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.

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. 

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.

FWS proposed to list two freshwater mussels as endangered throughout their ranges under the ESA.

FWS announced a 90-day finding on a petition to delist or reclassify six California species of plants under the ESA; the Agency found that delisting or reclassification may be warranted and initiated status reviews of the species.

NOAA proposed to revise the management plan and regulations for the Olympic Coast National Marine Sanctuary off the outer coast of Washington.

NOAA-Fisheries seeks public comment on critical habitat designation proposals for coho salmon and steelhead in watersheds in southwest Washington and northwest Oregon.