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One particularly complex issue arises in a private cost recovery action where some but not all the PRPs have settled with the private party.

The Biden administration's Interagency Working Group on the Social Cost of Greenhouse Gases (the "Working Group") took its first step to update the costs to society from carbon dioxide...

On December 16, 2010, the California Air Resources Board ("CARB") approved a resolution ordering its Executive Officer to finalize, with certain changes, the greenhouse gas cap and trade regulations proposed by CARB on October 29, 2010.

As we reported previously, the California Air Resources Board (CARB) has taken a highly anticipated vote on its final proposed plan for addressing climate change...

The California Air Resources Board just released the results of its second auction of GHG allowances.

On July 12, 2016, the California Air Resources Board issued a Preliminary Draft Proposed Regulation Order and Staff Report, which would amend California's cap-and-trade regulations, 17 C.C.R. §§ 95801 et seq.

According to CARB, SLCPs such as black carbon, methane, and fluorinated gases have a significant impact on climate over the short term.

Although one might not ordinarily think to associate child pornography and pollution, the two were linked at an oral argument yesterday before the United States Supreme Court.

A number of states, industry groups, companies and environmental groups have filed petitions for review with the D.C. Circuit challenging EPA's final Cross State Air Pollution Update Rule.

The court noted that state agencies had issued two previous warnings to stop the pollution.

It is believed that the memorandum could be instrumental in the lawsuit challenging the rule which currently includes 30 states and nearly 20 industry groups.

The U.S. Supreme Court today upheld the U.S. Environmental Protection Agency’s Cross State Air Pollution Rule.

The case addresses NRDC's efforts to impose strict stormwater controls in Los Angeles County. It first made its way to the U.S. Supreme Court in 2012...

In its September 5, 2025, opinion in SSM Litigation Group v. EPA, the U.S. Court of Appeals for the D.C. Circuit overturned EPA's 2023 removal of the Title V affirmative defense for emergencies.

However, substantial pollution reporting requirements remain under existing law.

Texas AG Ken Paxton and the U.S. Department of Justice reached a settlement with chemical companies E.I. du Pont de Nemours and Co. and Performance Materials NA, Inc...

The Biden Administration's focus on Environmental Justice issues continues as two recent releases reveal.