As part of a research study in cooperation with the U.S. Environmental Protection Agency (EPA) and the U.S. Army at Fort Irwin National Training Center, the U.S. Geological Survey (USGS) evaluated unsaturated zone soil property data of cores from a borehole for a newly drilled monitoring well near a dry well and Four-plex baseball field. Cores were continuous from land surface down to 240 feet below land surface and were drilled by consultants to EPA using sonic rotary–a fluidless drilling technique. Data on this page consist of: 1) field drilling notes from USGS and consultants to EPA (GeoSystems Analysis, Inc., Tucson, Arizona); 2) field descriptions of core lithology–including grain size, sorting, color, mineralogy, moisture content and other distinguishing characteristics–done on site by USGS personnel; and 3) photos of the cores taken by USGS personnel–consisting of bagged cores in original core liners, and subsampled cores in plastic core boxes.

As part of a research study in cooperation with the U.S. Environmental Protection Agency (EPA) and the U.S. Army at Fort Irwin National Training Center, the U.S. Geological Survey (USGS) evaluated unsaturated zone soil property data of cores from a newly drilled monitoring well site near a dry well and Four-plex baseball field. Measurements and observations are presented for cores from an initial drilling attempt (site ESW2A), which stopped at 85 feet below land surface due to equipment issues, and data are presented for cores from the successful drilling attempt (ESW2B) down to 240 feet below land surface. The two core sites are located approximately 6 feet from each other. Data measured on core material included gravimetric measurements of bulk water content, matric potential, and specific conductance of soil leachate samples.

As part of a research study in cooperation with the U.S. Environmental Protection Agency (EPA) and the U.S. Army at Fort Irwin National Training Center, the U.S. Geological Survey (USGS) evaluated unsaturated zone soil property data of cores from a newly drilled monitoring well site near a dry well and Four-plex baseball field. Measurements and observations are presented for cores from an initial drilling attempt (site ESW2A), which stopped at 85 feet below land surface due to equipment issues, and data are presented for cores from the successful drilling attempt (ESW2B) down to 240 feet below land surface. The two core sites are located approximately 6 feet from each other. Data measured on core material included gravimetric measurements of bulk water content, matric potential, and specific conductance of soil leachate samples.

The U.S. Army Fort Irwin National Training Center (NTC), approximately 35 miles north-northeast of Barstow, California, obtains all of its potable water supply from three groundwater basins (Irwin, Langford, and Bicycle Basins) within the NTC boundaries. In these basins, groundwater withdrawals exceed natural recharge, resulting in water-level declines. However, managed aquifer recharge using recycled water (treated wastewater) has offset water-level declines in Irwin Basin. Additionally, localized water-quality changes have occurred in some parts of Irwin Basin as a result of human activities (for example, wastewater disposal practices, landscape irrigation, and (or) leaking pipes). As part of a research study in cooperation with the U.S. Environmental Protection Agency (EPA) and the U.S. Army, the U.S. Geological Survey (USGS) evaluated unsaturated zone soil property data of cores from a borehole for a newly drilled monitoring well near a dry well and irrigated Four-plex baseball field. Measurements and observations are presented for cores from an initial drilling attempt (site ESW2A), which stopped at 85 feet below land surface due to equipment issues, and data are presented for cores from the successful drilling attempt (ESW2B) down to 240 feet below land surface. The two boreholes are located approximately 6 feet from each other. The grain size measurements were compared to a reference sample HMR2 collected as part of a previous study near Barstow.

The U.S. Army Fort Irwin National Training Center (NTC), approximately 35 miles north-northeast of Barstow, California, obtains all of its potable water supply from three groundwater basins (Irwin, Langford, and Bicycle Basins) within the NTC boundaries. In these basins, groundwater withdrawals exceed natural recharge, resulting in water-level declines. However, managed aquifer recharge using recycled water (treated wastewater) has offset water-level declines in Irwin Basin. Additionally, localized water-quality changes have occurred in some parts of Irwin Basin as a result of human activities (for example, wastewater disposal practices, landscape irrigation, and (or) leaking pipes). As part of a research study in cooperation with the U.S. Environmental Protection Agency (EPA) and the U.S. Army, the U.S. Geological Survey (USGS) evaluated unsaturated zone soil property data of cores from a borehole for a newly drilled monitoring well near a dry well and irrigated Four-plex baseball field. Measurements and observations are presented for cores from an initial drilling attempt (site ESW2A), which stopped at 85 feet below land surface due to equipment issues, and data are presented for cores from the successful drilling attempt (ESW2B) down to 240 feet below land surface. The two boreholes are located approximately 6 feet from each other. The grain size measurements were compared to a reference sample HMR2 collected as part of a previous study near Barstow.

