FWS announced a 90-day finding on a petition to list the Arapahoe snowfly 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.

FWS announced a 12-month finding on a petition to list the Hermes copper butterfly as endangered under the ESA and to designate critical habitat; 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 prairie chub as threatened or endangered under the ESA and to designate critical habitat in Oklahoma and Texas; the agency found that listing may be warranted and initiated a status review.

FWS announced a 90-day finding on a petition to list the Spring Mountains acastus checkerspot butterfly as endangered under the ESA; the agency found that listing may be warranted and initiated a status review.

FWS proposed to list the Three Forks and San Bernardino springsnails as endangered under the ESA and to designate approximately 11.9 acres in Apache and Cochise Counties, Arizona, as critical habitat for the species.

FWS announced a 90-day finding on a petition to list the Peary and the Dolphin and Union population of the barren-ground caribou as endangered or threatened under the ESA; the agency found that listing may be warranted and initiated a status review.

FWS announced a 12-month finding on a petition to designate critical habitat and to list as endangered or threatened the Bearmouth and Byrne Resort mountainsnails and the meltwater lednian stonefly; the agency found that listing the meltwater lednian stonefly is warranted but precluded by higher priority actions.

FWS announced a 90-day finding on a petition to list the spring pygmy sunfish as endangered under the ESA; the agency found that listing is warranted and initiated a status review.

EPA proposed revisions to the NPDES permits for cooling water intake structures at certain facilities to minimize adverse environmental impacts.

United States v. Northeast Ohio Regional Sewer District, No. 10-cv-02895 (N.D. Ohio Dec. 22, 2010). A settling CWA defendant that violated its NPDES permit for its municipal wastewater and sewer system must implement injunctive measures, including the construction of seven deep underground tunnel systems—to reduce its combined sewer overflow (CSO) discharges—and construction of treatment plant expansions, for a total cost of approximately $3 billion; must invest $42 million in green infrastructure that will further reduce its CSO discharge by 44 million gallons; must pay $1.2 million in civil penalties to be split evenly between the United States and the state of Ohio; must spend $1 million to operate a permanent hazardous waste collection center in Cuyahoga County; and must spend $800,000 to improve other water resources.