Jon Thomas Kent Becher Phil Harte 2017 PDF and LAS Fort Worth, Texas U.S. Geological Survey https://doi.org/10.5066/F7CR5RJS The data set contained herein were collected as part of a cooperative U.S. Geological Survey and U.S. Environmental Protection Agency (EPA) project entitled "Field Investigations to Help Support the Assessment of Background Concentrations for Uranium (U) at the Homestake Mining Company, Superfund Site near Milan, New Mexico, July 2016.” The site is underlain by alluvial and several consolidated rock units (Chinle and San Andreas aquifers) that contain in some cases elevated concentrations of U above the EPA MCL (maximum contaminant level). Borehole geophysical data were collected from six alluvial wells at the site. Borehole geophysical logs included: induction, fluid resistivity, natural gamma, spectral gamma, fluid temperature, caliper, casing collar locator, optical televiewer, and electromagnetic flow meter logging (ambient and stressed). Geophysical data collected from these wells were used to evaluate well construction, stratigraphy, distribution of potassium, uranium, and thorium, locations of passive sampler deployment and placement, and inflow and outflow intervals of a well under ambient and pumped conditions. Borehole geophysical data were collected to augment and inform water-quality sample collection and analysis. For example, borehole geophysical logging data including hydrogeophysics analysis is useful for assessing sources of water in a well and geochemical differences. The borehole geophysical logs that were collected provide insights into the distribution of flow in a well, correlation of flow with particular stratigraphic units, and subsurface heterogeneity pertaining to potential sources of U. In order for a user to see the geophysical log data the files are in .pdf formats. Las files in ASCII format are included in data package which has internal metadata and tabular data. There is a complimentary water-quality dataset from this site that will have its own metadata and data files. The well location information is contained in the complimentary water-quality dataset. The well location and depth information was received from a third party; specific vertical and horizontal datum information were not provided. For the purpose of this analysis the horizontal datum is assumed to be the North American Datum of 1983 (NAD83) and the vertical datum is assumed to be the North American Vertical Datum of 1988 (NAVD88). 20160808 20160813 ground condition In work As needed -107.889691 -107.836308 35.268274 35.210418 Homestake Superfund Site, Milan, New Mexico USGS Thesaurus, Common names Homestake, Superfund, Uranium, borehole geophysics, spectral gamma, New Mexico, Grants, flow meter USGS Metadata Identifier USGS:59403f9be4b0764e6c631320 Geographic Names Information System (GNIS) Milan, Cibolo County, New Mexico none none TXWSC Public Information Officer USGS mailing and physical

1505 Ferguson Lane

Austin Texas 78754 USA 512-927-5300 gs-w-txpublic-info@usgs.gov Prepared in cooperation with Environmental Protection Agency (EPA) No formal attribute accuracy tests were conducted. No formal logical accuracy tests were conducted. Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. No formal positional accuracy tests were conducted. All borehole geophysical data were collected by the USGS using a Century Geophysical Corporation System VI logging system or a Mount Sopris Instruments Matrix logging system. Borehole geophysical tools were conveyed by a 0.1875-inch diameter 4-conductor wireline using a truck-mounted hydraulic drawworks. Limitations, calibration procedures, and algorithms of the geophysical probes are available from the manufacturers at http://www.century-geo.com/tools.htm or http://mountsopris.com/products/downhole-probes/. Borehole geophysics logs were reviewed and QA/QC'ed to remove outlier and non-applicable data. WellCAD version 4.4 was used to review and process all geophysical logs and to develop final log plots of combined geophysical data. Post processing of the borehole flow-logs was conducted using FLASH. FLASH (Flow-Log Analysis of Single Holes) is a spreadsheet-based graphical user interface (GUI) for a multi-layer Thiem solution for steady-state flow to a borehole. The software allows for analysis of data from boreholes in which step increases in flow (from discrete fractures or zones) or linear increases in flow (over multiple aquifer layers) are observed. Data are entered in the worksheet 'FIELD DATA.' Interpretations of ambient and stressed flow are enervated along with physical parameters and water-level measurements on the 'INPUTS' sheet. Visual Basic for