Company: TVC
Filing Date: 2025-11-13
Form Type: 10-K
Source: 0001376986-25-000056
Chunk: 34

Company: Tennessee Valley Authority
Filing Date: 2025-11-13
Form: 10-K
Item: Item 6
Chunk 34
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 completed the conversion of all operational coal-fired plants to dry CCR storage, and ceased operation of wet CCR storage facilities.

    Dry generation and dewatering projects.  TVA has accomplished the conversion from wet to dry handling of CCR materials at all operating coal plants with the completion of dry generation and/or dewatering projects at Bull Run, Cumberland, Gallatin Fossil Plant ("Gallatin"), Kingston, and Shawnee.

    Landfills.  TVA has made strategic decisions to build and maintain lined and permitted dry storage facilities on TVA-owned property at some TVA locations, enabling these facilities to generate CCR beyond existing dry storage capacity.  Lined and permitted landfills are operational at Bull Run, Gallatin, Kingston, and Shawnee.  TVA received a State of Tennessee permit for the construction and operation of a new lined landfill at Gallatin, and construction started in 2022.  TVA received a State of Tennessee permit for a new lined landfill at Cumberland in 2023, and TVA is currently evaluating the need for construction.  Construction of additional lined and dry permitted storage facilities may occur to support future business requirements.

    CCR facilities closures.  TVA is working to close CCR facilities in accordance with federal and state requirements. Closure project schedules and costs are driven by the selected closure methodology (such as closure-in-place or closure-by-removal) and associated regulatory requirements.  Through implementation of applicable state and federal requirements, TVA anticipates that the predominant closure methodology for its CCR units is closure in place.  TVA issued a PEIS in June 2016 that programmatically evaluated the closure of CCR impoundments at TVA's coal-fired plants.  TVA issued its associated Record of Decision in July 2016.  The PEIS assessed the potential environmental effects associated with various modes of impoundment closures and through subsequent NEPA documents specifically evaluated and addressed closure methods at 10 impoundments.  TVA subsequently decided to close those impoundments.  The method of final closure for each of these facilities will depend on various factors, including approval by appropriate regulators and applicable closure requirements of state and federal regulations.  Additional site-specific NEPA studies will be conducted, as warranted, as other facilities are considered for closure.  See Note 14 — Asset Retirement Obligations.

    Groundwater monitoring.  Compliance with EPA's CCR rule ("CCR Rule") requires implementation of a groundwater monitoring program and ongoing analysis