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Science & Technology

Region 4 Virtual Reading Room - Circle Environmental #1 and #2

Frequently requested FOIA documentation for EPA region 4
Corps Renders Record of Decision on PCS Phosphate Permit Application

Contains press release on USACE rendering the ROD & permit for the PCS Phosphate Corporation to expand mining operations in Beaufort County, North Carolina, June 3, 2009
Comments on Draft Technical Support Document for Endangerment Analysis for Greenhouse Gas Emissions under the Clean Air Act

Comments on Draft Technical Support Document for Endangerment Analysis for Greenhouse Gas Emissions under the Clean Air Act
Water Quality Standards: Delaware River

On December 13, 2023, EPA signed a proposed rule to revise the aquatic life designated use and dissolved oxygen water quality criteria applicable to Zone 3, Zone 4, and the upper portion of Zone 5 of the Delaware River.
Columbia River Basin Contaminants of Concern Framework

Framework developed by the Columbia River Basin Restoration Working Group to guide collaboration and implementation of toxics monitoring and reduction efforts across the Columbia River Basin.
WST109

Woodstock (WST109) CASTNET site location,
WSP144

Washington Crossing (WSP144) CASTNET site location,
WFM105

Whiteface Mountain (WFM105) CASTNET site location,
VIN140

Vincennes (VIN140) CASTNET site location,
UVL124

Unionville (UVL124) CASTNET site location,
UMA009

Confederated Tribes of the Umatilla Indian Reservation (UMA009) CASTNET site location,
SUM156

Sumatra (SUM156) CASTNET site location,
STK138

Stockton (STK138) CASTNET site location,
SPD111

Speedwell (SPD111) CASTNET site location,
SND152

Sand Mountain (SND152) CASTNET site location,
SAN192

Santee Sioux Nation, Nebraska (SAN189) CASTNET site location,
SAL133

Salamonie Reservoir (SAL133) CASTNET site location,
ROM406

Rocky Mtn National Park (ROM406) CASTNET site location,
ROM206

Rocky Mtn National Park Collocated (ROM206) CASTNET site location,
RED004

Red Lake Band of Chippewa Indians, Minnesota (RED004) CASTNET site location,

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