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Power companies are divided over EPA's push for a federal appeals court to delay May 18 oral arguments in two suits over the Obama-era utility maximum achievable control technology (MACT) rule, with coal utilities supporting the request while “clean” utilities that primarily use other fuels are urging the court to proceed with arguments.

A coalition of seven state attorneys general (AGs) is suggesting it may seek “revocation” of EPA's approval of Volkswagen's initial spending plan to promote zero emissions vehicles (ZEV) under the legal settlement that resolved the automaker's massive diesel emission cheating scandal, charging it could unfairly benefit the company's business.

The National Academy of Sciences (NAS) is preparing to publish a report reviewing EPA's Science to Achieve Results (STAR) grant program, an external research grant program long praised by NAS and agency science advisors, even as the Trump administration is proposing to eliminate it.

Biofuels supporters are urging EPA to meet a Nov. 30 statutory deadline for issuing final renewable fuel standard (RFS) targets for 2018, and adhere to Congress' specific goals for ethanol production -- a call that could get a boost from federal appeals court judges who doubted EPA's power to waive those goals due to “supply” limitations.

Amid continued uncertainty over the fate of many climate programs under the Trump administration, environmentalists and some industry groups are underscoring the importance of EPA's annual greenhouse gas inventory, while suggesting ways to improve the methodology going forward.

EPA staff is courting support from state regulators to preserve the Obama EPA's final rule strengthening training requirements for applicators of certain pesticides, calling the rule's development an example of the "cooperative federalism" the new administration backs and asking state officials to voice their support for the final rule in writing.

Federal appellate judges appear inclined to support the ethanol industry's interpretation of key Clean Air Act terms governing the renewable fuel standard (RFS), seemingly rejecting EPA's invocation of “inadequate domestic supply” to justify a cut in required ethanol blend volumes from statutory levels and boosting the chances that EPA will in the future stick to the congressionally mandated volumes.