26, 2010, request that a reservation of authority to
prescribe fishways under section 18 be included in any license issued
for the project.
[[Page 28515]]
1.3.1.2 Section 4(e) Conditions
Section 4(e) of the FPA provides that any license issued by the
Commission for a project within a federal reservation shall be subject
to and contain such conditions as the Secretary of the responsible
federal land management agency deems necessary for the adequate
protection and use of the reservation. Interior, on behalf of the U.S.
Bureau of Land Management (BLM), filed recommended terms and conditions
by letter dated February 26, 2010, and did not prescribe any conditions
pursuant to section 4(e) of the FPA.
1.3.1.3 Section 10(j) Recommendations
Under section 10(j) of the FPA, each hydroelectric license issued
by the Commission must include conditions based on recommendations
provided by federal and state fish and wildlife agencies for the
protection, mitigation, or enhancement of fish and wildlife resources
affected by the project. The Commission is required to include these
conditions unless it determines that they are inconsistent with the
purposes and requirements of the FPA or other applicable law. Before
rejecting or modifying an agency recommendation, the Commission is
required to attempt to resolve any such inconsistency with the agency,
giving due weight to the recommendations, expertise, and statutory
responsibilities of such agency.
NMFS, FWS, and Washington Department of Fish and Wildlife
(Washington DFW) all timely filed, on February 26, 2010,
recommendations under section 10(j), as summarized in table 23, in
section 5.4, Recommendations of Fish and Wildlife Agencies. In section
5.4, we also discuss how we address the agency recommendations and
comply with section 10(j).
1.3.2 Clean Water Act
Under section 401 of the Clean Water Act (CWA), a license applicant
must obtain certification from the appropriate state pollution control
agency verifying compliance with the CWA. On February 24, 2010,
Okanogan PUD applied to the Washington Department of Ecology
(Washington DOE) for a 401 Water Quality Certificate (WQC) for the
Enloe Project. Washington DOE received this request on February 25,
2010. Washington DOE has not yet acted on the request. Washington DOE
action is due by February 25, 2011.
On October 28, 2010, Okanogan PUD filed a status report on its
negotiations with Washington DOE and Washington DFW regarding possible
conditions for the WQC for the Enloe Project, and on November 10, 2010,
it filed supplemental information regarding the basis for the potential
conditions. In this filing, measures for aquatic resources would
include:
A minimum flows of 30 cfs from mid-July to mid-September,
and 10 cfs rest of the year to the pool below Enloe dam.
Monitoring water temperature in the bypassed reach for a
period of time postconstruction; and adopting an adaptive management
program to enhance DO and water temperatures should monitoring indicate
that water quality standards are not being met.
Determining appropriate thresholds for downramping rates
immediately downstream of Enloe dam based on monitoring and field
observations prior to operations.
Selecting an appropriate minimum flow release location in
consultation with fisheries resource agencies (Washington DOE,
Washington DFW, Interior, NMFS, BLM, and the Colville), and making
appropriate project modifications to provide minimum flow releases.
1.3.3 Endangered Species Act
Section 7 of the Endangered Species Act (ESA) requires federal
agencies to ensure that their actions are not likely to jeopardize the
continued existence of endangered or threatened species or result in
the destruction or adverse modification of the critical habitat of such
species. NMFS notified the Commission in its February 26, 2010, filing
that one ESA-listed threatened species of anadromous fish is known to
occur in the Similkameen River below Enloe dam: The upper Columbia
River (UCR) steelhead distinct population segment. Designated critical
habitat includes the Similkameen River below Similkameen Falls (the
falls). There is no critical habitat designation upstream of
Similkameen Falls.
FWS lists five additional ESA-listed species of fish, wildlife, and
plants that occur in Okanogan County, Washington, including the bull
trout (threatened), Canada lynx (threatened), grizzly bear
(threatened), northern spotted owl (threatened), and Ute ladies'-
tresses (threatened). There is no designated critical habitat for any
of these species within the Enloe Project boundary. Our analyses of
project impacts on threatened and endangered species are presented in
section 3.3.5, Threatened and Endangered Species, and our
recommendations in section 5.2, Comprehensive Development and
Recommended Alternative.
We conclude that licensing the project would have no effect on bull
trout, Canada lynx, grizzly bear, and northern spotted owl.
We conclude that licensing the project would adversely affect
federally listed UCR steelhead because proposed project construction
and habitat enhancement projects could result in short-term increases
in turbidity and sedimentation and the risk of injury or mortality to
eggs, fry, juveniles, or adults by instream use of equipment.
