San Luis Rio Colorado Project (DOE/EIS-0395), 58074-58078 [E7-20179]

Agencies

• DEPARTMENT OF ENERGY
• Western Area Power Administration

[Federal Register Volume 72, Number 197 (Friday, October 12, 2007)]
[Notices]
[Pages 58074-58078]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E7-20179]


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DEPARTMENT OF ENERGY

Western Area Power Administration


San Luis Rio Colorado Project (DOE/EIS-0395)

AGENCY: Western Area Power Administration, DOE.

ACTION: Notice of Record of Decision and Floodplain Statement of 
Findings.

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SUMMARY: The Department of Energy (DOE) received applications from 
North Branch Resources, LLC (NBR) and Generadora del Desierto, S.A. de 
C.V. (GDD) to construct the proposed San Luis Rio Colorado Project in 
Yuma County, Arizona. NBR and GDD (collectively termed the Applicants) 
are each wholly owned subsidiaries of North Branch Holding, LLC. GDD 
applied to Office of Electricity Delivery and Energy Reliability (OE), 
an organizational unit within DOE, for a Presidential permit to 
construct, connect, operate, and maintain a double-circuit 500,000-volt 
(500-kilovolt [kV]) electric transmission line across the United 
States-Mexico international border. NBR submitted a request to Western 
Area Power Administration (Western), another organizational unit within 
DOE, to interconnect the double-circuit 500-kV electric transmission 
line to Western's existing Gila Substation. The Applicants proposed 
that Western construct, own, operate, and maintain the transmission 
components within the United States at the Applicants' expense. 
Western's decision is to allow the Applicants to interconnect with its 
transmission system at Gila Substation, and to construct the Agency 
Preferred Alternative upon completion of Western's Large Generator 
Interconnection Procedures (LGIP) process. Accordingly, Western intends 
to enter into interconnection and construction agreements with NBR, and 
to construct, own, operate, and maintain the transmission system 
additions in the United States that would allow the interconnection.

FOR FURTHER INFORMATION CONTACT: Mr. John Holt, Environmental Manager, 
Desert Southwest Customer Service Region, Western Area Power 
Administration, P.O. Box 6457, Phoenix, AZ 85005, telephone (602) 605-
2592; e-mail holt@wapa.gov. Copies of the EIS are available from Mr. 
Holt. For information about the DOE National Environmental Policy Act 
(NEPA) process, contact Ms. Carol M. Borgstrom, Director, Office of 
NEPA Policy and Compliance, GC-20, U.S. Department of Energy, 1000 
Independence Avenue, SW., Washington, DC 20585, telephone (800) 472-
2756. For information on the Presidential permit process, contact Dr. 
Jerry Pell, Office of Electricity Delivery and Energy Reliability, OE-
20, U.S. Department of Energy, 1000 Independence Avenue, SW., 
Washington, DC 20585, telephone (202) 586-3362; e-mail 
jerry.pell@hq.doe.gov.

SUPPLEMENTARY INFORMATION: DOE received applications from NBR and GDD 
to construct the portions of the San Luis Rio Colorado Project located 
in Yuma County, Arizona. GDD applied to OE, an organizational unit 
within DOE, for a Presidential permit to construct, connect, operate, 
and maintain a double-circuit, 500-kV electric transmission line across 
the United States-Mexico international border. NBR submitted a request 
to Western, another organizational unit within DOE, to interconnect the 
double-circuit 500-kV electric transmission line to Western's existing 
Gila Substation. The Applicants propose that Western construct, own, 
operate, and maintain the transmission components within the United 
States at the Applicants' expense.
    Western and OE are the lead agencies for the San Luis Rio Colorado 
Environmental Impact Statement (EIS). The U.S. Department of the Navy 
(Navy), acting through the U.S. Marine Corps Air Station Yuma; U.S. 
Bureau of Land Management, (BLM); U.S. Bureau of Reclamation 
(Reclamation); and the City of Yuma are cooperating agencies. DOE's OE 
has authority over the connection of the electric transmission line at 
the United States-Mexico international border and will issue a separate 
Record of Decision (ROD) for that decision. Reclamation and the Navy 
will also make decisions regarding the

[[Page 58075]]

granting and use of rights-of-way (ROW) for the Proposed Project.

