||Derivation of Site-Specific Water Quality Criteria for Cadmium and the St. Louis River Basin, Duluth, Minnesota.
Spehar, R. L. ;
Carlson, A. R. ;
||Environmental Research Lab.-Duluth, MN.
Aquatic animals ;
Water pollution ;
Saint Louis River ;
Indicator species ;
Fresh water fishes ;
Water quality data ;
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Several freshwater aquatic species were exposed to cadmium in site and laboratory water to evaluate a protocol recommended by the U.S. Environmental Protection Agency for deriving site-specific water quality criteria. The recalculation, indicator species and resident species procedures of this protocol were used to modify the national cadmium criteria. These procedures were used to account for differences in species sensitivity and in the biological availability and/or toxicity of cadmium due to physical and/or chemical characteristics of the site water.