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Pesticides in Streams of the United States--Initial Results from the National Water-Quality Assessment Program

By Steven J. Larson, Robert J. Gilliom, and Paul D. Capel

U.S. GEOLOGICAL SURVEY
Water-Resources Investigations Report 98-4222
Sacramento, California, 1999


Figure 37
Figure 37. Concentrations of diazinon at five sites. The aquatic-life criterion value of 0.08 microgram per liter established by the International Joint Commission is shown as a horizontal line. Concentrations reported as not detected were assigned a value of zero.


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