Alternatives Considered

Applicants' Proposed Action

    The Applicants proposed that within the United States, Western 
would construct, own, operate, and maintain double-circuit 500-kV 
transmission components at the Applicants' expense. The transmission 
components under their proposal would consist of a double-circuit 500-
kV transmission line between the Point of Change of Ownership near the 
international border and Western's existing Gila Substation; a 500/69-
kV addition adjacent to the Gila Substation; and a double-circuit 500-
kV transmission line between Gila Substation and Arizona Public 
Service's (APS') North Gila Substation. In addition, modifications 
would be made to APS' North Gila Substation based on an agreement 
between Western and APS and would remain under operational control of 
APS.
    The Applicants proposed a transmission corridor that would commence 
at the international border near the Point of Change of Ownership 
located immediately north of the proposed San Luis Rio Colorado (SLRC) 
Power Center near the intersection of Avenue 1E and County 27th, then 
turn northeast to the intersection of Avenue 4E and County 24th. From 
the intersection of Avenue 4E and County 24th, the proposed corridor 
would proceed north parallel to Avenue 4E, the western boundary of the 
Barry M. Goldwater Range (BMGR), Western's existing Gila-Sonora 
Transmission Line, and a portion of the Area Service Highway (ASH) to a 
point north of County 19th. North of County 19th, the proposed 
transmission line corridor would proceed northeast roughly parallel to 
the ASH corridor across the northwestern portion of the BMGR. At Avenue 
5\1/2\E, the proposed transmission line corridor would head north to 
the Yuma Mesa Irrigation and Drainage District's (YMIDDs) A Canal, then 
turn generally northeastward, parallel to the A Canal and Western's 69-
kV transmission line, cross Interstate 8, and enter the west side of 
Gila Substation expansion area located north of the existing Gila 
Substation. Leaving the north side of Gila Substation, the proposed 
corridor would parallel the two existing transmission lines to the 
north, span the Gila River, and then turn northwest and into Arizona 
APS' North Gila Substation, still parallel to the existing transmission 
lines.
    The Applicants' Proposed Action was not selected as the preferred 
alternative due to higher impacts on flat-tailed horned lizard habitat, 
increased engineering constraints, and increased impacts on residences 
as compared with the selected alternative.

Corridor Analysis

    During the EIS process, Western took a broad look at the project 
area to determine if other viable and reasonable alternatives could be 
developed. Three regional corridors (West, Center, and East) were 
identified. These corridors were defined by two ``no-go'' areas--the 
City of Yuma high-density commercial and residential area and the 
adjacent Marine Corps Air Station Yuma/Yuma International Airport, and 
the Auxiliary Airfield No. 2 landing strip and approach zones on the 
BMGR. These two areas were not considered viable areas for routing a 
main transmission line because of unacceptably high human and 
environmental conflicts. The two areas defined a West Corridor, roughly 
parallel to the Colorado River and western Arizona-Mexico border, a 
Center Corridor east of Yuma and the airport and along the western 
boundary of the BMGR, and an East Corridor across the BMGR east of 
Auxiliary Airfield No. 2 and west of the Gila Mountains.
    The West and East corridors were not found to be feasible. The West 
Corridor would result in a transmission line nearly twice as long as a 
Center Corridor option, with an attendant increase in environmental 
impacts based on length alone. The West Corridor would cross three 
times more irrigated cropland, impact a number of residences, and 
require two crossings of the Colorado River. Routing opportunities were 
severely constrained by residential and other development, including 
Yucca Powerplant and associated transmission lines, near the Colorado 
River west of the City of Yuma. Finally, the cost of constructing 
nearly twice as much transmission line, and of acquiring ROW, would 
make the Proposed Project economically infeasible.
    The East Corridor would also be considerably longer, with 
associated increases in environmental impacts, and would be 
economically infeasible. Any transmission line located in the East 
Corridor would be wholly incompatible with military operations on the 
BMGR, and obtaining a permit from the Navy to construct a transmission 
line in this area would not be possible.
    Western proceeded to develop alternatives to the Applicants' 
Proposed Action within the Center Corridor by identifying routing 
constraints and opportunities, balancing potential impacts, and 
considering public, stakeholder, and agency comments. A number of 
routing segments were developed and presented to the public for 
comment.

