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EPA’s final evaluation of the solvent n-methylpyrrolidone (NMP) greatly expands the list of industrial uses that pose unreasonable risks compared to the draft version, though the final analysis also narrows the consumer uses that pose such risks and maintains the Trump-era policy of not considering risks that could be addressed under other laws.

The Department of Justice (DOJ) is strongly urging a federal appellate court to reject a request by youth plaintiffs pursuing a constitutional climate change suit against the government that would clear a path to allow them to petition the Supreme Court to reinstate their case, signaling the Biden administration may not be willing to settle the matter or reverse its predecessor’s opposition.

The United Nation’s Montreal Protocol treaty to protect the stratospheric ozone layer, which has evolved into a program that phases out product feedstocks that also have high global warming potential, could be used as a model to achieve reductions of other greenhouse gases such as methane and nitrous oxides (N2O), experts say.

Chemical companies and other industries are raising concerns over EPA’s plan to phase down hydrofluorocarbons (HFCs) using new statutory power, including questions about data gaps over unreported HFC imports, allowances for critical use exemptions, what metric to use to set the phasedown and criticisms of the short public comment period.

A coalition of 86 environmental groups is urging Northeastern states to adopt California’s strict policies for cutting greenhouse gases and conventional air pollutants from heavy duty vehicles, fighting claims from engine manufacturers that the California Air Resources Board’s (CARB) rules are ill-suited for adoption by other states.

Environmentalists are urging EPA to redo portions of its controversial TSCA evaluation of the solvent trichloroethylene (TCE), and craft risk management rules based on more conservative data, arguing that the Trump-era findings were tainted by “political interference” that President Joe Biden has already ordered the agency to remedy.

EPA faces a steep but feasible challenge with rebuilding its scientific capacity after its erosion during the Trump administration, according to former agency officials who say the Biden EPA should not only aim to restore that capacity but seek to entrench scientific “norms” so that a future administration cannot easily undo them.