This dataset provides well-site information and construction data for wells SF-3A, SF-3B, SF-3C, SF-4A, SF-4B, SF-4C, SF-5A, SF-5B, and SF-5C that were installed in the Buckman well field, Santa Fe County, New Mexico. The data include well-site information, borehole diameters and depths, well casing and screen diameters and depths, and annular materials and depths. The data were collected by contract and USGS personnel during drilling of the wells in the fall of 1987.

This dataset provides well-site information and construction data for wells SF-3A, SF-3B, SF-3C, SF-4A, SF-4B, SF-4C, SF-5A, SF-5B, and SF-5C that were installed in the Buckman well field, Santa Fe County, New Mexico. The data include well-site information, borehole diameters and depths, well casing and screen diameters and depths, and annular materials and depths. The data were collected by contract and USGS personnel during drilling of the wells in the fall of 1987.

As part of a larger groundwater research study conducted at the U.S. Army Fort Irwin National Training Center (NTC), located approximately 35 miles north-northeast of Barstow, California, the U.S. Environmental Protection Agency (EPA), the U.S. Army, and the U.S. Geological Survey (USGS) have cooperated to evaluate unsaturated zone soil property data of cores from the borehole for a newly drilled monitoring well (ESW2B). Specific horizons of interest were identified and selected for detailed grain-size distribution analysis using the Fritsch Analysette A28 Image Sizer (particle analyzer) located at the USGS California Water Science Center (CAWSC) in San Diego, CA. The particle analyzer identified circularity and grain size (feret diameter) for individual grains in each subsample. Ten core subsamples from the ESW2B site were analyzed with the particle analyzer. Quality-assurance data collected as part of this task included measurements of National Institute of Standards and Technology (NIST) standard 8010, and custom reference materials (including a sample of alluvium from the Mojave River, and a combination of round silica beads and plastic bugle beads) created in the USGS San Diego office. A sieve analysis was done on one core subsample using ASTM International method D6913 (method A; 2017) as additional quality assurance method.

As part of a larger groundwater research study conducted at the U.S. Army Fort Irwin National Training Center (NTC), located approximately 35 miles north-northeast of Barstow, California, the U.S. Environmental Protection Agency (EPA), the U.S. Army, and the U.S. Geological Survey (USGS) have cooperated to evaluate unsaturated zone soil property data of cores from the borehole for a newly drilled monitoring well (ESW2B). Specific horizons of interest were identified and selected for detailed grain-size distribution analysis using the Fritsch Analysette A28 Image Sizer (particle analyzer) located at the USGS California Water Science Center (CAWSC) in San Diego, CA. The particle analyzer identified circularity and grain size (feret diameter) for individual grains in each subsample. Ten core subsamples from the ESW2B site were analyzed with the particle analyzer. Quality-assurance data collected as part of this task included measurements of National Institute of Standards and Technology (NIST) standard 8010, and custom reference materials (including a sample of alluvium from the Mojave River, and a combination of round silica beads and plastic bugle beads) created in the USGS San Diego office. A sieve analysis was done on one core subsample using ASTM International method D6913 (method A; 2017) as additional quality assurance method.

This tabular dataset contains the location and construction information of select wells in the Albuquerque area, central New Mexico, and groundwater-level measurements at those wells from 2014 to 2018. Wells in this dataset are screened or assumed to be screened in the production zone (generally the interval of the aquifer where production wells are screened) of the Santa Fe Group aquifer system. Groundwater-level elevations from this dataset were used to create groundwater-level contours for winter of water year 2016.