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  • An Independent Scientific Assessment of Well Stimulation in California Volume II: Potential Environmental Impacts of Hydraulic Fracturing and Acid Stimulations

    An Independent Scientific Assessment of Well Stimulation in California Volume II: Potential Environmental Impacts of Hydraulic Fracturing and Acid Stimulations

    California Council on Science and Technology (CCST) | July 1, 2015...
    Summary

    In 2013, the California Legislature passed Senate Bill 4 (SB 4), setting the framework for regulation of well stimulation technologies in California, including...

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  • Base of fresh ground water (approximately 3,000 micromhos) in the San Joaquin Valley, California

    Base of fresh ground water (approximately 3,000 micromhos) in the San Joaquin Valley, California

    U.S. Geological Survey (USGS) | June 30, 1971...
    Summary

    Widespread pumping of groundwater in the San Joaquin Valley began about 1900, and since 1940 pumpage has increased at an accelerated rate. In...

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  • Groundwater salinity in the southern San Joaquin Valley

    Groundwater salinity in the southern San Joaquin Valley

    The American Association of Petroleum Geologists | August 1, 2018...
    Summary

    Water salinity in the San Joaquin Valley is a function of depth, location, and stratigraphy. This paper presents a reconnaissance study of water...

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  • Groundwater salinity mapping using geophysical log analysis within the Fruitvale and Rosedale Ranch oil fields, Kern County, California, USA

    Groundwater salinity mapping using geophysical log analysis within the Fruitvale and Rosedale Ranch oil fields, Kern County, California, USA

    Hydrogeology Journal | September 26, 2018...
    Summary

    A method is presented for deriving a volume model of groundwater total dissolved solids (TDS) from borehole geophysical and aqueous geochemical measurements. While...

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  • High Resolution Measurement of Levee Subsidence Related to Energy Infrastructure in the Sacramento-San Joaquin Delta

    High Resolution Measurement of Levee Subsidence Related to Energy Infrastructure in the Sacramento-San Joaquin Delta

    California Energy Commission (CEC) | August 31, 2018...
    Summary

    We assess flood overtopping potential (when flood water elevation exceeds levee elevation) to the levees surrounding the islands in the interior of California's...

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  • Hydraulic fracturing in faulted sedimentary basins: Numerical simulation of potential contamination of shallow aquifers over long time scales

    Hydraulic fracturing in faulted sedimentary basins: Numerical simulation of potential contamination of shallow aquifers over long time scales

    American Geophysical Union (AGU) | December 12, 2013...
    Summary

    Hydraulic fracturing, used to economically produce natural gas from shale formations, has raised environmental concerns. The objective of this study is to assess one...

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  • Inorganic, isotopic, and organic composition of high-chloride water from wells in a coastal southern California aquifer

    Inorganic, isotopic, and organic composition of high-chloride water from wells in a coastal southern California aquifer

    Applied Geochemistry, Elsevier | August 1, 2005...
    Summary

    Chloride concentrations were as high as 230 mg/L in water from the surface discharge of long-screened production wells in Pleasant Valley, Calif., about 100 km...

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  • Occurrence and sources of radium in groundwater associated with oil fields in the southern San Joaquin Valley, California

    Occurrence and sources of radium in groundwater associated with oil fields in the southern San Joaquin Valley, California

    American Chemical Society (ACS) | August 7, 2019...
    Summary

    Geochemical data from 40 water wells were used to examine the occurrence and sources of radium (Ra) in groundwater associated with three oil...

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  • Organic geochemistry and toxicology of a stream impacted by unconventional oil and gas wastewater disposal operations

    Organic geochemistry and toxicology of a stream impacted by unconventional oil and gas wastewater disposal operations

    Applied Geochemistry, Elsevier | March 10, 2017...
    Summary

    The large volume of wastewater produced during unconventional oil and gas (UOG) extraction is a significant challenge for the energy industry and of...

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  • Potential Impacts of Future Geological Storage of CO2 on the Groundwater Resources in California’s Central Valley: Southern San Joaquin Basin Oil and Gas Production Analog for Geologic Carbon Storage

    Potential Impacts of Future Geological Storage of CO2 on the Groundwater Resources in California’s Central Valley: Southern San Joaquin Basin Oil and Gas Production Analog for Geologic Carbon Storage

    California Energy Commission (CEC) | May 1, 2013...
    Summary

    This study investigated the potential impacts of the injection and storage of large quantities of carbon dioxide on shallow water resources in California’s...

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