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Willamette Basin Stream Survey
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Geological Survey (U.S.)
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Bioaccumulation
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Chemical analysis
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Chromium
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Ecological concentration
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Metals
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Nickel
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Thematic Classification -- Water and Air -- Water Quality
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1. [Article] Selected elements and organic chemicals in bed sediment and fish tissue of the Tualatin River Basin, Oregon, 1992-96
The U.S. Geological Survey (USGS) has worked cooperative with the Unified Sewerage Agency of Washington County (USA) since 1990 to assess water quality in the Tualatin River Basin. The objectives of this ...Citation