A plan for study of hexavalent chromium, CR(VI) in groundwater near a mapped plume, Hinkley, California, 2016

Izbicki, John A.; Groover, Krishangi D.

doi:10.3133/ofr20161004

Cited by 13 publications

(19 citation statements)

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“…Hydrologic effects of the Mount General Fault Zone are less certain; groundwater steps are not apparent (and fewer data on groundwater levels are available), and the fault is oblique to flow direction of groundwater. The relatively high lateral conductivity of groundwater in Mojave River stream deposits has a direct bearing on plumes of Cr(VI), which were described by Izbicki and Groover (2018). Transport of Cr(VI) from the point of release may be much faster than expected for more typical desert alluvial-fan materials.…”

Section: Deposits Of Water Valleymentioning

confidence: 95%

“…Its crossroads position led to construction of several power-transmission lines, pipeline, and communications cable routes that transect Hinkley Valley. One of these, a natural gas pipeline and its associated compressor station, was the locus of hexavalent chromium, Cr(VI), releases into, and consequent contamination of, groundwater (Izbicki and Groover, 2018). Understanding the movement and fate of the contaminants is a complex hydrologic and geochemical problem.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Geologic map and borehole stratigraphy of Hinkley Valley and vicinity, San Bernardino County, California

Miller¹,

Langenheim²,

Haddon³

2020

Scientific Investigations Map

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Section: Deposits Of Water Valleymentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Geologic map and borehole stratigraphy of Hinkley Valley and vicinity, San Bernardino County, California

Miller¹,

Langenheim²,

Haddon³

2020

Scientific Investigations Map

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“…The updated U.S. Geological Survey (USGS) background study included a series of laboratory microcosm studies designed to determine if Cr is permanently removed from solution by reactions occurring within the IRZ or if future changes in hydrology (for example, large amounts of groundwater recharge from the Mojave River) that result in oxic conditions (dissolved oxygen present) can convert Cr(III) back to Cr(VI) and allow Cr(VI) to re-enter groundwater (chapter A, table A.2). The purpose and scope of the microcosm studies were described by Groover (2016, 2018).…”

Section: I12 Fate Of Chromium During and After In Situ Reductionmentioning

confidence: 99%

“…The purpose of this chapter was to evaluate the fate of Cr during and after in situ reduction and determine if Cr within the IRZ may reoxidize or is permanently removed from groundwater (chapter A, Task 8, table A.2). The experiments were previously described by Groover (2016, 2018). The U.S. Geological Survey was requested by the Lahontan Regional Water Quality Control Board (RWQCB) to do these experiments as part of the updated Cr(VI) background study.…”

Section: I13 Purpose and Scopementioning

confidence: 99%

Sequestration and reoxidation of chromium in experimental microcosms

Miller¹,

Bobb²,

Foster³

et al. 2023

Professional Paper

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This study was developed by the U.S. Geological Survey (USGS) with input from a technical working group (TWG) composed of community members, the Lahontan Regional Water Quality Control Board (RWQCB), the Independent Review Panel Manager (Project Navigator, Ltd.), Pacific Gas and Electric Company (PG&E), and consultants for PG&E. The study was funded cooperatively under an agreement between the Lahontan RWQCB and the USGS. Funding for the study was provided by PG&E to the Lahontan RWQCB. Logistical support for field work, including access to wells, was provided by PG&E. The TWG met approximately quarterly during the study to provide input to the study, and the Hinkley community was updated annually on study progress.The authors thank the many people involved in the design and implementation of this study including the staff of the Lahontan RWQCB, the staff of PG&E and their consultants, and the staff of Project Navigator, Ltd. Specifically the authors thank Margie Gentile of ARCADIS and Betsy Brunswick of PG&E for discussions in preparation for our experiments and Iain Baker and Kevin Sullivan of PG&E for providing the core material from SA-SB-01. The authors thank Doug Choy (USGS, Menlo Park, California) of the Reston Stable Isotope Laboratory for organic carbon analysis. The authors also acknowledge and thank the many involved community members who collectively donated thousands of hours on behalf of the local community in support of this project and for resolution of other issues related to anthropogenic hexavalent chromium, Cr(VI), within the Hinkley area.

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“…Groundwater-age data and Cr(VI) concentrations downgradient from the Hinkley compressor station were compared to simulated particle-track data calculated using the HCBSM (Jacobs Engineering Group, Inc., 2019). The purpose of these comparisons was to determine if HCBSM results could be used to refine estimates of anthropogenic Cr(VI) extent and the summative-scale Cr(VI) plume extent using an iterative process described by Groover (2016, 2018). Repeating published model documentation was beyond the scope of this work and readers are referred to Jacobs Engineering Group, Inc. ( 2019), for details of model construction, calibration, and particle-track calculations.…”

Section: Hinkley Valley Groundwater-flow Modelsmentioning

confidence: 99%

Predevelopment water levels, groundwater recharge, and selected hydrologic properties of aquifer materials, Hinkley and Water Valleys, California

Groover¹,

Izbicki²,

Seymour³

et al. 2023

Professional Paper

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This study was developed by the U.S. Geological Survey (USGS) with input from a technical working group (TWG) composed of community members, the Lahontan Regional Water Quality Control Board (RWQCB), the Independent Review Panel Manager (Project Navigator, Ltd.), Pacific Gas and Electric Company (PG&E), and consultants for PG&E. The study was funded cooperatively under an agreement between the Lahontan RWQCB and the USGS. Funding for the study was provided by PG&E to the Lahontan RWQCB. Logistical support for field work, including access to wells, was provided by PG&E. The TWG met approximately quarterly during the study to provide input to the study, and the Hinkley community was updated annually on study progress.The authors thank the many people involved in the design and implementation of this study including the staff of the Lahontan RWQCB, the staff of PG&E and their consultants, and the staff of Project Navigator, Ltd. The authors also acknowledge and thank the many involved community members who allowed access to their properties for sample collection, and who collectively donated thousands of hours on behalf of the local community in support of this project and for resolution of other issues related to anthropogenic hexavalent chromium, Cr(VI), within the Hinkley area.

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A plan for study of hexavalent chromium, CR(VI) in groundwater near a mapped plume, Hinkley, California, 2016

Cited by 13 publications

References 0 publications

Geologic map and borehole stratigraphy of Hinkley Valley and vicinity, San Bernardino County, California

Geologic map and borehole stratigraphy of Hinkley Valley and vicinity, San Bernardino County, California

Sequestration and reoxidation of chromium in experimental microcosms

Predevelopment water levels, groundwater recharge, and selected hydrologic properties of aquifer materials, Hinkley and Water Valleys, California

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