Route Alternative

    The Route Alternative was developed by combining the routing 
segments that best utilized line routing opportunities, minimized 
environmental impacts, and considered public and agency comments 
received. The transmission system components would be identical to 
those of the Applicants' Proposed Action, but the transmission route 
was adjusted in response to information developed in the EIS process, 
comments, and potential issues identified with the Applicants' Proposed 
Action.
    The Route Alternative would commence at the international border 
near the Point of Change of Ownership located immediately north of the 
proposed SLRC Power Center near the intersection of Avenue 1E and 
County 27th, the corridor would then turn northeast for approximately 
1.5 miles to the existing Gila-Sonora Transmission Line, located near 
the intersection of Avenue 2\1/2\E and County 26\1/2\. From this 
location, the corridor would proceed north adjacent to the east side of 
the existing improved well field access road and Western's Gila-Sonora 
69-kV transmission line toward the existing Sonora Substation. From 
Sonora Substation, the corridor would proceed northeast toward the 
intersection of Avenue 3E and County 23rd. From the intersection of 
Avenue 3E and County 23rd, the Route Alternative would proceed north 
adjacent to Avenue 3E to the intersection with County 19\1/4\. From the 
intersection of Avenue 3E and County 19\1/4\, the corridor would 
proceed northeast toward the intersection of Avenue 4E and County 18\3/
4\. From the intersection of Avenue 4E and County 18\3/4\, the corridor 
would proceed northeast parallel to the ASH corridor to the 
intersection with the A Canal, at which point it would proceed 
northeast parallel to the A Canal and the Gila-Sonora Transmission 
Line, cross Interstate 8, and enter the Gila Substation from the west. 
The Route Alternative would require the same modifications to Gila 
Substation as the Applicants' Proposed Action. Leaving the north side 
of Gila Substation, the proposed corridor would parallel the existing 
transmission lines to the north, span the Gila River, and proceed to 
the point of intersection of the existing transmission lines and Avenue 
9E. From the intersection of the existing transmission lines and Avenue 
9E, the

[[Page 58076]]

corridor would proceed north adjacent to Avenue 9E for approximately 
0.5 miles, and then proceed west into APS' North Gila Substation. The 
Route Alternative would require the same modifications to North Gila 
Substation as the Applicants' Proposed Action.
    Although the route identified in this alternative has fewer impacts 
than the Applicants' Proposed Action, this alternative was not selected 
in its entirety because it was determined that constructing the 
Proposed Project to 230-kV standards would meet the needs of the 
Proposed Project and result in less environmental impacts.

230-kV Alternative

    The 230-kV Alternative was identified because it would meet the 
Proposed Project objectives for transporting electric power and 
creating additional transmission into the Yuma area, but would result 
in less environmental impacts than the Applicants' Proposed Action. 
Under the 230-kV Alternative, the transmission system components would 
be constructed to 230-kV standards as opposed to 500-kV. This 
alternative would require 25 percent less ROW area than that required 
for a project constructed to 500-kV, shorter and less massive 
structures than a project constructed to 500-kV, and substation 
modifications to 230-kV standards instead of 500-kV.

No Action Alternative

    Under the No Action Alternative, Western would not approve an 
interconnection agreement; therefore, the proposed transmission lines, 
substation additions and modifications, and access roads within the 
United States would not be constructed, and the environmental impacts 
associated with their construction and operation would not occur.
    Western believes that the selection of the No Action Alternative 
would not necessarily preclude development of the SLRC Power Center, as 
the Applicants could construct and operate interconnection transmission 
lines to a Comisi[oacute]n Federal de Electricidad (CFE) substation 
within Mexico, which would allow the SLRC Power Center to be 
constructed, maintained, and operated solely for the purpose of serving 
power needs within Mexico. In this scenario, impacts from the operation 
of the SLRC Power Center similar to those described in the EIS would 
occur in the United States. This scenario is not subject to United 
States regulation because all of the project-related activities would 
occur entirely within Mexico.
    The No Action Alternative was not selected because it would not 
meet the needs defined in the EIS. The No Action Alternative would not 
have allowed Western to meet its obligations defined by its own Open 
Access Transmission Services Tariff, which was implemented to meet the 
intent of the Federal Energy Regulatory Commission (FERC) order to open 
transmission line access (FERC Order Nos. 888 and 888-A).

