FWS reissued final rulemaking that identifies the northern Rocky Mountain population of gray wolf as a distinct population segment and removes most gray wolves from the list of endangered and threatened wildlife under the ESA.

NOAA-Fisheries established ocean salmon management measures for fisheries off the coasts of California, Oregon, and Washington through May 1, 2012.

EPA suspended the next submission period for the TSCA §8(a) Inventory Update Reporting regulations.

EPA withdrew rulemaking that granted a site-specific treatment variance to U.S. Ecology Nevada in Beatty, Nevada, and withdrew an existing site-specific treatment variance issued to Chemical Waste Management, Inc. in Kettleman Hills, California, due to adverse comment.

SIP Approval: Massachusetts (carbon monoxide maintenance plan for Lowell)

SIP Approval: Maryland (VOC emissions from large appliance coating facilities)

SIP Approval: Minnesota (sulfur dioxide (SO2) emissions).

EPA approved California's airborne toxic control measure for perchloroethylene emissions from dry cleaning and water-repelling operations in place of the national standards

SIP Approval: Illinois/Missouri (attainment of the 1997 annual PM NAAQS for the Saint Louis nonattainment area)

EPA finalized rulemaking that narrows thresholds of SIP PSD programs in 24 states that apply to GHG-emitting sources.