Construction of the tailrace could result in injury or mortality to
eggs, fry, juveniles, or adults caused by capture and transport,
relocation, and blasting. UCR steelhead injury or mortality could
result from fish swimming into draft tubes and hitting the turbine
runner during project operation. We conclude, however, that the
proposed project would not appreciably diminish the value of designated
UCR steelhead critical habitat for both survival and recovery of this
species and the proposed enhancement measures would provide some long-
term beneficial effects. Consequently, we will request formal
consultation with NMFS pursuant to section 7 of the ESA.
Potential habitat for Ute ladies'-tresses exists along the
reservoir and in the side channel enhancement area. No populations of
this species were discovered during Okanogan PUD's rare plant surveys,
but there are agency concerns about the adequacy of the surveys. If Ute
ladies'-tresses grows in the habitat identified at the edge of the
reservoir, operation of the proposed crest gates would inundate the
population. If this species occurs at the side-channel enhancement
site, construction, operation, and maintenance of the proposed facility
could adversely affect the plants, but it may be possible to adjust the
facility's footprint so that the plants are not affected.
In response to agency recommendations for additional surveys,
Okanogan PUD proposes to survey areas that could potentially provide
habitat for Ute ladies'-tresses for an additional 3 years as part of
its proposed Vegetation Mitigation and Monitoring Plan (Vegetation
Plan). Thereafter, potential habitat for Ute ladies'-tresses would be
resurveyed only if site management changes occur that could affect that
habitat. Okanogan PUD's proposed surveys would either confirm that Ute
ladies'-tresses does not occur in areas that would be affected by the
project or would guide the development of avoidance or mitigative
measures for this species. Therefore, licensing the project with the
[[Page 28516]]
recommended protection, mitigation, and enhancement measures would not
be likely to adversely affect Ute ladies'-tresses.
1.3.4 Coastal Zone Management Act
Under section 307(c)(3)(A) of the Coastal Zone Management Act
(CZMA),\1\ the Commission cannot issue a license for a project within
or affecting a state's coastal zone unless the state CZMA agency
concurs with the license applicant's certification of consistency with
the state's CZMA program, or the agency's concurrence is conclusively
presumed by its failure to act within 180 days of its receipt of
Okanogan PUD's certification.
---------------------------------------------------------------------------
\1\ 16 U.S.C. 1456(c)(3)(A) (2006).
---------------------------------------------------------------------------
By letter dated September 25, 2009, the Washington DOE waived its
requirement for compliance with its Coastal Zone Management Program for
the project. Therefore, no consistency certification is required.
1.3.5 National Historic Preservation Act
Section 106 of the National Historic Preservation Act of 1966
(NHPA) \2\ and its implementing regulations,\3\ requires that every
federal agency ``take into account'' how each of its undertakings could
affect historic properties. Historic properties are districts, sites,
buildings, structures, traditional cultural properties, and objects
significant in American history, architecture, engineering, and culture
that are eligible for inclusion in the National Register of Historic
Places (National Register). To meet the requirements of section 106,
the Commission intends to execute a Programmatic Agreement (PA) for the
protection of historic properties from the effects of the construction,
operation, and maintenance of the Enloe Project. The terms of the PA
would ensure that Okanogan PUD addresses and treats all historic
properties identified within the project's areas of potential effects
(APEs) for the proposed project and the side-channel enhancement site
through implementation of a revised Historic Properties Management Plan
(HPMP).
---------------------------------------------------------------------------
\2\ 16 U.S.C. 470 et seq. (2006).
\3\ 36 CFR Part 800 (2009).
---------------------------------------------------------------------------
1.3.6 Pacific Northwest Power Planning and Conservation Act
Under section 4(h) of the Pacific Northwest Power Planning and
Conservation Act, the Northwest Power and Conservation Council
developed the Columbia River Basin Fish and Wildlife Program to
protect, mitigate, and enhance the operation of the hydroelectric
projects within the Columbia River Basin. Section 4(h) states that
responsible federal and state agencies should provide equitable
treatment for fish and wildlife resources, in addition to other
purposes for which hydropower is developed, and that these agencies
should take into account, to the fullest extent practicable, the
program adopted under the Pacific Northwest Power Planning and
Conservation Act.
The program directs agencies to consult with federal and state fish
and wildlife agencies, appropriate Indian tribes, and the Council
during the study, design, construction, and operation of any
hydroelectric development in the basin.
To mitigate harm to fish and wildlife resources, the Council has
adopted specific provisions to be considered in the licensing or
relicensing of non-federal hydropower projects (appendix B of the
Program). The specific provisions that apply to the proposed project
call for: (1) Specific plans for fish facilities prior to construction;
(2) assurance that the project would not degrade fish habitat or reduce
numbers of fish; (3) assurance all fish protection measures are fully
operational at the time the project begins operation; (4) timing
construction activities, insofar as practical, to reduce adverse
effects on wintering grounds; and (5) replacing vegetation if natural
vegetation is disturbed.
Our recommendations in this EA (sections 2.2 and 2.3) are
consistent with the applicable provisions of the program, listed above.
