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Maryland v. Exxon Mobil Corp.
A district court granted in part and denied in part gasoline companies' motion for summary judgment in a lawsuit brought by the state of Maryland seeking to redress alleged contamination of its waters with methyl tertiary butyl ether. Maryland brought various common law claims and statutory claims u...
Clean Water Act Rulemaking
A district court vacated and remanded EPA's 2020 Clean Water Act Section 401 Certification Rule, which limited the ability of states and Native American tribes to regulate water pollution. States, tribes, and conservation groups sought to have the rule vacated, and EPA moved to remand without vacatu...
Rebutting Administrator Wheeler's Denial of a NAAQS for Greenhouse Gases
In 2009, when carbon dioxide (CO2) levels were at 387.43 parts per million, the Center for Biological Diversity and 350.org submitted a citizen petition calling on the U.S. Environmental Protection Agency to take steps necessary to institute a national ambient air quality standard (NAAQS) for greenhouse gas (GHG) emissions under §§108-110 of the Clean Air Act (CAA). For 12 years, the petition was simply ignored. Then, the day President Donald Trump left office, outgoing EPA Administrator Andrew Wheeler issued a letter denying the petition.