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National Study of Chemical Residues in Lake Fish Tissue Final Report

April 2011 - Vol. 30

Federal vs. State: Federal

Description: The National Study of Chemical Residues in Lake Fish Tissue is the largest national freshwater fish contamination survey EPA has conducted to date, and it is the first national fish contamination study with sampling sites selected according to a statistical design. Over a period of 4 years (2000-2003), fish were collected from 500 lakes and reservoirs in the lower 48 states. The fish samples (one predator composite and one bottom dweller composite from each site) were analyzed for 268 persistent, bioaccumulative, and toxic (PBT) chemicals, and the results used to develop national estimates of mean concentrations of these chemicals in fish. The statistical design of the study also provides the basis for estimating the percentage of lakes and reservoirs across the country with fish tissue concentrations above or below levels of concern for human or ecosystem health. The final report will summarize the sampling design and present the statistical analysis of the cumulative 4-year fish contamination data set.

Contact Information:
- AAship: Office of Water
- EPA Office/Organization: Office of Water/Office of Science and Technology
Leanne Stahl, 202-566-0404, 202-566-0409 (FAX),

Expected Release: Winter 2009

Comment Period: None available
Stakeholder/Public Involvement Method(s): Forum(s)/Workshop(s), Stakeholder or expert consultation
How to Access Draft Product: www.epa.gov/waterscience/fishstudy/

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