EPA finalized revisions to the primary and secondary NAAQS for lead and associated monitoring requirements.

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.

EPA amended specific provisions in the GHG reporting rule to complement the final rule published on October 28, 2010.

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. AK Steel Corp., No. 97-1863 (W.D. Pa. Feb. 28, 2011). A settling CERCLA defendant responsible for violations at the Breslube Penn Superfund site in Coraopolis, Pennsylvania, must pay $1,398,412 in contribution claims and past U.S. response costs incurred at the site. 

In re Motors Liquidation Corp., No. 09-50026 (REG) (Bankr. S.D.N.Y. Mar. 4, 2011). Settling CAA, CERCLA, and RCRA parties responsible for violations at multiple facilities and sites nationwide must pay $4,613,322 from bonds, with an additional $10.5 million in bond requirements for six non-owned sites, must provide the United States with an allowed general unsecured claim of $36,290,270 for environmental remediation at 29 non-owned sites, and must pay civil penalties for violations at multiregional sites. 

United States v. Manzo, No. 3:97-cv-00289 (D.N.J. Mar. 2, 2011). Settling CERCLA defendants responsible for violations at the Burnt Fly Bog Superfund site in Middlesex and Monmouth Counties, New Jersey, must pay $19.025 million in U.S. response costs and natural resource damages incurred at the site.

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.