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Clean Air Act (CAA)

Protecting Air for Waterville v. Ohio Environmental Protection Agency

The Sixth Circuit dismissed environmental groups' petition to review air pollution control permits issued by Ohio's Environmental Protection Agency for two natural gas compressor stations along a natural gas pipeline that runs from Ohio...

Air Alliance Houston v. U.S. Chemical and Safety Hazard Investigation Board

A district court granted environmental groups' request to compel the U.S. Chemical and Safety Hazard Investigation Board to promulgate regulations concerning accidental chemical releases. The groups argued that the Board's failure to...

National Parks Conservation Ass'n v. North Dakota Department of Health

A state court upheld the North Dakota Department of Health's decision to issue an air quality permit for construction of an oil refinery less than three miles from Theodore Roosevelt National Park. Environmental groups argued that the...

California v. United States Environmental Protection Agency

A district court denied EPA's motion to dismiss a lawsuit brought by several states alleging that the Agency failed to implement and enforce its 2016 Emission Guidelines and Compliance Times for Municipal Solid Waste Landfills. The...

Masias v. Environmental Protection Agency

The D.C. Circuit denied two petitions to review EPA attainment designations for the 2010 sulfur dioxide NAAQS. An environmental group argued that the Agency should have designated Gallia County, Ohio, as a nonattainment area rather than...

Sierra Club v. Wheeler

A district court granted in part an environmental group's request to compel EPA to produce guidelines for commercial or industrial solid waste incinerators (CISWI) and other categories of solid waste incinerators (OSWI). The group...

American Fuel & Petrochemical Manufacturers v. O'Keeffe

The Ninth Circuit affirmed the dismissal of oil and trucking industry groups' challenge to Oregon's Clean Fuels Program, which regulates production and sale of transportation fuels based on greenhouse gas emissions. The groups argued...

Montana Environmental Information Center v. Thomas

The Ninth Circuit denied an environmental group's petition to review EPA's approval of a Montana SIP revision. The group argued that the approval was arbitrary and capricious because Montana's Department of Environmental Quality...

Air Alliance Houston v. Environmental Protection Agency

The D.C. Circuit vacated EPA's rule delaying the 2017 Chemical Disaster Rule, which established safety standards for chemical facilities. The Agency argued that it had authority under CAA §112 to delay the effective date of the Rule...

Ass'n of Irritated Residents v. United States Environmental Protection Agency

A district court granted in part an environmental group's motion for summary judgment to compel EPA to act on its 2016 Plan for the 2008 eight-hour ozone NAAQS adopted by the San Joaquin Valley Air Pollution Control District and granted...

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