Total Maximum Daily Load for Settleable Solid Residues in the Waters of Udagak Bay of Beaver Inlet, Alaska

摘要

Section 303(d)(1)(C) of the Clean Water Act (CWA) and the U.S. Environmental Protection Agency's (EPA) implementing regulations (40 CFR Part 130) require the establishment of a Total Maximum Daily Load (TMDL) for the achievement of state water quality standards when a waterbody is water quality-limited. A TMDL identifies the degree of pollution control needed to maintain compliance with standards using an appropriate margin of safety. The focus of the TMDL is the reduction of pollutant inputs to a level (or 'load') that fully supports the designated uses of a given waterbody. The mechanisms used to address water quality problems after the TMDL is developed can include best management practices and/or effluent limits and monitoring required under National Pollutant Discharge Elimination System (NPDES) permits.