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U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2008–5027

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Table 9. Potential human-health effects of select pesticides detected in the lower Clackamas River basin, Oregon, 2000–2005.

Type: H, herbicide; I, insecticide; F, fungicide; N, nematocide; M, molluscicide. Carcinogen group: carcinogen classification from USEPA (2006) as follows: B2, Sufficient evidence in animals and inadequate or no evidence in humans to classify as a probable human carcinogen; C, Possible human carcinogen; D, Not classifiable as to human carcinogenicity; E, Evidence of noncarcinogenicity for humans; L, Likely to be carcinogenic to humans; N, Not likely to be carcinogenic to humans. Endocrine disruptor: Draft List of Initial Pesticide Active Ingredients and Pesticide Inerts to be Considered for Screening under the Federal Food, Drug, and Cosmetic Act (U.S. Environmental Protection Agency, 2007). Cholinesterase inhibitor: Extoxnet (1993). Symbol: #, pesticide not detected since 2000–2001]

¹ Ethoprop is a likely carcinogen (USEPA, http://www.epa.gov/oppsrrd1/REDs/ethoprop_ired.pdf, accessed July 10, 2007), U.S. Environmental Protection Agency (1999b).

² USEPA (http://www.epa.gov/oppsrrd1/REDs/propiconazole_red.pdf, accessed July 10, 2007).

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