EPA entered into a settlement under CERCLA concerning the East Calloway County Middle School Mercury Spill site in Murray, Kentucky, that requires payment of past U.S. response costs incurred at the site.

EPA entered into a proposed administrative settlement under CERCLA that requires the settling party to pay $208,990 in U.S. response costs incurred at the Big River Mine Tailings Superfund site in St. Francois County, Missouri.

EPA entered into two proposed administrative settlements under CERCLA and RCRA that require the settling party to perform certain cleanup actions at the Caribbean Petroleum Refining, LP facility in Bayamon, Puerto Rico, and to assume responsibility for the UST systems and required cleanup work at 147 gasoline service stations.

FWS announced a 12-month finding on a petition to list the Puerto Rican harlequin butterfly as endangered and to designate critical habitat under the ESA; the agency found that listing is warranted but precluded by higher priority actions.

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

NOAA-Fisheries proposed to designate the Middle Columbia River steelhead as a nonessential experimental population under the ESA.

NOAA-Fisheries proposed to designate the Middle Columbia River steelhead as a nonessential experimental population under the ESA.

FWS-Fisheries proposed revisions to the regulations on textual descriptions of proposed and final critical habitat boundaries in the Federal Register, in response to Executive Order No. 13563 of January 18, 2011.

FWS announced withdrawal of a proposal to list the mountain plover as a threatened species under the ESA because threats to the species are not as significant as earlier believed.

FWS proposed to designate 57,756 acres in Ada, Elmore, Owyhee, and Payette Counties in Idaho as critical habitat for slickspot peppergrass.