United States v. E.I. Du Pont de Nemours & Co., No. 1:11-cv-01057-UNA (D. Del. Oct. 31, 2011). A settling CWA defendant responsible for violations at its titanium dioxide production facility in Edge Moor, Delaware, must pay a $500,000 civil penalty to the United States and Delaware and must perform a comprehensive engineering study of the wastewater treatment plant and its collection system.

EPA announced a final NPDES general permit for point source discharges from the application of pesticides to waters of the United States.

EPA Region 10 issued effluent limits for six substances under the NPDES general permit for oil and gas exploration, development, and production facilities in state and federal waters in Cook Inlet, Alaska.

SIP Proposal: Virginia (expiration of nitrogen oxide budget trading program).

SIP Proposal: Pennsylvania (conditional approval of attainment of the 1997 fine particulate matter NAAQS for the Liberty-Clairton nonattainment area).

SIP Approval: Virginia (expiration of nitrogen oxide budget trading program.

EPA determined that the coal-fired Portland generating station in Northampton County, Pennsylvania, is emitting air pollutants that impact New Jersey in violation of the interstate transport provisions of the CAA and established limitations and compliance schedules to reduce sulfur dioxide emissions. 

EPA entered into an administrative settlement under CERCLA for U.S. response costs incurred at the BCX Tank Superfund site in Jacksonville, Florida. 

SIP Proposal: Pennsylvania (emission standards for light-duty vehicles).

SIP Proposal: New Mexico (permit fee regulations) 76 FR 68385 (11/4/11).