Cumberland Fossil Plant Coal Combustion Residuals Management Operations Final Environmental Impact Statement, 26534-26537 [2018-12236]

Agencies

• Tennessee Valley Authority

[Federal Register Volume 83, Number 110 (Thursday, June 7, 2018)]
[Notices]
[Pages 26534-26537]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2018-12236]



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TENNESSEE VALLEY AUTHORITY


Cumberland Fossil Plant Coal Combustion Residuals Management 
Operations Final Environmental Impact Statement

AGENCY: Tennessee Valley Authority.

ACTION: Record of decision.

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SUMMARY: This notice is provided in accordance with the Council on 
Environmental Quality's regulations and Tennessee Valley Authority's 
(TVA) procedures for implementing the National Environmental Policy Act 
(NEPA). TVA has decided to construct and operate a bottom ash 
dewatering facility, process water basins, and an onsite landfill at 
the Cumberland Fossil Plant (CUF). The notice of availability (NOA) of 
the Final Environmental Impact Statement (EIS) for the Cumberland 
Fossil Plant Coal Combustion Residuals Managment Operations was 
published in the Federal Register on April 20, 2018. The Final EIS 
identified TVA's preferred alternative as Alternative C, which includes 
the Construction and Operation of a Bottom Ash Dewatering Facility, 
Closure-In-Place of the Bottom Ash Impoundment, and a combination of 
Closure-in-Place and Closure-by-Removal of the Main Ash Impoundment and 
Stilling Impoundment. The portion of the Main Ash Impoundment and the 
Stilling Impoundment that would be Closed-by-Removal would be 
repurposed as Process Water Basin 1 and Process Water Basin 2, with 
coal combustion residuals (CCR) that are removed from the impoundment 
transported to an existing onsite landfill. In addition, under 
Alternative C, TVA would construct an onsite landfill to manage future 
CCR produced at CUF. TVA's current decision pertains only to the 
construction and operation of a Bottom Ash Dewatering Facility, 
construction and operation of the new onsite CCR Landfill, and 
construction of the Processs Water Basins, which includes removal of 
CCR from a portion of the Main Ash Impoundment and the Stilling 
Impoundment. TVA is electing to further consider the location for 
permanent disposal of the ash excavated from the Main Ash Impoundment 
and the Stilling Impoundment. CCR removed for construction of the 
basins would be staged temporarily within the Main Ash Impoundment 
footprint until a final decision is made (following any necessary 
supplemental environmental review) on a location for permanent disposal 
of the material. The preferred alternative would achieve the project 
purpose and need of converting the wet storage of CCR to a dry system 
and promoting the future management of dry CCR at CUF by converting to 
dry bottom ash handling and providing additional long-term disposal for 
dry CCR materials produced at CUF. In addition to state and federal 
water and waste regulations, TVA's CCR disposal areas at CUF, including 
the impoundments, are subject to the 2015 Commissioner's Order entered 
by the Tennessee Department of Environment and Conservation (TDEC). 
Investigations at CUF under that Order are ongoing. Therefore, TVA is 
electing to further consider the proposed in-place closure of the 
Bottom Ash Impoundment and a portion of the Main Ash Impoundment before 
making a decision on closure of these facilities. In addition, TVA is 
electing to further consider the location for permanent disposal of the 
ash excavated from the Main Ash Impoundment and the Stilling 
Impoundment.

FOR FURTHER INFORMATION CONTACT: Ashley Pilakowski, Project 
Environmental Planning, NEPA Project Manager, Tennessee Valley 
Authority, 400 W Summit Hill Drive (WT 11D), Knoxville, Tennessee 
37902; telephone (865) 632-2256, or by email [email protected]. The 
Final EIS, this Record of Decision (ROD) and other project documents 
are available on TVA's website https://www.tva.gov/nepa.

