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| Title | A Total Maximum Daily Load Evaluation for Chlorinated Pesticides and PCBs in the Walla Walla River | |||
| Month-Year Published | October 2004 | |||
| Online Availability |
4423 kilobytes, requires version 4.0 or later of Adobe Acrobat Reader Software get Acrobat Reader
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| Short Description |
The Walla Walla River is on the 303(d) list as being water quality limited for 4,4′-DDE, 4,4′-DDD, dieldrin, chlordane, hexachlorobenzene, heptachlor epoxide, and PCB-1260 in edible fish tissue. EPA requires the states to set priorities for cleaning up 303(d) listed waters and to establish a Total Maximum Daily Load (TMDL) for each. This report presents results of a field study that forms the basis for a TMDL evaluation of these chlorinated pesticides, breakdown products, and PCBs in the Walla Walla River drainage. The following TMDL elements are addressed: scope, applicable water quality standards, numerical targets, loading capacity, wasteload and load allocations, margin of safety, seasonal variation, and monitoring plan. (Also see abstract below) | |||
| Publication Number | 04-03-032 | |||
| Author(s) | Johnson, A., B. Era-Miller, R. Coots, and S. Golding | |||
| Print Availability | ||||
| Number of pages | 121 p. + app. (208 p. total) | |||
| Keywords | chlorinated, environmental, Environmental Protection Agency, evaluation, fish, PCBs, pesticide, river, study, Total Maximum Daily Load, waste, water | |||
| Subject Waterbodies |
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| Related Publications | Title | Relationship | ||
| Quality Assurance Project Plan: TMDL Technical Study: Chlorinated Pesticides and PCBs in the Walla Walla River | similar topic | |||
| Abstract | Long Description |
The state of Washington placed the Walla Walla River on the 1996 303(d) list as being water quality limited for 4,4′-DDE, 4,4′-DDD, dieldrin, chlordane, hexachlorobenzene, heptachlor epoxide, and PCB-1260 in edible fish tissue. The U.S. Environmental Protection Agency requires the states to set priorities for cleaning up 303(d) listed waters and to establish a Total Maximum Daily Load (TMDL) for each. A TMDL entails an analysis of how much of a pollutant load a waterbody can assimilate without violating water quality standards. This report presents results of a field study that forms the basis for a TMDL evaluation of these chlorinated pesticides/breakdown products and PCBs in the Walla Walla River drainage. The following TMDL elements are addressed: scope, applicable water quality standards, numerical targets, loading capacity, wasteload and load allocations, margin of safety, seasonal variation, and monitoring plan. |
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