Applications (VBA) routines provide an interface to the Excel Solver, which can be used for model calibration. This spreadsheet uses a multi-layer Thiem analytical model to generate borehole flow logs representing the flow that would be measured in a borehole with a specified number of aquifers for a given set of values for the water levels in each of the aquifers, and the difference between the open-hole water level under static and steady pumping (or injection) conditions. The program is used in a forward modeling mode (that is, trial and error) until a satisfactory match between measured and computed flow is achieved for a given set of input parameters. In the GUI the input parameters, which generally includes transmissivity and head, can be changed; the simulated flow profiles are updated automatically. The GUI also supports use of the Excel Solver for automated calibration. 201608 0.000010000 0.000010000 Decimal degrees North American Datum of 1983 Geodetic Reference System 80 6378137 298.25722210088 *.date.OTO1 The * is the well number, followed by date and log type. These files include optical televiewer logs. date= YYYYMMDD Project Defined Optical televiewer Optical televiewer, manufacturer Mount Sopris, Model OBI-40, used to confirm completion properties, screen type, and condition. Project Defined 0 270 degrees *.date.ZZ01 The * is the well number, followed by date and log type. These files include natural gamma, caliper, casing collar locator, induction resistivity, fluid conductivity, temperature, density, salinity, and pressure. date= YYYYMMDD Project Defined Natural gamma Natural gamma, manufacturer Century Geophysical Corp., model 8144, multi-parameter E-log, log is used for bed boundary analysis, general lithology, assessment of coarsening/fining, depth matching USGS 0 150 API (unit of radioactivity) Conductivity Conductivity, manufacturer Century Geophysical Corp., model 9512, slim hole induction tool, measures the conductivity of the formation, used for bed boundaries and formation water evaluation. Project Defined 0 300 mmho/m, millimho per meter Caliper Caliper, manufacturer Century Geophysical Corp., model 7074, used to confirm casing and screen are in acceptable condition. Project Defined 0 10 inches CCL Casing collar locator (CCL), manufacturer Century Geophysical Corp., model 7074, indicates metallic objects in well such as metal collars or centralizers. Project Defined 60,000 63,000 cps, counts per second Induction Resistivity Induction, manufacturer Century Geophysical Corp., model 9512, indicates bed boundaries, general lithology, assessment of coarsening/fining, and formation fluid assessment. Project Defined .2 200 Ohm-m, Ohm-meters Image-NM Optical televiewer, manufacturer Mount Sopris, Model OBI-40, used to confirm completion properties, screen type, and condition. Project Defined 0 270 degrees Fluid conductivity at 20 °C Fluid conductivity, manufacturer Mount Sopris, IDRONAUT, used to asses fluid property changes between ambient and stressed conditions. Project Defined 3,100 4,100 uScm-1, microsiemens per centimeter Fluid conductivity at 25 °C Fluid conductivity, manufacturer Mount Sopris, IDRONAUT, used to asses fluid property changes between ambient and stressed conditions. Project Defined 3,100 4,100 uS/cm, microsiemens per centimeter Temperature Temperature, manufacturer Century Geophysical Corp., Model 8144, used to asses fluid property changes between ambient and stressed conditions. Project Defined 13 15 C, degrees Celsius Density Density, manufacturer Mount Sopris, IDRONAUT, used to assess fluid property changes between ambient and stressed conditions. Project Defined 1,000 1,002 kg/m3, kilograms per cubic meter Salinity Salinity, manufacturer Mount Sopris, IDRONAUT, used to asses fluid property changes between ambient and stressed conditions. Project Defined 2 2.5 g/kg, grams per kilogram Pressure Pressure, manufacturer Mount Sopris, IDRONAUT, used to asses fluid property changes between ambient and stressed conditions. Project Defined 0 50 dbar, decibar *.date.ZZ02 The * is the well number, followed by date and log type. These files include natural gamma, caliper, casing collar locator, induction resistivity, fluid conductivity, temperature, density, salinity, pressure, stacked spectrum, stacked potassium, stacked uranium, and stacked thorium. date= YYYYMMDD Project Defined Natural gamma Natural gamma, manufacturer Century Geophysical Corp., model 8144, multi-parameter E-log, log is used for bed boundary analysis, general lithology, assessment of coarsening/fining, depth matching Project Defined 0 150 API (radioactive units) Conductivity Conductivity, manufacturer Century Geophysical