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EPA appears to be deciding against across-the-board changes to its cost-benefit methods but is instead moving ahead with “media-specific” changes, an approach that appears to continue its plan for more “consistency” in cost-benefit reviews but also take into account that requirements for such analysis vary across environmental statutes.

House Democrats and Republicans are clashing over whether EPA should count the “co-benefits” of its air rules in cost-benefit analyses of the policies, a debate that will be key to the future not only of EPA’s power plant air toxics rules but also likely for the agency’s cost-benefit analysis for all future Clean Air Act rulemakings.

A recent National Academy of Sciences (NAS) report proposing a clustering approach of grouping flame retardant chemicals into subclasses for risk assessment is highlighting the emerging consensus that EPA and others are considering for addressing per- and polyfluoroalkyl substances (PFAS), another large group of ubiquitous chemicals that are also subject to high-profile public scrutiny.

House appropriators are ramping up their scrutiny of some of the Trump EPA's controversial science decisions, all but barring the agency from advancing its data transparency rule until after consulting with its own science advisors and then requiring the agency to seek National Academy of Sciences (NAS) review of any final data rule.

EPA is defending its landmark approval of Oklahoma’s coal ash disposal permit program and saying the state will have three years to revise its plan and adapt to mandatory stricter federal disposal requirements, but environmentalists say they will pursue citizen suits over site-specific cleanup plans regardless of the agency’s actions.

State regulators are outlining ways for state and federal agencies to better manage contaminants of emerging concern (CECs) in all aspects of the water cycle, spurred in part by concerns over the time it takes to develop drinking water standards and the lack of coordination among state and federal entities, as evidenced in a patchwork of standards for perfluorinated compounds.

The renewable natural gas (RNG) industry representing gas production from landfills and agricultural operations is urging the White House to hike EPA’s pending 2020 renewable fuel standard (RFS) cellulosic biofuel production goal to account for robust growth in the sector, though the slow pace of other cellulosic biofuels growth could hinder the push.