EPA Readies New Model For Assessing ‘Legacy’ CCR Impoundment Risks

A source says EPA is preparing a notice of data availability (NODA) aimed at augmenting its proposal to set first-time regulations for legacy coal combustion residuals (CCR) surface impoundments and CCR management units (CCRMU), seeking data on a potential new model for assessing risk posed by coal ash stored in landfills, fills and waste piles. The White House Office of Management and Budget (OMB) on Oct. 11 began interagency review of an action designated a “notice” related to the legacy-sites...