SUPPLEMENTARY INFORMATION: TVA is a corporate agency of the United 
States that provides electricity for business customers and local power 
distributors serving more than 9 million people in an 80,000 square 
miles comprised of most of Tennessee and parts of Virginia, North 
Carolina, Georgia, Alabama, Mississippi, and Kentucky. TVA receives no 
taxpayer funding, deriving virtually all of its revenues from sales of 
electricity. In addition to operating and investing its revenues in its 
power system, TVA provides flood control, navigation and land 
management for the Tennessee River system and assists local power 
companies and state and local governments with economic development and 
job creation.
    Built between 1968 and 1973, the two-unit plant at CUF generates 
enough energy to supply about 1.1 million homes. The plant consumes an 
average of 5.6 million tons of coal annually and produces nearly 1 
million tons of CCR each year. The CCR consist of fly ash, bottom ash, 
commercial grade gypsum, and solids from the flue gas desulfurization 
(FGD) process. TVA has managed storage of CCR materials at CUF in a 
combination of dry stacks and impoundments. Bottom ash generated by the 
operating units is sluiced to the existing Bottom Ash Impoundment where 
most of the material settles out. The settled bottom ash is excavated 
and stacked in the Fly Ash Stack. Water from the Bottom Ash Impoundment 
flows to the Main Ash Impoundment and Stilling Impoundment before being 
discharged to the Cumberland River through a permitted outfall. Fly ash 
is transported in dry form to the Fly Ash Stack. Gypsum is dewatered 
and conveyed to an adjacent wall-board manufacturer or disposed in the 
Gypsum Stack or to lined channels where it is dewatered, stockpiled for 
later use, or disposed in the Gypsum Stack.
    The approximately 2,470 megawatts of generating capacity provided 
by CUF is important in maintaining an adequate and reliable power 
supply to the north-central portion of TVA's service area. Accordingly, 
CUF was identified in TVA's 2015 Integrated Resource Plan as one of the 
coal plants that TVA plans to continue operating in the future. The 
purpose of the proposed action is to convert the wet storage of CCR to 
a dry system, to promote the future management of dry CCR at CUF, and 
to meet the state and federal regulatory requirements for closing ash 
impoundments including EPA's CCR Rule. The project helps fulfill TVA's 
goal to convert wet CCR storage to dry and applies to both existing CCR 
(CCR in the impoundments) and future CCR (dry CCR that would be 
produced from CUF operations under all of the alternatives). In 
addition, the dewatering facilities would also foster TVA's compliance 
with present and future regulatory requirements. This includes the 2015 
TDEC Commissioner's Order that requires TVA to evaluate and remediate, 
if necessary, CCR risks at its plants in Tennessee, except Gallatin. 
The TDEC Commissioner's Order and other environmental regulatory 
programs help ensure that CCR management activities at TVA's plants 
will continue to be protective of human health and the environment.
    To enable this wet-to-dry conversion, TVA proposes several projects 
including: construction and operation of a Bottom Ash Dewatering 
Facility; closure of the existing ash impoundments; construction and 
operation of process water basins to handle process wastewater and 
storm water that previously was routed to the impoundments; and 
construction and operation of a landfill within the boundaries of TVA 
owned property on

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CUF (onsite) for disposal of future dry CCR generated at the plant.

