Assessement of Water Quality thru Env Monitoring
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11 terms
Terms | Definitions |
|---|---|
 physical integrity | pH, dissolved oxygen |
| chemical integrity | chemical-specific testing (priority pollutant scan), whole effluent toxicity testing |
| biological integrity | direct measurement of resident aquatic communities (fish and aquatic macroinverts) |
| Advantages of directly monitoring bio communities compared to chemical analysis | measure actual impact of discharges on env, detects problems that periodic chem sampling may miss, identifies the effect of unknown chems and altered phys habitats, cost effective |
| biotic community | group of interacting organisms inhabiting a given area |
| tolerant organisms | tolerates a decline in env quality, even declines caused by pollutants |
| intolerant organisms | do not tolerate a decline in env quality; sensitive to changes caused by pollutants |
| reference sites | sites established above the pollution source to determine nature of aquatic community |
| downstream sites | sites established below pollution source (& below mixing zone) to establish the effect of source on the aquatic community |
| CWA Section 101(a) | directs EPA to develop programs "to restore and maintain the chemical, physical and biological integrity of the nations waters" |
| CWA Section 303(c) | requires states to adopt protective water quality standards that consist of uses, criteria and antidegredation |
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