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Accession Number PB2013-105716
Title Reconnaissance of Land-Use Sources of Pesticides in Drinking Water McKenzie River, Oregon.
Publication Date 2012
Media Count 56p
Personal Author C. W. Anderson K. Morgenstern V. J. Kelly
Abstract The purpose of this report is to identify land-use sources of pesticides in the McKenzie River basin to support source reduction efforts made by EWEB to protect drinking water quality. The approach includes the following objectives: (1) to describe the occurrence of pesticides in the McKenzie River at the EWEB drinking-water intake, as well as in selected small streams and stormwater conveyances that reflect specific categories of land use; (2) to identify the seasonal and climatological factors that are associated with those patterns; and (3) to characterize the relationship between observed pesticide patterns and land use. A particular emphasis is placed on determining if any tributaries or specific land use present a greater threat to drinking water quality in order to more effectively focus future monitoring activity as well as guide the development of management strategies to reduce pesticide runoff. Physical and chemical characteristics of compounds are evaluated to provide insight into compound persistence and likely modes of transport. Concentrations of detected compounds are compared to the U.S. Environmental Protection Agency (USEPA) Maximum Contaminant Levels (MCLs) or USGS Health-Based Screening Levels (HBSLs) to assess known or suspected threats to human health from drinking water. This report also assesses the potential threat of endocrine disruption from detected compounds. Results are synthesized with current findings from other studies to generate a conceptual model of pesticide transport in the basin, which essentially represents a set of hypotheses to be evaluated with future data collection.
Keywords Chemical compounds
Drinking water
Land use
McKenzie River
Potable water
Water quality

Source Agency US Geological Survey
NTIS Subject Category 68D - Water Pollution & Control
68E - Pesticides Pollution & Control
48C - Natural Resource Surveys
48G - Hydrology & Limnology
Corporate Author Geological Survey, Reston, VA.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1312
Contract Number N/A

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