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Natl. Parks Conserv. Assn. v. EPA

A district court denied EPA's request to amend a 2012 consent decree obligating the Agency to approve state regional haze plans. In 2011, environmental groups sued the Agency to compel it to take action on nine states' regional haze plans. Under a consent decree, EPA was given until September 9, 201...

Sierra Club v. North Dakota

The Ninth Circuit upheld a 2014 EPA settlement that required the Agency to set a phased schedule for it to issue air quality designations as required by a 2010 sulfur dioxide NAAQS. In 2013, when EPA missed the statutory deadline to issue its designations under the CAA, environmental groups sued to ...

Sierra Club v. FERC

The D.C. Circuit held that carbon emissions from gas-burning power plants should have been considered in federal regulators’ review of a Florida natural gas pipeline. Environmental groups and landowners challenged a FERC decision to approve the construction and operation of three new interstate na...

Sinclair Wyoming Refining Co. v. EPA

The Tenth Circuit rejected EPA's decision to deny an oil company's request for an exemption from the blending requirement under the Renewable Fuel Standards Program of the CAA. In 2005, Congress amended the CAA to require refiners and importers to blend biofuels into gasoline to cut down on greenhou...

Benoit v. Saint-Gobain Performance Plastics Corp.

A district court allowed suits against two manufacturing companies to go forward for groundwater contamination. Residents of Hoosick Falls, New York, brought suit against the manufacturers after they discovered perfluorooctanoic acid (PFOA) in their water supply. The residents, in 16 consolidated ca...

Orange Cty. Water Dist. v. Sabic Innovative Plastics US, LLC

A California appellate court held that the Water District of Orange County may pursue state Superfund claims for groundwater contamination. In 1998, the District discovered two VOCs in groundwater drawn from the South Basin area. In 2001, perchlorate was discovered in a well, leading the District to...

Mexichem Fluor, Inc. v. EPA

The D.C. Circuit held that EPA overstepped its authority under the CAA when it banned the use of hydrofluorocarbons (HFCs) in products. In 2015, EPA issued a rule that restricted the manufacture of products containing HFCs. EPA based this decision on its authority to regulate "ozone depleting substa...