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For all tributaries and the river, PCB concentrations measured were above the EPA Water Quality Criteria for Human Health protection for the consumption of water and organisms (0.064 ng/L; at 1 in a million incremental risk of cancer) throughout the seasons.", "geometryType": "esriGeometryPoint", "sourceSpatialReference": { "wkid": 102100, "latestWkid": 3857, "xyTolerance": 0.001, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -20037700, "falseY": -30241100, "xyUnits": 10000, "falseZ": -100000, "zUnits": 10000, "falseM": 0, "mUnits": 1 }, "copyrightText": "Upal Ghosh, Nathalie Lombard, Mandar Bokare University of Maryland Baltimore County Department of Chemical, Biochemical and Environmental Engineering Baltimore, MD\n\nAlfred Pinkney U.S. Fish and Wildlife Service Chesapeake Bay Field Office Annapolis, MD \n\nLance Yonkos, Rachel Harrison University of Maryland College Park Department of Environmental Science and Technology College Park, MD", "parentLayer": { "id": 20, "name": 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