Publications
This list of Water Resources Mission Area publications includes both official USGS publications and journal articles authored by our scientists. A searchable database of all USGS publications can be accessed at the USGS Publications Warehouse.
Filter Total Items: 19054
Sequestration and reoxidation of chromium in experimental microcosms Sequestration and reoxidation of chromium in experimental microcosms
Groundwater containing hexavalent chromium, Cr(VI), downgradient from the Pacific Gas and Electric Company (PG&E) Hinkley compressor station in the Mojave Desert, 80 miles northeast of Los Angeles, California, is undergoing bioremediation using added ethanol as a reductant in a volume of the aquifer defined as the in situ reactive zone (IRZ). This treatment reduces Cr(VI) to trivalent...
Authors
Laurence G. Miller, Callum E. Bobb, Andrea L. Foster, Emily G. Wright, Stacy C. Bennett, Krishangi D. Groover, John A. Izbicki
Predevelopment water levels, groundwater recharge, and selected hydrologic properties of aquifer materials, Hinkley and Water Valleys, California Predevelopment water levels, groundwater recharge, and selected hydrologic properties of aquifer materials, Hinkley and Water Valleys, California
Hydrologic and geophysical data were collected to support updates to an existing groundwater-flow model of Hinkley Valley, California, in the Mojave Desert about 80 miles northeast of Los Angeles, California. These data provide information on predevelopment (pre-1930) water levels, groundwater recharge, and selected hydrologic properties of aquifer materials. A predevelopment groundwater...
Authors
Krishangi D. Groover, John A. Izbicki, Whitney A. Seymour, Anthony A. Brown, Randall E. Bayless, Carole D. Johnson, Katherine L. Pappas, Gregory A. Smith, Dennis A. Clark, Joshua Larsen, Meghan C. Dick, Lorraine E. Flint, Christina L. Stamos, John G. Warden
Evaluation of natural and anthropogenic (human-made) hexavalent chromium Evaluation of natural and anthropogenic (human-made) hexavalent chromium
Hexavalent chromium, Cr(VI), was released between 1952 and 1964 from the Pacific Gas and Electric Company (PG&E) Hinkley compressor station, in the Mojave Desert about 80 miles northeast of Los Angeles, California. Geologic, geochemical, and hydrologic data from more than 100 wells collected between March 2015 and November 2017 were interpreted using a summative-scale analysis to define...
Authors
John A. Izbicki, John G. Warden, Krishangi D. Groover, Whitney A. Seymour
Environmental tracers of groundwater source, age, and geochemical evolution Environmental tracers of groundwater source, age, and geochemical evolution
Hexavalent chromium, Cr(VI), was discharged in cooling wastewater to unlined surface ponds from 1952 to 1964 and reached the underlying unconsolidated aquifer at the Pacific Gas and Electric Company (PG&E) Hinkley compressor station in the Mojave Desert, 80 miles northeast of Los Angeles, California. A suite of environmental tracers was analyzed in water samples collected from more than...
Authors
John G. Warden, John A. Izbicki, Jurgen Sultenfuss, Kathleen Scheiderich, John Fitzpatrick
Groundwater chemistry and hexavalent chromium Groundwater chemistry and hexavalent chromium
Water samples collected by the U.S. Geological Survey from more than 100 wells between March 2015 and November 2017 in Hinkley and Water Valleys, in the Mojave Desert 80 miles northeast of Los Angeles, California, were analyzed for field parameters, major ions, nutrients, and selected trace elements, including hexavalent chromium, Cr(VI). Water from most wells was alkaline and oxic. The...
Authors
John A. Izbicki, R. Blaine McCleskey, Carmen A. Burton, Dennis A. Clark, Gregory A. Smith
Analyses of regulatory water-quality data Analyses of regulatory water-quality data
Between 1952 and 1964, hexavalent chromium, Cr(VI), was released into groundwater from the Pacific Gas and Electric Company (PG&E) Hinkley compressor station in the Mojave Desert 80 miles northeast of Los Angeles, California. The Pacific Gas and Electric Company has monitored groundwater near Hinkley, California, for Cr(VI) and other constituents since the late 1980s. By June 2017, more...
