SCC Ruling Poised To Delay, But Not Fully Block, Many EPA Air Rules

The recent court injunction blocking use of revised social cost of carbon (SCC) estimates could cause important near-term delays to EPA rules including a long-awaited update to heavy truck emissions rules and federal ozone control plans, but observers say it is unlikely to entirely block a range of ongoing regulatory activities. The appraisals are broadly in line with a recent Justice Department (DOJ) memo highlighting significant disruption to federal rulemaking from the district court’s injunction, which targeted use of the...