EPA promulgated amendments on the collection and recovery procedures for particulate matter (PM) from stationary sources.

EPA determined that the Dallas/Fort Worth moderate nonattainment area failed to attain the 1997 eight-hour ozone NAAQS and reclassified the area as a serious ozone nonattainment area; attainment must be reached no later than June 15, 2013.

United States v. Unisea, Inc., No. 3:11-cv-00037-JWS (D. Alaska Mar. 9, 2011). A settling CERCLA, CWA, and EPCRA defendant that discharged ammonia and other pollutants from its facility in Unalaska must pay a $1,405,250 civil penalty to the United States, must pay a $504,125 civil assessment to Alaska, and must perform the specified injunctive relief.

EPA approved Virginia's negative declaration and request for EPA withdrawal of its CAA §§111(d) and 129 plan approval for hospital/medical/infectious waste incinerator (HMIWI) units.

United States v. Consol Energy, Inc., No. 1:11-cv-00028 (N.D. W. Va. Mar. 14, 2011). Settling CWA defendants responsible for NPDES permit violations and the discharge of pollutants into waters of the United States must pay a $5.5 million civil penalty and must perform injunctive relief at six mines. 

United States v. City of Alameda, No. C 09-05684 RS (N.D. Cal. Mar. 15, 2011). Under a Stipulated Order for Preliminary Relief, settling CWA defendants responsible for NPDES permit violations that resulted in unlawful sanitary sewer overflows must conduct studies and make recommendations to prevent discharges from three wet weather facilities. 

United States v. Cumbie, No. 2:08-CV-01825-RMG (D.S.C. Mar. 1, 2011). A settling CWA defendant that discharged fill material into waters of the United States must pay a civil penalty, must restore the impacted areas and perform mitigation, and must perform a supplemental environmental project.

United States v. Arch Coal, Inc., No. 2:11-cv-00133 (S.D. W. Va. Mar. 1, 2011). Settling CWA defendants that discharged pollutants into waters of the United States in Kentucky and West Virginia must pay a $4 million civil penalty and must perform various injunctive relief measures.

EPA issued a stay until March 14, 2011, of the requirement for chemical manufacturing area sources to comply with the NESHAPs permit program.

EPA issued an SIP call to 13 states whose plans do not apply PSD requirements to GHG-emitting sources and established deadlines for their compliance.