EPA is detailing the legal defense for its power plant greenhouse gas standards, arguing that challengers are seeking to “conjure” demanding hurdles the agency must clear before it can rely on carbon capture and storage (CCS) as the basis for the rule’s strictest requirements. Critics argue that EPA’s justification for such standards “is inadequate because it did not identify a source that has employed ‘consistent, annual, facility-wide 90%-CO2-capture,’” the agency says in an Oct. 11 response brief in West Virginia,...