FWS removed 189,671 acres from its 1996 critical habitat designation under the ESA for the marbled murrelet in northern California and southern Oregon. 

EPA Region 2 received a petition to determine whether adequate facilities for the safe and sanitary removal and treatment of sewage from all vessels are reasonably available for the New York state portion of Lake Ontario.

EPA announced the availability of the Gulf of Mexico Regional Ecosystem Restoration Strategy (Preliminary), in response to Executive Order No. 13554 of October 5, 2010, and seeks public comment. 

EPA promulgated significant new use rules under TSCA for 36 chemical substances that were the subject of premanufacture notices.

FWS proposed to remove the gray wolf in Wyoming from the list of endangered and threatened wildlife under the ESA and to remove its nonessential experimental population designation. 

SIP Proposal: California (partial approval of revisions to the 1997 fine PM NAAQS, deadline extension for attainment to April 5, 2015, and disapproval of contingency measures for the Los Angeles-South Coast area). 

SIP Proposal: California (partial approval of revisions to the 1997 fine PM NAAQS, deadline extension for attainment to April 5, 2015, and disapproval of contingency measures for the San Joaquin Valley). 

SIP Proposal: California (diesel PM, NOx, sulfur dioxide (SO2), and other pollutants from in-use, heavy-duty diesel-fueled trucks and buses and from ocean-going vessels). 

SIP Proposal: California (limited approval of revisions for NOxemissions for the the South Coast air quality management district). 

EPA established measures to mitigate the misfueling of vehicles, engines, and equipment with gasoline containing up to 15 volume percent ethanol and the potential emission consequences of misfueling.