EPA Rejects L.A. SIP Over Assumed Future Rules, Contingency Measures

February 5, 2024
EPA is proposing to reject a California state implementation plan (SIP) revision for the Los Angeles area to meet 1997 ozone standards because it improperly assumes future federal rules and lacks adequate contingency measures (CMs), triggering a two-year period before EPA must impose a federal plan if no valid state plan is submitted by then. “[W]e are proposing full disapproval of the Contingency Measure Plan, because it fails to provide contingency measures as required by [Clean Air Act (CAA)] section...

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