In 2020, the U.S. Geological Survey (USGS), in cooperation with the U.S. Department of Energy (DOE) for Naval Reactors Laboratory Field Office or Naval Reactors Facility (NRF), drilled and constructed borehole USGS 151 (433846112540701) for stratigraphic framework analyses at the Idaho National Laboratory (INL) near the NRF, located in southeastern Idaho. Borehole USGS 151 was continuously cored from approximately 48 to 1,070 feet below land surface (BLS) and rotary drilled from approximately 1,070 to 1,720 feet BLS. Core drilling was discontinued after 1,070 feet BLS and changed over to straight rotary drilling due to funding constraints and deadlines. The USGS collected select geophysical data, daily drilling notes, and prepared detailed core descriptions for core collected to 1,070 ft BLS, which are included as part of this data release. The USGS Research Drilling Program (RDP) performed the core drilling operations and well construction between June 4, 2020 to September 21, 2020; additionally, the USGS RDP collected geophysical data, single caliper log, that was collected on August 15, 2020. The USGS INL Project Office collected multiple geophysical logs on September 15, 2020. Select geophysical data include natural gamma, caliper, neutron, and gamma-gamma density logs which were examined synergistically with available core material to identify contacts between basalt flows and location and thickness of sediment layers. Additionally, a gyroscopic deviation survey was performed and analyzed to reflect the projected well bore path. Geophysical data were collected using Century™ multi-parameter logging probes and select logs are displayed in well log figures. Geophysical data shown in figure displays include the natural gamma and neutron probe (9055C), caliper probe (9065A), gamma-gamma density probe (0024C), and gyroscopic deviation probe (9095C). With the exception of the caliper log, all geophysical data were collected through drill pipe after reaching total depth. Geophysical log data not represented in figure displays can be obtained by downloading attached LAS files. Drill core was taken to the USGS Lithologic Core Storage Library for storage and permanent archive located at Central Facilities Area on the INL. Drill core was photographed and described using standardized methods (Johnson and others, 2005). These standardized methods make use of commercially available software that include using a procedure developed by the USGS INL Project Office. The standardized method maximizes description and minimizes interpretation.

In 2016, the U.S. Geological Survey (USGS), in cooperation with the U.S. Department of Energy (DOE), drilled and constructed borehole USGS 144 (433021112552501) for stratigraphic framework analyses and water quality monitoring at the Idaho National Laboratory (INL), located in southeastern Idaho. Borehole USGS 144 was continuously cored from approximately 4 to 639 ft below land surface (BLS). The final construction depth, after reaming out cored section of the well, is 620 ft BLS. The USGS collected geophysical data, daily drilling notes, and prepared detailed core descriptions for core collected to 639 ft BLS, which are included as part of this data release. The USGS INL Project Office drilling team performed the core drilling operations and well construction between August 22, 2016, to December 7, 2016. The USGS INL Project Office collected geophysical logs on November 16, 28 and 30, 2016. Geophysical data include natural gamma, temperature, specific conductance, acoustic televiewer (ATV), neutron, neutron porosity, and gamma-gamma density logs which were examined synergistically with available core material to identify contacts between basalt flows, location and thickness of sediment layers, relative changes in porosity, vertical changes in specific conductivity and temperature, and changes in fracture density. Additionally, a gyroscopic deviation survey was performed and analyzed to reflect the projected well bore path. Geophysical data were collected using Century™ multi-parameter logging probes and select logs are displayed in well log figures. Geophysical data shown in figure displays include the natural gamma and neutron probe (9057A), gamma-gamma density probe (0024A), and gyroscopic deviation probe (9095C), and acoustic televiewer (9804A). With the exception of the 9804A and 9042A logs run inside the open borehole after drill rod was removed geophysical data were collected through the drill rod after reaching total cored depth. All logs were run from the bottom-up after reaching total unobstructed depth. Geophysical log data not represented in figure displays can be obtained by downloading attached LAS files, which are bundled in a single compressed ZIP file, or by visiting USGS - GeoLog Locator. Drill core was taken to the USGS Lithologic Core Storage Library for storage and permanent archive located at Central Facilities Area on the INL. Drill core was photographed and described using standardized methods and procedures develpoed by the USGS INL Project Office which maximizes the description of the core and minimizes any interpretation.

