EPA finalized minimum requirements under the SDWA for underground injection of carbon dioxide for the purpose of geologic sequestration.

EPA established criteria for nitrogen/phosphorus pollution in the lakes, flowing waters, and springs of Florida.

United States v. Mahard Egg Farm, Inc., No. 3:11-cv-01031-N (N.D. Tex. May 18, 2011). Settling CWA defendants responsible for violations of a concentrated animal feeding operation general permit and related laws and regulations at seven of its facilities in Texas must pay a civil penalty, must take steps to bring each of its facilities into compliance, and must restore the lands to prevent future discharges to area waterways.

In re Caribbean Petroleum Corp., No. 10-12553 (KG) (Bankr. D. Del. May 20, 2011). Settling CERCLA, CWA, Oil Pollution Act, and RCRA defendants responsible for violations at a petroleum distribution terminal in Bayamón, Puerto Rico, must provide the United States with general unsecured claims totaling $18,725,130 and must pay $8,200,000 in U.S. response costs and penalties.

United States v. Town of Greenwich, No. 3:11-CV-00674-RNC (D. Conn. Apr. 27, 2011). A settling CWA defendant that made unauthorized discharges from its wastewater collection system in violation of its NPDES permit must pay a $200,000 civil penalty, must rehabilitate a section of the Old Greenwich Common Force Main, must evaluate the need to replace other sections of the force main, and must pay additional penalties and replacement costs for any future ruptures.

United States v. BP Exploration (Alaska) Inc., No. 3:09-CV-00064-JWS (D. Alaska May 3, 2011). A settling CAA, CWA, and Pipeline Safety Law defendant responsible for violations in the operation of oil pipelines on the North Slope of Alaska must pay a $25 million civil penalty and must implement a comprehensive integrity management program to maintain its oil pipelines in Prudhoe Bay.

United States v. Kor, No. 10-4086 (D.S.D. Apr. 28, 2011). Settling CWA defendants that discharged pollutants into waters of the United States without a permit must pay a civil penalty, must restore the impacted areas, and must perform mitigation.

EPA proposed to approve Maine's NPDES program to include the permitting of all discharges within the Indian territories of the Penobscot Nation and the Passamaquoddy Tribe.

EPA Region 10 reproposed effluent limits for mercury, copper, total aromatic hydrocarbons, total aqueous hydrocarbons, silver, and whole effluent toxicity under the NPDES general permit for oil and gas exploration, development, and production facilities in Cook Inlet, Alaska.

The U.S. Army Corps of Engineers proposed to authorize Natural Resources Conservation Service-approved categorical exclusions for recurring conservation, restoration, and survey-related activities in waters of the United States.