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EPA’s draft risk evaluation of the common solvent trichloroethylene (TCE) finds multiple uses present unreasonable risks to exposed workers and consumers under the Toxic Substances Control Act (TSCA), even though the agency declined to use a controversial study indicating potential for congenital heart defects that industry has long disputed.

EPA is planning yet another revision to Obama-era coal ash rules that will address “legacy” disposal sites after excluding the issue from its most recent proposed regulatory changes, but an environmental attorney says the delay could revive legal battles on many aspects of the standards because EPA’s plan signals its “bold defiance” of court orders.

EPA is sending its long-awaited proposal setting criteria for biomass to be considered carbon neutral when burned for energy, and potentially when used in agricultural applications, to the White House Office of Management & Budget (OMB) for inter-agency review as soon as Feb. 21, sources say.

EPA has been unable to finalize potentially threshold changes underlying the cost-benefit analysis of its Mercury & Air Toxics Standards (MATS) rule because regulatory reviewers at the Office of Management & Budget (OMB) do not understand the measure’s broader goals, which is to narrow how benefits are calculated.

EPA and environmentalists have reached a tentative agreement setting deadlines for the agency to propose, and take “final action” on, a Clean Water Act (CWA) rule for responding to a “worst case discharge” of a hazardous substance following the administration’s decision last year to forgo a similar rule to prevent or contain industrial chemical spills.

EPA is proposing to reduce the frequency with which power plants, oil refineries and certain acid production plants must report to state regulators their emissions exceeding Clean Air Act-permitted limits, a move that could ease the facilities’ compliance burden but prompt criticism from environmentalists who often seek maximum pollution reporting.

Under pressure from lawmakers, states and others, EPA is proposing to develop drinking water limits for two of the most-studied per- and polyfluoroalkyl substances (PFAS), only the second time the agency has found pollutants meet the Safe Drinking Water Act’s (SDWA) criteria for setting such standards since the law was revised in 1996.