Alternatives Considered

    Based on an extensive analysis of options to manage CCR produced at 
CUF, TVA considered four alternatives in the Draft EIS and Final EIS. 
These alternatives are:
    Alternative A--No Action. Under this Alternative, TVA would not 
construct the proposed Bottom Ash Dewatering Facility and current 
operations for handling sluiced bottom ash would not change. TVA would 
not close the ash impoundments. Accordingly, TVA would not seek 
additional disposal options for dry placement of CCR generated at CUF. 
Rather, CCR would continue to be managed in the current impoundments 
and onsite stacks for as long as storage capacity is available. The No 
Action Alternative is not consistent with other actions that TVA could 
be required to take in response to the CCR Rule and other regulatory 
programs including the TDEC Commissioner's Order.
    Consequently, this alternative would not satisfy the project 
purpose and need and, therefore, is not considered viable or 
reasonable. It does, however, provide a benchmark for comparing the 
environmental impacts of implementation of Alternatives B, C, and D.
    Alternative B--Bottom Ash Dewatering Facility, Ash Impoundment 
Closure (In-Place or By-Removal to Offsite Landfill), Onsite Landfill 
for Future CCR Produced at CUF. Under Alternative B, TVA would complete 
a series of actions to manage CCR produced at CUF. These actions 
include:
    1. Construct and operate a Bottom Ash Dewatering Facility at one of 
two previously disturbed sites proximate to the Main Plant. TVA may 
construct a recirculation system in a subsequent phase where excess 
water would be routed back to the plant for future sluicing or other 
allowed reuse operations. The recirculation system would be contained 
within the existing facility footprint.
    2. Consolidation and Closure-in-Place of the Bottom Ash Impoundment 
and North Ditch. Closure-by-Removal of a portion of the Main Ash 
Impoundment and the Stilling Impoundment and repurposing the closed 
portion as lined Process Water Basin 1 and Process Water Basin 2. To 
facilitate construction of the lined process water basins, CCR from 
these areas, plus a foot of underlying soil would be removed and 
transported to an approved offsite disposal facility. Specifically, 
approximately 180,000 yd\3\ of CCR material would be removed from the 
Stilling Impoundment and approximately 245,700 yd\3\ of CCR material 
would be removed from the Main Ash Impoundment. A geosynthetic clay 
liner would be installed over these areas followed by a non-woven 
geotextile cushion and 18 inches of protective cover.
    3. Construct and operate a landfill for disposal of future dry CCR 
generated at the plant on a site located approximately 1.2 miles 
southwest of the plant site which is still on CUF property. The 
selected site encompasses approximately 174 acres with a landfill 
footprint of approximately 80 acres. The landfill would be built in 
four major stages with a total estimated capacity of 14.3 million 
yd\3\. At current generation levels, the closure date of this landfill 
is approximately 2040. In the event beneficial reuse via marketing 
continues at its current rate, the landfill closure is approximately 
2100. The estimated capacity provides adequate CCR storage for long-
range planning purposes.
    Alternative C--Bottom Ash Dewatering Facility, Ash Impoundment 
Closure (In-Place or By-Removal to Existing Onsite Landfill), Onsite 
Landfill for Future CCR Produced at CUF. Under Alternative C, TVA would 
construct and operate a series of related actions to manage CCR 
produced at CUF. These actions include:
    1. Construct and operate a Bottom Ash Dewatering Facility as 
described for Alternative B.
    2. Consolidation and Closure-in-Place of the Bottom Ash Impoundment 
and North Ditch. Closure-by-Removal of a portion of the Main Ash 
Impoundment and Stilling Impoundment and repurpose the closed portion 
as lined Process Water Basin 1 and Process Water Basin 2. The closure 
of the ash impoundments under this option would be the same as 
described under Alternative B. However, under this alternative, CCR 
removed from the ash impoundments would be transported to the existing 
onsite landfill (Fly Ash Stack) for long-term storage.
    3. Construct and operate a landfill for disposal of future dry CCR 
generated at the plant onsite as described under Alternative B.
    Alternative D--Bottom Ash Dewatering Facility, Ash Impoundment 
Closure (In-Place or By-Removal to Offsite Landfill), Offsite Landfill 
for Future CCR Produced at CUF. Under Alternative D, TVA would 
construct and operate a series of related actions to manage CCR 
produced at CUF. These actions include:
    1. Construct and operate a Bottom Ash Dewatering Facility as 
described for Alternative B.
    2. The closure of the ash impoundments under this option would be 
the same as described under Alternative B.
    3. Dry CCR produced at CUF would be transported by truck to an 
offsite landfill, the Bi-County Solid Waste Management Landfill 
(located approximately 12 miles northeast of CUF) along public 
roadways. No landfill would be constructed at CUF.
    Barge and rail transport were not considered feasible options for 
this EIS as the facilities at CUF are not configured and designed to 
support loading and transport of CCR offsite and as such would need to 
be expanded and improved which could result in environmental impacts 
and would require additional environmental permitting. In addition, 
rail and barge facilities are not typical near permitted landfills and 
are not available at the Bi-County Solid Waste Management Landfill. 
Therefore, any CCR hauled by barge or rail for landfill disposal would 
still entail trucking.

