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Pyrethroids in Freshwater Sediments of King County

Publication number Date Published
11-03-061November 2011
VIEW NOW Pyrethroids in Freshwater Sediments of King County (Number of pages: 44) (Publication Size: 1MB)

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Author(s) Anderson, P.
Description A screening level study was conducted in December 2010 to evaluate the occurrence and magnitude of pyrethroids in sediments from an urbanized area in the Puget Sound basin.

The most frequently detected compound was bifenthrin which was detected in 8 of the 20 sites sampled. In several instances bifenthrin and lambda-cyhalothrin levels were above toxicological endpoints which would indicate a potential for adverse impacts to sediment-dwelling organisms.

Further research is recommended to fully evaluate the occurrence of pyrethroids and the potential for biological impacts.
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Keywords creek, urban, basin, toxic, Puget Sound, freshwater sediment
WATERSHED Water Resource Inventory Areas
(WRIA 08,WRIA 09)
DATA Environmental Information Management (EIM) #PAND0003


Quality Assurance Project Plan: Pyrethroids in Freshwater Sediments of King County