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.

EPA entered into a proposed consent decree under the CAA requiring it to respond to a petition seeking the Agency's objection to a CAA Title V operating permit issued by the New Mexico Environment Department to Williams Four Corners LLC for the Sims Mesa Central Delivery Point facility by April 29, 2011.

FWS proposed to revise the designated critical habitat for the Pacific Coast population of the western snowy plover to a total of approximately 28,261 acres in California, Oregon, and Washington.

EPA issued a final rule requiring GHG monitoring and reporting from facilities that conduct geologic sequestration of carbon dioxide.

FWS announced a 12-month finding on a petition to list the Berry Cave salamander as endangered under the ESA; the agency found that listing is warranted but precluded by higher priority actions.

FWS proposed to withdraw its listing of the flat-tailed horned lizard as a threatened species under the ESA because the threat to the species is less significant than earlier believed.

FWS proposed to designate approximately 11,136 acres in Arizona and New Mexico as critical habitat for the Chiricahua leopard frog and proposed to list the species as threatened under the ESA. 

FWS announced a 90-day finding on a petition to list the Texas kangaroo rat as endangered or threatened and to designate critical habitat under the ESA; the agency found that listing may be warranted and initiated a status review.