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EPA science advisors are raising concerns about the agency’s human health hazard assessment in its draft risk evaluation of the common solvent perchloroethylene (perc or PCE), with some suggesting the panel could recommend the agency re-analyze key portions of the agency’s cancer and non-cancer evaluations.

EPA in a new determination finds the renewable fuel standard (RFS) has a mixed impact on air quality but says there is no need for the agency to mitigate any emissions increases because its separate Tier 3 fuels and vehicles rule largely achieves the air pollution cuts that such mitigation would secure, and no additional air controls are available.

The IRS has issued a long-awaited proposed rule outlining how carbon capture and storage (CCS) projects can claim crucial tax credits, rebuffing some industry demands to ease monitoring requirements for oil recovery projects while also rejecting several groups’ calls for full transparency on reporting.

New Mexico ranchers are seeking to block implementation of portions of the Trump administration’s waters of the United States (WOTUS) rule, arguing the rule’s application of the Clean Water Act (CWA) to intermittent tributaries and wetlands that do not directly abut other regulated waterbodies is contrary to Supreme Court precedent.

In a debate particularly relevant for future climate change rules, EPA advisers are wrestling with how agency guidelines should address discounting future benefits or costs from regulations, including how such guidance might accommodate policy shifts by a future White House.

EPA’s proposal to streamline its extensive suite of fuels rules is spurring calls for the agency to help biofuels makers by removing what they see as barriers in the rule that would hinder sales of higher ethanol blends, and a plea from refiners to scrap a plan that they fear could unlawfully force them to reveal confidential business information (CBI).

In a major setback for the energy sector and Trump administration, an appellate court has denied an emergency request from the Justice Department (DOJ) and industry to stay a landmark district court ruling that vacated the federal Clean Water Act (CWA) general permit for constructing new oil and gas pipelines.