Record Display for the EPA National Library Catalog
RECORD NUMBER: 33 OF 79| Main Title | Margins of Safety for Aquatic Communities. | |||||||||||
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| Author | Mount, D. I. ; | |||||||||||
| CORP Author | Environmental Research Lab.-Duluth, MN. | |||||||||||
| Year Published | 1981 | |||||||||||
| Report Number | EPA-600/D-82-310; | |||||||||||
| Stock Number | PB82-223876 | |||||||||||
| Additional Subjects | Toxicology ; Concentration(Composition) ; Water pollution ; Variability ; Errors ; Safety ; Decision making ; Aquatic biology ; Toxic substances | |||||||||||
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| Collation | 7p | |||||||||||
| Abstract | The margin of safety is the difference between the expected effect concentrations and the expected ambient concentrations. Two sources of variability, error in the test data and unknown information, necessitate a margin of safety. Inclusion of site-specific considerations can substantially reduce needed margins. The choice of the appropriate confidence level should be based on the importance of the decision and not on habit. |