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National dioxin study

Fish and Wildlife. A survey of 2,3,7,8-TCDD contamination in benthic (bottom feeding) and predator fish from major U.S. watersheds was conducted for the EPA National Dioxin Study (Kuehl et al. 1989). It was observed that 17 of 90 (19%) samples collected at sites statistically selected by the EPA had detectable levels of 2,3,7,8-TCDD, whereas 95 of 305 (31%) samples from sites chosen by EPA regional laboratories had detectable levels (detection limits 0.5-2 ppt on a wet weight basis). Of the 112 sites where 2,3,7,8-TCDD was detected, 74 samples (67%) were below 5 ppt, 34 samples (32%) were between 5 and 25 ppt, and 4 samples (1%) were above 25 ppt. A subset of samples collected at sites near the discharges from pulp/paper manufacturing facilities (n=28) had a higher frequency of... [Pg.480]

Travis and Hattemer-Frey (1991) analyzed data collected as part of the National Dioxin Study regarding... [Pg.480]

EPA. 1987n. The National Dioxin Study Tiers 3,5,6, and 7. Office of Water Regulations and Standards. Washington DC EPA 440/4-87-003. [Pg.612]

Kuykendal WB, Lamason WH, Miles AJ, et al. 1989. Ash data from combustion sources Results of tier 4 of the national dioxin study. Chemosphere 18 1227-1234. [Pg.645]

US Environmental Protection Agency, National Dioxin Study, EPA/530-SW-87-025, Office of Solid Waste and Emergency Response, Washington, 1987. [Pg.18]

Hartman M (1984), EPA 450/4-84/-041C.. .National Dioxin Study Tier 4 - Combustion Sources Sampling Procedures" United States Environmental Protection Agency, Washington... [Pg.157]

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