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Groundwater Quality Data for the Northern Sacramento Valley, 2007: Results from the California GAMA Program

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Groundwater Quality Data for the Northern Sacramento Valley, 2007: Results from the California GAMA Program Prepared in cooperation with the California State Water Resources Control Board A product of the California Groundwater Ambient Monitoring and Assessment (GAMA) Program Groundwater Quality Data for the Northern Sacramento Valley, 2007: Results from the California GAMA Program SHASTA CO Redding 5 Red Bluff TEHAMA CO Data Series 452 U.S. Department of the Interior U.S. Geological Survey Cover Photographs: Top: View looking down the fence line, 2008. (Photograph taken by Michael Wright, U.S. Geological Survey.) Bottom: A well/pump in a field, 2008. (Photograph taken by George Bennett, U.S. Geological Survey.) Groundwater Quality Data for the Northern Sacramento Valley, 2007: Results from the California GAMA Program By Peter A. Bennett, George L. Bennett V, and Kenneth Belitz In cooperation with the California State Water Resources Control Board Data Series 452 U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior KEN SALAZAR, Secretary U.S. Geological Survey Suzette M. Kimball, Acting Director U.S. Geological Survey, Reston, Virginia: 2009 For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment, visit http://www.usgs.gov or call 1-888-ASK-USGS For an overview of USGS information products, including maps, imagery, and publications, visit http://www.usgs.gov/pubprod To order this and other USGS information products, visit http://store.usgs.gov Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted materials contained within this report. Suggested citation: Bennett, P.A., Bennett, G.L., V, Belitz, Kenneth, 2009, Groundwater quality data for the northern Sacramento Valley, 2007: Results from the California GAMA program: U.S. Geological Survey Data Series 452, 90 p. iii Contents Abstract ..........................................................................................................................................................1 Introduction ....................................................................................................................................................2 Purpose and Scope ..............................................................................................................................4 Hydrogeologic Setting ........................................................................................................................4 Redding Study Area .....................................................................................................................4 Northern Sacramento Valley Study Area ................................................................................7 Methods ..........................................................................................................................................................7 Study Design ..........................................................................................................................................7 Sample Collection and Analysis .........................................................................................................9 Data Reporting.......................................................................................................................................9 Quality Assurance.................................................................................................................................9 Water Quality Results ...................................................................................................................................9 Quality-Control Results ........................................................................................................................9 Comparison Thresholds .....................................................................................................................10 Groundwater Quality Data .................................................................................................................11 Field Water-Quality Indicators .................................................................................................11 Organic Constituents .................................................................................................................12 Constituents of Special Interest ..............................................................................................12 Inorganic Constituents ..............................................................................................................12 Isotopic Tracers and Noble Gases ..........................................................................................13 Radioactive Constituents ..........................................................................................................13 Microbial Indicators ..................................................................................................................13 Future Work .........................................................................................................................................14 Summary .......................................................................................................................................................14 Acknowledgments .......................................................................................................................................15 References ...................................................................................................................................................15 Tables ...........................................................................................................................................................20 Appendix .......................................................................................................................................................64 iv Figures 1–4. Maps showing: 1. Map of the hydrogeologic provinces of California and the location of the Northern Sacramento Valley Groundwater Ambient Monitoring and Assessment (GAMA) study unit ........................................................................................................................3 2. Map of the Northern Sacramento Valley Groundwater Ambient Monitoring and Assessment (GAMA) study unit showing the California Department of Water Resources groundwater basins within the study unit and major hydrologic features ..........................................................................................................................................5 3. Map of the Northern Sacramento Valley Groundwater Ambient Monitoring and Assessment (GAMA) study unit showing the 1.86-mile buffer zones around the public-supply wells, the distribution of study area grid cells, and the locations of sampled grid wells ........................................................................................................................6 4. Map of the Northern Sacramento Valley Groundwater Ambient Monitoring and Assessment (GAMA) study unit showing the 1.86-mile buffer zones around all public-supply wells, the distribution of study area grid cells, and the locations of sampled understanding wells and monitoring wells .............................................................8 Tables 1. Well Identification, sampling and construction information for wells sampled for the Northern Sacramento Valley Groundwater Ambient Monitoring and Assessment (GAMA) study, California, October 2007 to January 2008 .............................21 2. Classes of chemical and water-quality indicators and microbial constituents collected for the slow, and intermediate well sampling schedules in the Northern Sacramento Valley Groundwater Ambient Monitoring and Assessment (GAMA) study, California, October 2007 to January 2008 ....................................................................23 3A. Volatile organic compounds, primary uses or sources, comparative thresholds, and reporting information for the U.S. Geological Survey (USGS) National Water Quality Laboratory Schedule 2020 .........................................................................................................24 3B. Pesticides and pesticide degradates, primary uses or sources, comparative thresholds, and reporting information for the U.S. Geological Survey (USGS) National Water Quality Laboratory Schedule 2032 ...............................................................27 3C. Polar pesticides and pesticide degradates, primary uses or sources, comparative thresholds, and reporting information for the USGS National Water Quality Laboratory Schedule 2060 .........................................................................................................29 3D. Pharmaceutical compounds, primary uses or sources, comparative thresholds, and reporting information for the U.S. Geological Survey (USGS) National Water Quality Laboratory schedule 2080 ............................................................................................31 3E. Constituents of special interest, primary uses or sources, comparative thresholds, and reporting information for the Weck Laboratory, Inc .....................................................32 3F. Nutrients and dissolved organic carbon, comparative thresholds, and reporting information
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