Company: EAI
Filing Date: 2025-02-18
Form Type: 10-K
Source: 0000065984-25-000012
Chunk: 774

Company: ENTERGY ARKANSAS, LLC
Filing Date: 2025-02-18
Form: 10-K
Item: Item 7
Chunk 774
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 surrounding its CCR landfills located at White Bluff, Independence, and Nelson.  Monitoring to date has detected concentrations of certain listed constituents in the area but has not indicated that these constituents originated at the active landfill cells.  Reporting and detection monitoring will continue as the rule requires.  In late-2017, Entergy determined that certain in-ground wastewater treatment system recycle ponds at its White Bluff and Independence facilities required management under the 2015 CCR Rule.  Consequently, in order to move away from using the recycle ponds, White Bluff and Independence each installed a new permanent bottom ash handling system.  As of November 2020, both sites are operating the new system and no longer are sending waste to the recycle ponds.  Each site commenced closure of its two recycle ponds (four ponds total) prior to the April 11, 2021 deadline for unlined recycle ponds and the ponds were certified closed in October 2023.

In May 2024 the EPA finalized a rule (2024 CCR Rule) establishing management standards for legacy CCR surface impoundments (i.e., inactive surface impoundments at inactive power plants) and establishing a new class of units referred to as CCR management units (CCRMUs) (i.e., non-containerized CCR located at a regulated CCR facility).  CCR utilized in roadbeds and embankments is excluded from the CCRMU definition.  Entergy does not have any legacy impoundments; however, the definition of CCR management units includes on-site areas where CCR was beneficially used.  This is contrary to the 2015 CCR Rule which exempted beneficial uses that met certain criteria.  Under this expanded rule, all facilities must identify and delineate any CCRMU greater than one ton and submit a facility evaluation report by February 2026.  Any potential requirements for corrective action or operational changes under the 2015 CCR Rule and the 2024 CCR Rule continue to be assessed.  Notably, ongoing litigation has resulted in the EPA’s continuing review of the rules.  Consequently, the nature and cost of additional corrective action requirements may depend, in part, on the outcome of the litigation and further EPA review.  Given the complexity and recency of the EPA guidance, Entergy is still evaluating the level of work that will ultimately be required to comply with the 2024 CCR Rule.  Based on initial estimates of multiple possible remediation scenarios, Entergy recorded in