Authors
John A. Izbicki, Whitney A. Seymour
Chromium in minerals and selected aquifer materials Chromium in minerals and selected aquifer materials
Between 1952 and 1964, hexavalent chromium, Cr(VI), was released into groundwater from a Pacific Gas and Electric Company (PG&E) compressor station in Hinkley, California, in the western Mojave Desert 80 miles northeast of Los Angeles, California. In 2015, the extent of anthropogenic Cr(VI) in groundwater in Hinkley and Water Valleys was uncertain, but some Cr(VI) in groundwater may be...
Authors
Krishangi D. Groover, John A. Izbicki, William Benzel, Jean M. Morrison, Andrea L. Foster
Survey of chromium and selected element concentrations in rock, alluvium, and core material Survey of chromium and selected element concentrations in rock, alluvium, and core material
Between 1952 and 1964, hexavalent chromium, Cr(VI), was released into groundwater from the Pacific Gas and Electric Company (PG&E) compressor station in Hinkley, California, in the western Mojave Desert 80 miles northeast of Los Angeles, California. In 2015, the extent of anthropogenic Cr(VI) in groundwater in Hinkley and Water Valleys was uncertain, and some Cr(VI) in groundwater may be...
Authors
John A. Izbicki, Krishangi D. Groover
Introduction to study area hydrogeology, chromium sources, site history, and purpose of study Introduction to study area hydrogeology, chromium sources, site history, and purpose of study
Between 1952 and 1964, hexavalent chromium, Cr(VI), was released into groundwater from the Pacific Gas and Electric Company (PG&E) Hinkley compressor station in the Mojave Desert 80 miles (mi) northeast of Los Angeles, California. Remediation began in 1992, and in 2010, site cleanup was projected to require between 10 and 95 years and was expected to cost between $36 and $176 million. A...
Authors
John A. Izbicki, Krishangi D. Groover, David M. Miller, Whitney A. Seymour, John G. Warden, Laurence G. Miller
Natural and anthropogenic (human-made) hexavalent chromium, Cr(VI), in groundwater near a mapped plume, Hinkley, California Natural and anthropogenic (human-made) hexavalent chromium, Cr(VI), in groundwater near a mapped plume, Hinkley, California
Between 1952 and 1964, hexavalent chromium, Cr(VI), was released into groundwater from the Pacific Gas and Electric Company (PG&E) Hinkley compressor station in the Mojave Desert 80 miles (mi) northeast of Los Angeles, California. Remediation began in 1992, and in 2010, site cleanup was projected to require between 10 and 95 years and was expected to cost between $36 and $176 million. A...
Authors
John A. Izbicki
Groundwater prospecting using a multi-technique framework in the lower Casas Grandes Basin, Chihuahua, México Groundwater prospecting using a multi-technique framework in the lower Casas Grandes Basin, Chihuahua, México
Groundwater is a strategic resource for economic development, social justice, environmental sustainability, and water governance. The lower Casas Grandes River Basin, located in the state of Chihuahua, México, is in a semi-arid region with increasing groundwater demand and regional challenges such as drought and depletion of aquifers. Even though there is official information about the
Authors
Alfredo Granados Olivas, Ezequiel Rascon-Mendoza, Francisco J. Gomez-Dominguez, Carlo I. Romero-Gameros, Andrew J. Robertson, Luis C. Bravo-Pena, Ali Mirchi, Ana C. Garcia-Vazquez, Alexander Fernald, John W. Hawley, Luis Alfonso Gandara-Ruiz, Luis C. Alatorre-Cejudo, Maryam Samimi, Felipe A. Vazquez-Galvez, Adan Pinales-Munguia, Oscar F. Ibanez-Hernandez, Josiah M. Heyman, Alex Mayer, William L. Hargrove
Near-field receiving-water monitoring of trace metals and a benthic community near the Palo Alto Regional Water Quality Control Plant in south San Francisco Bay, California—2020 Near-field receiving-water monitoring of trace metals and a benthic community near the Palo Alto Regional Water Quality Control Plant in south San Francisco Bay, California—2020
Trace-metal concentrations in sediment and in the clam Limecola petalum (World Register of Marine Species, 2020; formerly reported as Macoma balthica and M. petalum), clam reproductive activity, and benthic macroinvertebrate community structure were investigated in a mudflat 1 kilometer (km) south of the discharge of the Palo Alto Regional Water Quality Control Plant (PARWQCP) in south...
Authors
Daniel J. Cain, Marie Noele Croteau, Janet K. Thompson, Francis Parchaso, A. Robin Stewart, Emily L. Zierdt Smith, Kelly H. Shrader, Le H. Kieu, Samuel N. Luoma