Environmentally Preferred Alternative

    The EIS includes baseline information for understanding the 
potential environmental and socioeconomic impacts associated with the 
alternatives considered by TVA. TVA considered 21 resource areas 
related to the human and natural environments and the impacts on these 
resources associated with each alternative.
    Alternative A (No Action) would result in fewer environmental 
impacts than Alternative B, C and D. However, Alternative A does not 
meet the purpose and need for the project as continuing current 
operations would not promote the future management of dry CCR at CUF, 
and would not meet the state and federal regulatory requirements for 
closing ash impoundments including EPA's CCR Rule and the TDEC 
Commissioner's Order. Implementation of Alternative B would result in 
minimal unmitigated impacts to the environment, most of which would be 
related to construction activities that would be temporary in nature 
and minimized with implementation of best management practices. The 
landfill would change the existing visual integrity which would result 
in a long-term moderate impact to the viewshed of some members of the 
surrounding community. Scenic attractiveness may be reduced to minimal 
in the foreground, but would remain common in the middleground and 
background. Long-term impacts to streams, aquatic

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and cultural resources, alteration of bat foraging habitat, and impacts 
to 0.5 acre of wetland associated with construction of an onsite 
landfill would be mitigated as described below. The transport of CCR 
from a portion of the Main Ash Impoundment and the Stilling Impoundment 
to an existing offsite landfill would result in air emissions, 
increased traffic and associated long-term safety risks, and 
disruptions to the public that would be related to such off-site 
transport. Impacts associated with Alternative C would be the same as 
for Alternative B, except this alternative would avoid the offsite 
transport of existing CCR from the Closure-by-Removal of a portion of 
the Main Ash Impoundment and the Stilling Impoundment as CCR removed 
from these facilities would be transported to the existing onsite 
landfill. Under Alternative D, impacts associated with the construction 
and operation of the Bottom Ash Dewatering Facility would be the same 
as Alternatives B and C. There would be no impacts to the natural 
environment associated with taking CCR to an offsite landfill. However, 
impacts to air quality, transportation, public health and safety would 
be higher than Alternatives B and C because of the transport of 
existing CCR from the Closure-by-Removal of the Main Ash Impoundment 
and the Stilling Impoundment as well as the transport of future CCR 
generated at CUF to an offsite landfill.
    TVA determined that Alternative C, which avoids the offsite 
transport of CCR on public roadways would be the environmentally 
preferable alternative.

Public Involvement

    On December 5, 2016, TVA published a Notice of Intent (NOI) in the 
Federal Register announcing that it planned to prepare an EIS to 
address the management of CCR at CUF. The NOI initiated a public 
scoping period, which concluded on Janaury 6, 2017. In addition to the 
NOI in the Federal Register, TVA published notices regarding this 
effort in regional and local newspapers; issued a news release to the 
media outlets; and posted the news release on the TVA website to 
solicit public input. TVA also developed an initial project mailing 
list that included local and regional stakeholders, governments and 
other interested parties. Letters were sent to notify those on the list 
of the project. Approximately 350 postcards were also mailed to all 
residents within 3 miles of the CUF plant.
    TVA also hosted an open house public scoping meeting on December 
12, 2016, at the Freedom Point Events Center at Liberty Park in 
Clarksville, Tennessee. Comments received addressed project 
alternatives, adequacy of impact analysis, groundwater and surface 
water, aquatic ecology, tiering from the PEIS, and other general topics
    The Notice of Availability (NOA) of the Draft EIS was published in 
the Federal Register on November 17, 2017, initiating a 45-day public 
comment period. The Draft EIS was posted on TVA's website and hard 
copies were available by request. To solicit public input, the 
availability of the Draft EIS was announced in regional and local 
newspapers and a news release was issued to the media and posted to 
TVA's website. TVA hosted a public meeting on November 28, 2017, at the 
Cumberland City Fire Hall in Cumberland City, Tennessee. Notification 
of the public meeting was sent to all addresses within 3 miles of the 
CUF plant, and was also published in local newspapers. TVA's agency 
involvement included sending letters to local, state, and federal 
agencies and federally recognized tribes to notify them of the 
availability of the Draft EIS. The public comment period closed on 
January 2, 2018.
    TVA received 69 comments from 15 commenters. Of the 15 submissions, 
three were from federal entities, one was from a state entity, one was 
from a group of environmental advocacy organizations, and 10 were from 
members of the public. Comments were received in relation to the Draft 
EIS's sufficiency, compliance with the CCR Rule and TDEC Commissioner's 
Order, selection of the preferred alternative, groundwater and surface 
water impacts, local geology, air impacts, solid waste management, and 
other general topics. TVA provided responses to these comments, made 
appropriate minor revisions to the Draft EIS, and issued a Final EIS.
    The NOA for the Final EIS was published in the Federal Register on 
April 20, 2018.

