SIP Approval: California (VOC emissions for the Placer County and Ventura County air pollution control districts)

EPA established a federal implementation plan for Arizona, Arkansas, Florida, Idaho, Kansas, Oregon, and Wyoming because their SIPs fail to apply PSD requirements to sources of GHG emissions.

SIP Approval: California (VOCs for the Mojave Desert air quality management district)

EPA determined that Arizona, Arkansas, Florida, Idaho, Kansas, Oregon, and Wyoming have failed to submit revisions to their EPA-approved SIPs to apply PSD requirements to GHG-emitting sources.

SIP Approval: California (volatile organic compound (VOC) emissions from consumer products)

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

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.