Agency Preferred Alternative

    After reviewing impacts for each of the alternatives, DOE 
identified a combination of the Route Alternative and 230-kV 
Alternative as the Agency Preferred Alternative. With this approach, 
the Proposed Project would use the route from the Route Alternative as 
described in the EIS, and be constructed to 230-kV standards. This 
combined alternative is both the Environmentally Preferred and the 
Agency Preferred Alternative. The Agency Preferred Alternative would 
include:
    1. A new 21.2-mile, double-circuit, 230-kV transmission line 
between a Point of Change of Ownership near the international border 
and Western's existing Gila Substation along the Route Alternative as 
defined in the EIS;
    2. A new 230/69-kV addition adjacent to Gila Substation as 
identified in the 230-kV Alternative defined in the EIS;
    3. A new 4.9-mile, double-circuit, 230-kV transmission line between 
Gila Substation and APS's North Gila Substation along the Route 
Alternative as defined in the EIS (the majority of this portion of the 
alignment will utilize a portion of existing ROW; Western anticipates 
that the existing double-circuit 69-kV line will be underbuilt);
    4. Modifications to North Gila Substation necessary to interconnect 
the 230-kV transmission lines into the substation as identified in the 
230-kV Alternative defined in the EIS (these modifications will be made 
through an agreement with APS); and
    5. Associated access roads, as needed.
    In addition to the transmission system additions located within the 
United States, the Proposed Project has other components that include 
the SLRC Power Center, natural gas pipelines, and electric transmission 
lines all located entirely within Mexico. Western does not have any 
jurisdiction over these components of the Proposed Project, as they are 
located entirely within Mexico. While the SLRC Power Center is not 
subject to the United States' regulatory requirements, Western 
evaluated impacts within the United States from its operation as part 
of the impact analysis and considered the environmental ramifications 
of the entire project in its decision making. Western has determined 
that the development of the Proposed Project components within Mexico 
will not have significant environmental impacts within the United 
States based on the analyses included in the EIS.
    Additional comments were received during the Final EIS waiting 
period that expressed concerns about property values, visual impacts, 
lack of notification about the Proposed Project, and potential 
interference with AM and FM radio, television, and ``ham'' radio signal 
reception and transmission. Property value issues were fully addressed 
in the EIS; potential effects generally range from somewhat positive to 
a negative impact of up to 15 percent. Studies find that property value 
impacts can be quite different from case to case, and that perceptions 
of impacts on value vary depending on the individual. Further, the 
presence of a transmission line is generally not the major determining 
factor of property values, and any impact generally diminishes over 
time.
    Visual impacts are also addressed in the EIS, and are closely 
linked to property value concerns. The Final EIS includes an entire 
underground construction study to address earlier comments to bury the 
proposed transmission line. Like perceptions of property value impacts, 
visual impacts are also highly variable depending on the individual. 
Western conducted a visual impact analysis using the BLM Visual 
Resource Management (VRM) system to determine the level of visual 
impact. The VRM system imposes a somewhat artificial structure on very 
subjective visual values, and looks at visual impacts from more of a 
societal view. The VRM system is the best and most widely accepted tool 
now available for impartial analysis of visual impacts. The analysis 
found that visual impacts would result from constructing the Proposed 
Project, but that they would not be significant. Western acknowledges 
that some residents will consider the impact of the Proposed Project on 
them to be significant.
    Several comments were received from residents who had not 
previously heard about the project, and who felt they had not had the 
opportunity for meaningful input. Following the Notice of Intent (NOI), 
Western held 12 stakeholder meetings, four public scoping meetings, and 
two public hearings in the Proposed Project area. The public scoping 
meetings were announced in the Federal Register, paid advertisements in 
the Yuma Sun and Bajo el Sol, and direct newsletter/local NOI mailings 
in English and Spanish to the project mailing list. Additional paid

[[Page 58077]]

advertisements and direct mailings announced the public hearings. In 
addition, the Yuma Sun published several articles, editorials, and 
letters to the editor about the Proposed Project during the EIS 
process. The project mailing list included landowners one-half mile 
from the centerline of all identified alternative routes, as identified 
from the county assessor records. The mailing list was updated as new 
mailings were prepared. While Western regrets that some residents feel 
they were not effectively involved, it believes that its public 
outreach effort was more than adequate.
    Potential interference to radio and television reception was also 
addressed in the EIS. Most cases of interference are directly related 
to spark gap discharges due to loose, worn, or defective transmission 
line hardware. Western operates about 17,000 miles of transmission 
lines, and interference issues are rarely reported. In the unlikely 
event an interference problem is encountered, Western will work with 
the affected party to eliminate the interference.

