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Potholes Reservoir: Screening Survey for Dieldrin, Other Chlorinated Pesticides, and PCBs in Fish, Water, and Sediments

Publication number Date Published
10-03-053September 2010
VIEW NOW Potholes Reservoir: Screening Survey for Dieldrin, Other Chlorinated Pesticides, and PCBs in Fish, Water, and Sediments (Number of pages: 99) (Publication Size: 1MB)

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Author(s) Era-Miller, B. and R. Coots
Description During 2007-08, Potholes Reservoir and major inlet wasteways were screened for dieldrin, other chlorinated pesticides, and PCBs in fish, water, and sediments. Dieldrin was the focus of the study.

Contaminant concentrations in fish tissue varied widely depending on fish species, size, and lipid content. Dieldrin, total PCBs, and 4,4’-DDE did not meet EPA National Toxics Rule human health criteria for consumption of fish.

Dieldrin was detected in surface water only during the non-irrigation season (fall). Dieldrin and other contaminants in surface water met water quality criteria.

Dieldrin was not detected in surface sediments; therefore, dieldrin in sediment met Washington State sediment quality guidelines.
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Keywords dieldrin, WRIA 41, toxics, contaminant, fish, 303(d), water, sediment, waste, Washington State Pesticide Monitoring, Washington State Toxics Monitoring, section 303(d), PCBs, pesticide, Potholes Reservoir, lake, Environmental Protection Agency, clean water act
WATERSHED Water Resource Inventory Area 41 Lower Crab
DATA Environmental Information Management (EIM) #BERA0005


Quality Assurance Project Plan: Potholes Reservoir Assessment of Dieldrin and Other Chlorinated Contaminants