Corp., model 9512, slim hole induction tool, measures the conductivity of the formation, used for bed boundaries and formation water evaluation. Project Defined 0 300 mmho/m, millimho per meter Caliper Caliper, manufacturer Century Geophysical Corp., model 7074, used to confirm casing and screen are in acceptable condition. Project Defined 0 10 inches CCL Casing collar locator (CCL), manufacturer Century Geophysical Corp., model 7074, indicates metallic objects in well such as metal collars or centralizers. Project Defined 58,000 62,000 cps, counts per second Induction resistivity Induction, manufacturer Century Geophysical Corp., model 9512, indicates bed boundaries, general lithology, assessment of coarsening/fining, and formation fluid assessment. Project Defined .2 200 Ohm-m, ohm per meter Image-NM Optical televiewer, manufacturer Mount Sopris, Model OBI-40, used to confirm completion properties, screen type, and condition. Project Defined 0 270 degrees Fluid conductivity at 20 °C Fluid conductivity, manufacturer Mount Sopris, IDRONAUT, used to asses fluid property changes between ambient and stressed conditions. Project Defined 3,100 4,100 uS/cm, microsiemens per centimeter Fluid conductivity at 25 °C Fluid conductivity, manufacturer Mount Sopris, IDRONAUT, used to asses fluid property changes between ambient and stressed conditions. Project Defined 3,100 4,100 uS/cm, microsiemens per centimeter Temperature Temperature, manufacturer Century Geophysical Corp., Model 8144, used to asses fluid property changes between ambient and stressed conditions. Project Defined 13 15 C, degrees Celsius Density Density, manufacturer Mount Sopris, IDRONAUT, used to assess fluid property changes between ambient and stressed conditions. Project Defined 1,000 1,001 kg/m3, kilograms per cubic meter Salinity Salinity, manufacturer Mount Sopris, IDRONAUT, used to asses fluid property changes between ambient and stressed conditions. Project Defined 0 2.5 g/kg, grams per kilogram Pressure Pressure, manufacturer Mount Sopris, IDRONAUT, used to asses fluid property changes between ambient and stressed conditions Project Defined 0 50 dbar, decibar Stacked spectrum Spectral gamma, manufacturer Mount Sopris, model 2LSA-1000, identifies changes and depositional environment, identify and classify lithology types. Project Defined 0 2,000 pCi/gm, picocuries per gram Stacked K Potassium measured by spectral gamma log, manufacturer Mount Sopris, model 2LSA-1000, identifies changes and depositional environment, identify and classify lithology types. Project Defined 0 50 pCi/gm, picocuries per gram Stacked U Uranium measured by spectral gamma log, manufacturer Mount Sopris, model 2LSA-1000, identifies changes and depositional environment, identify and classify lithology types. Project Defined 0 20 pCi/gm, picocuries per gram Stack Th Thorium measured by spectral gamma log, manufacturer Mount Sopris, model 2LSA-1000, identifies changes and depositional environment, identify and classify lithology types. Project Defined 0 20 pCi/gm, picocuries per gram *.date.ZZ03 The * is the well number, followed by date and log type. These files include natural gamma, caliper, casing collar locator, induction resistivity, televiewer, pumping fluid resistivity, ambient resistivity, ambient temperature, pumping temperature, pumping flow station, pumping flow model, ambient flow station, ambient flow model, stacked potassium, stacked uranium, and stacked thorium. date= YYYYMMDD Project Defined Natural gamma Natural gamma, manufacturer Century Geophysical Corp., model 8144, multi-parameter E-log, log is used for bed boundary analysis, general lithology, assessment of coarsening/fining, depth matching. Project Defined 0 150 API (radioactivity units) Conductivity Conductivity, manufacturer Century Geophysical Corp., model 9512, slim hole induction tool, measures the conductivity of the formation, used for bed boundaries and formation water evaluation. Project Defined 0 300 mmho/m, millimho per meter Caliper Caliper, manufacturer Century Geophysical Corp., model 7074, used to confirm casing and screen are in acceptable condition. Project Defined 0 10 inches CCL Casing collar locator (CCL), manufacturer Century Geopysical Corp., model 7074, indicates metallic objects in well such as metal collars or centralizers. Project Defined 58,000 62,000 cps, counts per second Induction resistivity Induction, manufacturer Century Geophysical Corp., model 9512, indicates bed boundaries, general lithology, assessment of coarsening/fining, and formation fluid assessment. Project Defined .2 200 Ohm-m, ohm meter Image-NM Optical televiewer, manufacturer Mount Sopris, Model OBI-40, used to confirm