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New York v. Pruitt

A district court ordered EPA to issue federal implementation plans fully resolving interstate transport obligations under the CAA's "good neighbor" provision for the 2008 ozone NAAQS. EPA conceded that it missed the deadline to do so...

National Environmental Development Ass'n's Clean Air Project v. Environmental Protection Agency

The D.C. Circuit upheld amendments EPA made to its CAA regional consistency regulations that allow regional offices to act counter to national policies when ordered to do so by federal circuit courts. EPA issued the amended regulations...

Wyoming v. United States Bureau of Land Management

The Tenth Circuit refused to stay pending interlocutory appeal a lower court order staying BLM's waste prevention rule, which was issued to reduce the venting, flaring, and leaking of natural gas emissions during oil and gas production...

Prevention of Significant Deterioration: A Scalpel, Not an Axe

Does the United States need the Clean Air Act’s Prevention of Significant Deterioration (PSD) program to guard against degradation of air quality? In their recent Comment in these pages, John C. Evans and Donald van der Vaart say no,...

Community-in-Power & Development Ass'n v. Pruitt

A district court ordered EPA to promulgate revised CAA emission standards for nine industrial sectors by October 1, 2021. Environmental groups wanted the overdue rulemakings to be completed within two years, while the Agency requested...

Utility Air Regulatory Group v. Environmental Protection Agency

The D.C. Circuit upheld EPA's 2012 regional haze rule, which seeks to restore air quality and visibility in certain national parks and wilderness areas to what they would be under natural conditions. The rule requires states to impose...

Sierra Club v. Environmental Protection Agency

The D.C. Circuit granted in part and denied in part petitions concerning EPA's NESHAPs for industrial boilers. The first challenge raised by environmental groups concerned regulations that indirectly control a group of organic...

South Coast Air Quality Management District v. EPA

The D.C. Circuit held that EPA unlawfully revoked the 1997 ozone NAAQS when it implemented the 2008 standard. In 2008, EPA set the ozone NAAQS at 75 parts per billion (ppb). In 2015, when implementing the standard, the Agency eliminated...

Connecticut v. Pruitt

A district court held that EPA failed to act when it did not rule within 60 days on Connecticut's petition concerning upwind pollution. In June 2016, Connecticut filed a petition pursuant to §126(b) of the CAA for EPA to make a finding...

The Role of Energy Efficiency in Deep Decarbonization

The Deep Decarbonization Pathways Project Report calls for major increases in building and equipment efficiency to reduce U.S. greenhouse gas emissions by at least 80 percent from 1990 levels by 2050. While the U.S. Department of Energy...

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