Browsing Oregon Explorer by Author "Washington County (Or.). Unified Sewerage Agency."

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Selected elements and organic chemicals in bed sediment and fish tissue of the Tualatin River Basin, Oregon, 1992-96

Bonn, Bernadine A.; Washington County (Or.). Unified Sewerage Agency.; Geological Survey (U.S.) (U.S. Dept. of the Interior, U.S. Geological Survey ; Information Services, 1999)

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 study were to: a ...