Mitigation Measures

    All measures identified in the EIS to minimize impacts from the 
transmission system additions have been adopted. Sections 2.1.1.8 and 
2.1.1.9 of the Draft EIS list Western's standard mitigation measures 
and additional mitigation measures included as part of the proposed 
action. Some of Western's standard measures include restricting 
vehicular traffic to existing access roads or public roads, 
recontouring and reseeding disturbed areas, environmental awareness 
training for all construction and supervisory personnel, and mitigation 
of radio and television interference generated by transmission lines. 
Additional measures identified for the Proposed Project include 
mitigation methods for projects within flat-tailed horned lizard 
habitat and measures identified in the Arizona Administrative Code 
pertaining to fugitive dust control to be employed during transmission 
line construction.
    Western is the lead Federal agency for compliance with section 106 
of the National Historic Preservation Act. Western's preferred form of 
mitigation is to avoid all identified sites. To the extent possible, 
cultural sites determined eligible for the National Register in 
consultation with the Arizona State Historic Preservation Office and 
interested tribes will be avoided by Proposed Project activities. 
Cultural sites that cannot be avoided will be mitigated in accordance 
with the Programmatic Agreement (PA) developed for the Proposed 
Project, which will govern all remaining activities necessary for 
section 106 compliance.
    Western is also the lead Federal agency for compliance with section 
7 of the Endangered Species Act, as amended. A biological assessment 
was prepared and submitted to the U.S. Fish and Wildlife Service 
(USFWS) with a determination that the Proposed Project ``may affect but 
is not likely to adversely affect'' any candidate, proposed, or listed 
species. In a letter dated March 26, 2007, USFWS concurred with this 
determination.

Floodplain Statement of Findings

    In accordance with 10 CFR part 1022, Western considered the 
potential impacts of the Proposed Project on floodplains and wetlands. 
The Proposed Project area is located in an arid region of low annual 
precipitation (less than 4 inches annually) with relatively low runoff 
potential, currently consisting primarily of open desert and 
agriculture interspersed with residences. Construction of the Proposed 
Project would not substantially alter the normal drainage patterns or 
affect runoff rates because the Proposed Project area does not 
typically experience runoff following a heavy rainfall due to the soils 
and geology of the area.
    All transmission system alternatives, including the selected 
alternative, would traverse the 100-year floodplain of the Gila River. 
The Proposed Project will be designed to span the width of the 100-year 
floodplain; therefore, no new structures are expected to be placed 
within the Gila River channel or associated 100-year floodplain. 
Structures located adjacent to the floodplain would be constructed with 
additional concrete reinforcement around the footing to withstand 
potential flood flow-rates. The footings would not present a barrier to 
flood flows if they should exceed the 100-year floodplain and reach 
these locations. If, after final project design, additional new 
structures are needed in the floodplain, they will be designed to 
conform to applicable Federal, State, and local floodplain protection 
standards. No wetlands would be affected by the Proposed Project.
    A Waters of the United States delineation and characterization 
survey was completed for the Proposed Project and the report was 
submitted to the U.S. Army Corps of Engineers (USACE) for review. In a 
letter dated March 1, 2007, USACE determined that ``although the 
proposed project area does include jurisdictional waters, your proposed 
project does not discharge dredged or fill material into a water of the 
United States or adjacent wetland.'' Therefore, the Proposed Project 
will not require a section 404 permit or a section 401 water quality 
certification.

Mitigation Action Plan

    A Mitigation Action Plan will be developed in accordance with 10 
CFR 1021.331 that addresses mitigation commitments described above. The 
Mitigation Action Plan will explain how the mitigation will be planned 
and implemented and will be available upon request.

Decision

    Western's decision is to allow the Applicants to interconnect with 
its transmission system at Gila Substation, and to construct the Agency 
Preferred Alternative. Western intends to enter into interconnection 
and construction agreements with NBR, and to construct, own, operate, 
and maintain the transmission system additions in the United States 
that would allow the interconnection. The costs of constructing, 
operating, and maintaining the transmission system additions would be 
borne by the Applicants. However, execution of the interconnection and 
construction agreements will not occur until the completion of 
Western's Large Generator Interconnection Procedures (LGIP) process. 
This process, which is compliant with FERC orders, takes a proposed 
project through feasibility studies, system impact studies, and a 
facilities plan, ultimately leading to identification and apportionment 
of costs. Assuming Western and NBR agree on the level and distribution 
of costs and responsibilities during the LGIP process, execution of the 
interconnection and construction agreements will finalize the decision 
described in this ROD. If for some reason Western and NBR fail to reach 
an accord, the no action alternative will result.
    This decision is based on the information contained in the San Luis 
Rio Colorado Project EIS (DOE/EIS-0395; Draft EIS issued October 2006, 
and Final issued July 2007). This ROD has been prepared in accordance 
with Council on Environmental Quality regulations for implementing NEPA 
(40 CFR parts 1500-1508) and DOE Procedures for Implementing NEPA (10 
Code of Federal Regulations [CFR] part 1021), and DOE's Floodplain/
Wetland Review Requirements (10 CFR part 1022). Full implementation of 
this decision is contingent upon the Proposed Project obtaining all 
other required permits and approvals.


[[Page 58078]]


    Dated: October 3, 2007.
Timothy J. Meeks,
Administrator.
 [FR Doc. E7-20179 Filed 10-11-07; 8:45 am]
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