Further, a condition of any license issued would reserve the
Commission's authority to require future alterations in project
structures and operations to take into account, to the fullest extent
practicable, the applicable provisions of the program.
As part of the Program, the Council has designated more than 40,000
miles of river (protected area) in the Pacific Northwest region as not
being suitable for hydroelectric development. The project is not
located within a protected area.
1.3.7 Magnuson-Stevens Fishery Conservation and Management Act
The Magnuson-Stevens Fishery Conservation and Management Act
requires federal agencies to consult with NMFS on all actions that may
adversely affect essential fish habitat (EFH). The Pacific Fishery
Management Council manages the fisheries for coho, Chinook, and Puget
Sound pink salmon and has defined EFH for these three species. Salmon
EFH includes all those streams, lakes, ponds, wetlands, and other water
bodies currently or historically accessible to salmon in Washington,
except areas upstream of certain impassable human-made barriers
(Pacific Fisheries Management Council, 2010), and longstanding,
naturally impassable barriers (i.e., natural waterfalls in existence
for several hundred years). The historically accessible reaches of the
Similkameen River (RM 0 to the falls) are EFH for Chinook salmon.
Based on our analysis in this EA of the proposed action as
specified in the license application, we conclude that licensing the
project would be likely to adversely affect EFH for the UCR Chinook
salmon for the same reasons we conclude that licensing the project
would adversely affect the UCR steelhead and its designated critical
habitats (see section 1.3.3, Endangered Species Act). Consequently, we
will request that NMFS provide any EFH recommendation along with its
biological opinion regarding listed anadromous fish.
1.4 Public Review and Consultation
The Commission's regulations (18 CFR, section 4.38) require that
applicants consult with appropriate resource agencies, tribes, and
other entities before filing an application for a license. This
consultation is the first step in complying with the Fish and Wildlife
Coordination Act, ESA, NHPA, and other federal statutes. Pre-filing
consultation must be complete and documented according to the
Commission's regulations.
1.4.1 Scoping
Before preparing this EA, we conducted scoping to determine what
issues and alternatives should be addressed. Scoping Document 1 (SD1)
was issued on December 16, 2008. Two scoping meetings were noticed on
December 16, 2008, and held on January 14 and 15, 2009, in Oroville,
Washington. A court reporter recorded all comments and statements made
at the scoping meetings, and these are part of the Commission's public
record for the project. In addition to comments provided at the scoping
meetings, the following entities provided written comments:
[[Page 28517]]
------------------------------------------------------------------------
Commenting entity Date filed
------------------------------------------------------------------------
Washington DFW...................... February 6, 2009.
National Park Service (Park Service) February 9, 2009.
Richard Terbasket................... February 12, 2009.
FWS................................. February 13, 2009.
BLM................................. February 17, 2009.
Columbia River Inter-Tribal Fish February 17, 2009.
Commission (CRITFC).
NMFS................................ February 17, 2009.
Washington DOE...................... February 17, 2009.
U.S. Bureau of Indian Affairs (BIA). February 17, 2009.
U.S. Environmental Protection Agency February 17, 2009.
(EPA).
Lower Similkameen Indian Band....... February 20, 2009.
Confederated Tribes of the Colville February 23, 2009.
Reservation (Colville).
Arnold N. Merchand.................. February 23, 2009.
------------------------------------------------------------------------
A revised scoping document 2 (SD2), addressing these comments, was
issued on May 7, 2009.
1.4.2 Interventions
On October 29, 2008, the Commission issued a notice that Okanogan
PUD had filed an application for a license for the Enloe Project. This
notice set December 29, 2008, as the deadline for filing protests and
motions to intervene. In response to the notice, the following entities
filed motions to intervene, none in opposition:
---------------------------------------------------------------------------
\4\ Late intervention; no action has been taken on this
petition.
------------------------------------------------------------------------
Intervenor Date filed
------------------------------------------------------------------------
Greater Columbia Water Trail October 31, 2008.
Coalition (Water Trail Committee).
American Whitewater................. November 4, 2008.
Washington Department of Natural November 26, 2008.
Resources (Washington DNR).
Washington DFW...................... November 26, 2008.
American Rivers..................... December 8, 2008.
Washington DOE...................... December 11, 2008.
CRITFC.............................. December 29, 2008.
Interior............................ December 29, 2008.
NMFS................................ December 30, 2008.
Colville \4\........................ April 10, 2009.
------------------------------------------------------------------------
1.4.3 Comments on the License Application
A notice requesting conditions and recommendations was issued on
December 28, 2009. The following entities commented:
------------------------------------------------------------------------
Commenting agency and other entity Date filed
------------------------------------------------------------------------
British Columbia Ministry of February 18, 2010.
Environment (Ministry of
Environment).