Record Display for the EPA National Library Catalog

RECORD NUMBER: 47 OF 234

OLS Field Name OLS Field Data
Main Title Derivation of Site-Specific Water Quality Criteria for Cadmium and the St. Louis River Basin, Duluth, Minnesota.
Author Spehar, R. L. ; Carlson, A. R. ;
CORP Author Environmental Research Lab.-Duluth, MN.
Year Published 1984
Report Number EPA-600/3-84-029;
Stock Number PB84-153196
Additional Subjects Cadmium ; Toxicity ; Aquatic animals ; Water pollution ; Saint Louis River ; Larvae ; Fresh water fishes ; Exposure ; Tests ; Indicator species ; Trout ; Minnows ; Turbidity ; Color ; Temperature ; Nitrogen ; Phosphorus ; Metals ; Tables(Data) ; Sensitivity ; Water quality data
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB84-153196 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 61p
Abstract
Several freshwater aquatic species were exposed to cadmium in site and laboratory water to evaluate an 'organism testing' protocol proposed by the U.S. Environmental Protection Agency for deriving site-specific, water quality criteria. The procedures of reclaculation, indicator species, and resident species were used in this protocol to modify the national maximum and 30-day average cadmium criteria. The site-specific, maximum concentration derived from the recalculation procedure was slightly lower than the national criterion value. The maximum concentration derived from the indicator species procedures was 7.0 micrograms/l and was calculated by using a water effect ratio from tests conducted in both site and laboratory water. Acute tests with several species demonstrated that cadmium was less toxic in site water than in laboratory water. Acute tests conducted monthly in site water showed that cadmium toxicity varied by more than a factor of three over the year.