SIP Approvals: Montana (attainment of the 1997 annual fine PM NAAQS for the Libby nonattainment area)

SIP Approvals: Missouri (idling of heavy-duty diesel vehicles).

SIP Approvals: Indiana/Kentucky (attainment of the annual average 1997 fine PM NAAQS for the bi-state nonattainment area).

SIP Approval: California (nitrogen oxide, carbon monoxide, sulfur dioxide (SO2), and particulate matter (PM) emissions for the San Joaquin Valley unified air pollution control district)

SIP Approvals: California (definition of terms for the Imperial County, Kern County, and Ventura County air pollution control districts).

EPA entered into a proposed administrative settlement under CERCLA that requires the settling party to pay U.S. response costs incurred at the B&B Manufacturing Superfund site in Mobile, Alabama.

EPA entered into a proposed settlement agreement in WildEarth Guardians v. Jackson, No. 3:10-cv-04603-WHA (N.D. Cal.), that establishes a deadline for the Agency to take action on NAAQS for Arizona, Nevada, Pennsylvania, and Tennessee.

EPA designated four new equivalent methods for monitoring ambient air quality.

EPA announced completion of its statutory requirement to promulgate emission standards under the CAA.

The CEQ issued instructions to federal agencies for integrating climate change adaptation into their policies and practices as required under Executive Order No. 13514, Federal Leadership in Environmental, Energy, and Economic Performance.