On March 3, 2020, the United States Environmental Protection Agency (EPA) published its most recent proposed revisions to the federal Coal Combustion Residuals (CCR) rule. The proposal, which EPA has coined “Part B” to its “Holistic Approach to Closure,” is a follow-up to the Part A proposal, which EPA published in November 2019. Part of a flurry of CCR-related activity, the Part B proposal comes just days after EPA issued its proposed federal CCR permit program.
As we previously reported, the purpose of EPA’s Part A proposal was to align the Agency’s regulations with the D.C. Circuit Court of Appeals’ August 2018 decision in USWAG v. EPA, 901 F.3d 414 (D.C. Circuit 2018). To that end, Part A proposed to (1) classify clay-lined surface impoundments as unlined, and (2) require all unlined surface impoundments to close.