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Thirty-nine U.S. states have failed to provide their revised regional haze state implementation plans (SIPs) as required by Section 304(b)(2) of the Clean Air Act (CAA), according to a Notice of Intent (NOI) to file suit dated February 7, 2022, sent to the EPA by a coalition of environmental organizations, reports a Sierra Club press […]
The EPA Office of Inspector General (OIG) issued a June 14, 2021, report that says continued delays by the EPA on State Implementation Plan (SIP) actions “increase the risk that state or local air agencies are not implementing plans sufficient to achieve or maintain the [National Ambient Air Quality Standards (NAAQS)]” under the Clean Air […]
On April 7, 2021, the Center for Biological Diversity and the Center for Environmental Health filed suit in the U.S. District Court for the Northern District of California seeking declaratory and injunctive relief against the EPA due to missed deadlines in reviewing nonattainment state implementation plans (SIPs) in California and Chicago. The suit names Michael […]
A panel of the U.S. Court of Appeals for the D.C. Circuit rejected challenges the Sierra Club mounted against procedures the EPA uses to approve plans states develop to monitor compliance with the National Ambient Air Quality Standards (NAAQS).
