Browsing by Author "Embrey, Sandra S."
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Item Pesticides in surface water of the yakima river basin, washington, 1999–2000—their occurrence and an assessment of factors affecting concentrations and loads(Washington State Dept. of Ecology, 2002) Ebbert, James C.; Embrey, Sandra S.The occurrence, distribution, and transport of pesticides in surface water of the Yakima River Basin were assessed using data collected during 1999–2000 as part of the U.S. Geological Survey National Water-Quality Assessment (NAWQA) Program. Samples were collected at 34 sites located throughout the basin in August 1999 using a Lagrangian sampling design. Samples also were collected weekly and monthly from May 1999 through January 2000 at three of the sites. This report includes data for 47 pesticide compounds from the analysis of filtered water using ocadecyl (C-18) solid-phase extraction and gas chromatography/ mass spectrometry.Item Water Quality in the Yakima River Basin, Washington, 1999-2000(U.S. Geological Survey, 2004) Fuhrer, Gregory J.; Morace, Jennifer L.; Johnson, Henry M.; Rinella, Joseph F.; Ebbert, James C.; Embrey, Sandra S.; Waite Ian R., Ian R.; Carpenter, Kurt D.; Wise, Daniel R.; Hughes, Curt A.This report contains the major findings of a 1999–2000 assessment of water quality in streams and drains in the Yakima River Basin. It is one of a series of reports by the NAWQA Program that present major findings on water resources in 51 major river basins and aquifer systems across the Nation. In these reports, water quality is assessed at many scales—from large rivers that drain lands having many uses to small agricultural watersheds—and is discussed in terms of local, State, and regional issues. Conditions in the Yakima River Basin are compared to those found elsewhere and to selected national benchmarks, such as those for drinking-water quality and the protection of aquatic organisms.