Decision

    TVA has decided to implement portions of the preferred alternative 
identified in the Final EIS, Alternative C. This decision includes the 
construction and operation of a Bottom Ash Dewatering Facility, 
construction and operation of an onsite landfill, and Closure-by-
Removal of a portion of the Main Ash Impoundment and the Stilling 
Impoundment. The closed area would be repurposed as Process Water Basin 
1 and Process Water Basin 2. CCR removed for construction of the basins 
would be staged temporarily within the Main Ash Impoundment, and TVA 
will further consider its options before making a decision as to the 
location for the permanent disposal of the CCR. TVA will issue a 
decision regarding this and any additional documentation at a future 
date.
    In addition to state and federal water and waste regulations, TVA's 
CCR disposal areas at CUF, including the impoundments, are subject to 
the 2015 TDEC Commissioner's Order. Therefore, it is TVA's intention 
not to pursue Closure-in-Place activities immediately, but rather let 
the execution of the requirements of the TDEC Commissioner's Order 
guide the closure activities to the maximum extent possible while 
complying with the requirements of the CCR Rule. TVA will issue a 
decision regarding closure of the remaining portion of the Main Ash 
Impoundment and the Bottom Ash Impoundment and any additional 
documentation at a future date.

Mitigation Measures

    TVA will use appropriate best management practices during all 
phases of construction and operation of the Bottom Ash Dewatering 
Facilty, the process water basins and the landfill. Mitigation 
measures, actions taken to reduce adverse impacts associated with the 
proposed action, include:
     A TDEC Aquatic Resources Alteration Permit and U.S. Army 
Corps of Engineers 404 permit will be required for disturbance to 
wetlands and stream features, and the terms and conditions of these 
permits would likely require mitigation for these proposed activities. 
TVA will adhere to all conditions stipulated in these permits.
     TVA will implement supplemental groundwater mitigation 
measures that could include monitoring, assessment, or corrective 
action programs as mandated by state and federal requirements. The CCR 
Rule and state requirements provide an additional layer of groundwater 
protection to minimize risk.
     TVA will coordinate with the Tennessee Department of 
Transportation and Stewart County transportation officials as needed to 
develop appropriate mitigation measures to reduce localized temporary 
transportation effects.
     Potential impacts to Wells Creek and/or Scott Branch from 
landfill leachate and storm water discharges will be mitigated as 
required to meet permit requirements.
     Forested land within the proposed landfill project area is 
of low summer roosting quality for threatened and endangered bats, 
although it may be used as a foraging area. Section 7

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consultation with U.S. Fish and Wildlife Service has been completed. No 
tree removal would occur between June 1 and July 31 to avoid any 
potential direct impact to juvenile bats at a time when they are unable 
to fly.
     TVA executed a memorandum of agreement with the Tennessee 
State Historic Preservation Officer to address the adverse effects of 
National Register of Historic Places listed site 40SW219.

    Dated: May 31, 2018.
Robert M. Deacy, Sr.,
Senior Vice President, Generation Construction, Projects & Services, 
Tennessee Valley Authority.
[FR Doc. 2018-12236 Filed 6-6-18; 8:45 am]
 BILLING CODE 8120-08-P