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EPA and the Transportation Department (DOT) are defending the legal basis for their just-issued rule revoking California’s power to set its own vehicle greenhouse gas limits, asserting the state is preempted by fuel economy law and lacks “compelling and extraordinary” conditions needed to receive such authority under the Clean Air Act.

EPA Administrator Andrew Wheeler told the House science committee Sept. 19 that the agency’s schedule for issuing its controversial rule barring regulators from relying on scientific research that is not published has slipped as the agency is preparing to issue a supplemental proposal in early 2020.

A bipartisan group of 15 governors is pressing leaders of the House and Senate Armed Services committees to back measures in pending defense authorization legislation that would require EPA and the Defense Department (DOD) to set policies to regulate the chemicals, curb releases and clean up contamination from per- and polyfluoroalkyl substances (PFAS).

California Air Resources Board (CARB) officials say they will continue to enforce the state’s strict vehicle greenhouse gas standards during litigation over the Trump administration’s just-issued revocation of the state’s Clean Air Act preemption waiver allowing it to set its own requirements.

Environmental and ratepayer groups are raising fears about the potential pollution and climate impacts of California energy regulators’ grid-reliability plan to allow several natural gas-fired power plants that use once-through-cooling (OTC) systems to operate for three years longer than the current 2020 retirement deadline for such plants.

EPA and the National Highway Traffic Safety Administration (NHTSA) have released the text of their final regulation revoking California’s authority to enforce auto greenhouse gas and zero-emission vehicle (ZEV) standards, with administration officials arguing the step is necessary to preserve a single set of national requirements.

A top official with California’s South Coast air district is making a late-hour push against the Trump administration’s draft final rollback of vehicle greenhouse gas and fuel economy standards, arguing the rule would bring a host of negative air quality, transportation funding and consumer cost impacts.