EPA Region 10 reproposed effluent limits for mercury, copper, total aromatic hydrocarbons, total aqueous hydrocarbons, silver, and whole effluent toxicity under the NPDES general permit for oil and gas exploration, development, and production facilities in Cook Inlet, Alaska.

The U.S. Army Corps of Engineers proposed to authorize Natural Resources Conservation Service-approved categorical exclusions for recurring conservation, restoration, and survey-related activities in waters of the United States.

EPA and the U.S. Army Corps of Engineers seek public comment on proposed guidance to identify waters protected by the FWPCA consistent with the U.S. Supreme Court's SWANNC and Rapanos decisions.

EPA entered into a proposed settlement agreement in Sierra Club v. U.S. Environmental Protection Agency, No. 2:10-cv-01872-RSL (W.D. Wash.), that establishes a deadline for the Agency to respond to a petition seeking its objection to a CAA Title V operating permit for a coal-fired power plant in Centralia, Washington.

NOAA-Fisheries announced a 90-day finding on a petition to revise critical habitat for the endangered leatherback sea turtle off the northeast ecological corridor of Puerto Rico; the agency found that revision may be warranted.

SIP Proposal: Wyoming (attainment of the 1997 ozone NAAQS).

SIP Proposal: Virginia (revisions to PSD permit program).

SIP Proposal: Utah (attainment of the 1997 ozone NAAQS)

SIP Plan: South Dakota (approval of 1997 ozone NAAQS)

SIP Plan: Pennsylvania (NOx emissions from Portland cement kilns).