completion properties, screen type, and condition. Project Defined 0 270 degrees Pumping fluid resistivity Pumping fluid resistivity, manufacturer Century Geophysical Corp., Model 9722, used to asses fluid property changes during stressed conditions. Project Defined 3 5 ohm-m, ohm meters Ambient Fluid Resistivity Ambient fluid resistivity, manufacturer Century Geophysical Corp., Model 9722, used to asses fluid property changes during ambient conditions. Project Defined 3 5 Ohm-m, ohm meters Ambient Temperature Ambient temperature, manufacturer Century Geopphysical Corp., Model 9722, used to asses fluid property changes during ambient conditions. Project Defined 3 5 F, degrees Fahrenheit Pumping Temperature Pumping temperature, manufacturer Century Geophysical Corp., Model 9722, used to asses fluid property changes during stressed conditions. Project Defined 55 59 F, degrees fahrenheit Pumping Flow Station Location in depth (feet below land surface) of flow meter and magnitude of vertical flow. Project Defined USGS defined in field. Pumping Flow Model Modeled flow calculations at various points within the saturated section of well during pumping conditions. Project Defined -5 5 gpm, gallons per minute Ambient Flow Station Location in depth (feet below land surface) of and magnitude of vertical flow meter during ambient conditions. Project Defined USGS defined in field. Ambient Flow Model Modeled flow calculations at various points within the saturated section of well during ambient conditions. Project Defined USGS K Potassium measured by spectral gamma log, manufacturer Mount Sopris, model 2LSA-1000, identifies changes and depositional environment, identify and classify lithology types. Project Defined 0 50 pCi/gm, picocuries per gram U Uranium measured by spectral gamma log, manufacturer Mount Sopris, model 2LSA-1000, identifies changes and depositional environment, identify and classify lithology types. Project Defined 0 20 pCi/gm, picocuries per gram Th Thorium measured by spectral gamma log, manufacturer Mount Sopris, model 2LSA-1000, identifies changes and depositional environment, identify and classify lithology types. Project Defined 0 20 pCi/gm, picocuries per gram Stacked K Stacked potassium measured by spectral gamma log, manufacturer Mount Sopris, model 2LSA-1000, identifies changes and depositional environment, identify and classify lithology types. Project Defined 0 50 pCi/gm, picocuries per gram Stacked U Stacked uranium measured by spectral gamma log, manufacturer Mount Sopris, model 2LSA-1000, identifies changes and depositional environment, identify and classify lithology types. Project Defined 0 20 pCi/gm, picocuries per gram Stacked Th Stacked Thorium measured by spectral gamma log, manufacturer Mount Sopris, model 2LSA-1000, identifies changes and depositional environment, identify and classify lithology types. Project Defined 0 20 pCi/gm, picocuries per gram *.date.FLASH01 The * is the well number, followed by date and log type. These files include flow log analysis of single holes. date= YYYYMMDD Project Defined Ambient Flow Profile Profile of ambient flow model. Project Defined 0 200 ft, feet, gpm, gallons per minute Pumped flow model Profile of pumping flow model. Project Defined 0 200 ft, feet, gpm, gallons per minute *.date.WD01 The * is the well number, followed by date and log type. These files include well deviation logs that include: azimuth, tilt, depth, easting, northing, total vertical depth, closure distance, and closure angle. date= YYYYMMDD Project Defined Azimuth The direction of the tilt of the borehole. Project Defined 0 360 degrees Tilt The angle in degrees in the direction of the azimuth of the borehole. Project Defined 0 10 degrees Depth The distance below land surface in feet. Project Defined 0 200 feet Easting The location in easterly direction (negative would be west) of the center of the borehole relative to the surface location. Project Defined -5 5 feet Northing The location in northerly direction (negative would be south) of the center of the borehole relative to the surface location. Project Defined -5 5 feet TVD The total vertical depth (TVD) below land surface of the well compensated for tilt. Project Defined 0 200 feet Closure Distance The distance in the closure angle direction from the surface location. Project Defined 0 5 feet Closure Angle The direction of the closure of the tilt in the borehole. Project Defined 0 360 degrees U.S. Geological Survey- Science Base U.S. Geological Survey mailing and physical

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Fort Worth Texas 76115 USA 682-316-5036 jvthomas@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998