Record Display for the EPA National Library Catalog
RECORD NUMBER: 493 OF 636
|OLS Field Name||OLS Field Data|
|Main Title||Role of Biological Assessment in Effluent Control.|
|Author||Mount, D. I. ;|
|CORP Author||Environmental Research Lab.-Duluth, MN.|
|Additional Subjects||Toxicity ; Water pollution control ; Streams ; Tests ; Cost effectiveness ; Aquatic animals ; Aquatic plants ; Environmental impacts ; Measurement ; Evaluation ;|
The U.S. Environmental Protection Agency issued a water-quality based policy in March, 1984 which includes control of toxicity in effluents if receiving water impact occurs. Toxicity tests can be used to measure toxicity, estimate additional removal necessary to avoid impact, establish permit limits and for compliance monitoring. Toxicity tests are a direct measure of the effect for which control is sought and often are cheaper than chemical analyses.