In 2016, the U.S. Geological Survey (USGS), in cooperation with the U.S. Department of Energy (DOE), drilled and constructed borehole USGS 144 (433021112552501) for stratigraphic framework analyses and water quality monitoring at the Idaho National Laboratory (INL), located in southeastern Idaho. Borehole USGS 144 was continuously cored from approximately 4 to 639 ft below land surface (BLS). The final construction depth, after reaming out cored section of the well, is 620 ft BLS. The USGS collected geophysical data, daily drilling notes, and prepared detailed core descriptions for core collected to 639 ft BLS, which are included as part of this data release. The USGS INL Project Office drilling team performed the core drilling operations and well construction between August 22, 2016, to December 7, 2016. The USGS INL Project Office collected geophysical logs on November 16, 28 and 30, 2016. Geophysical data include natural gamma, temperature, specific conductance, acoustic televiewer (ATV), neutron, neutron porosity, and gamma-gamma density logs which were examined synergistically with available core material to identify contacts between basalt flows, location and thickness of sediment layers, relative changes in porosity, vertical changes in specific conductivity and temperature, and changes in fracture density. Additionally, a gyroscopic deviation survey was performed and analyzed to reflect the projected well bore path. Geophysical data were collected using Century™ multi-parameter logging probes and select logs are displayed in well log figures. Geophysical data shown in figure displays include the natural gamma and neutron probe (9057A), gamma-gamma density probe (0024A), and gyroscopic deviation probe (9095C), and acoustic televiewer (9804A). With the exception of the 9804A and 9042A logs run inside the open borehole after drill rod was removed geophysical data were collected through the drill rod after reaching total cored depth. All logs were run from the bottom-up after reaching total unobstructed depth. Geophysical log data not represented in figure displays can be obtained by downloading attached LAS files, which are bundled in a single compressed ZIP file, or by visiting USGS - GeoLog Locator. Drill core was taken to the USGS Lithologic Core Storage Library for storage and permanent archive located at Central Facilities Area on the INL. Drill core was photographed and described using standardized methods and procedures develpoed by the USGS INL Project Office which maximizes the description of the core and minimizes any interpretation.

During 2017 and 2018, the U.S. Geological Survey (USGS) Idaho National Laboratory Project Office, in cooperation with the U.S. Department of Energy (DOE), drilled and constructed borehole USGS 145 (USGS site 433358113042701) for hydrogeologic data collection and stratigraphic framework analyses. The well is located along the western boundary of the Idaho National Laboratory (INL) just south of highway 20. USGS 145 was continuously cored from approximately 3 to 1,368 feet below land surface (BLS), and had water level of 704.73 ft BLS directly after drilling. Core was recovered over a two-year period, this includes cored depths from 3 to 678 ft between May 30, 2017,and November 13, 2017, and from 678 to 1,368 ft between May 17, 2018 and July 12, 2018. After coring was completed, the USGS collected geophysical data and finished construction as a dual piezometer well. The general purpose for the drilling and construction of USGS 145 was to improve the understanding of hydrogeology in the west-central part of the INL and to collect geologic data from recovered core. The well is equipped with a 1-in. stainless steel piezometer line and a 0.75-in. stainless steel piezometer line set down to 1,304 and 1,037 ft BLS, respectively. The well was filled with silica sand and cement grout from 740 to 1,368 ft BLS, encasing the piezometer screened intervals of 1,017 to 1,037 ft BLS and 1,277 to 1,297 ft BLS. The USGS collected select geophysical data, daily drilling notes, and detailed core descriptions to 1,368 ft BLS, which are included as part of this data release. The USGS collected geophysical source and deviation logs through drill casing on July 16, 2018 and additional open borehole logs on July 24, 2018. Geophysical data were collected using Century™ multi-parameter logging probes. Geophysical data include natural gamma (tool 9057A), neutron, gamma-gamma density (tool 0024C), and acoustic televiewer (ATV) logs (tool 9804A) which were examined synergistically with available core material to identify contacts between basalt flows and location and thickness of sediment layers. These logs are displayed in the file USGS145_Geophysical_Logs.pdf. Additionally, a gyroscopic deviation survey (tool 9095C) was set to collect data at 0.2-ft increments and used to display the projected well bore path and as displayed in plan view in file USGS145_PlanView_Gyro.pdf and associated well path file USGS145_9095Gyro.asc. Geophysical log data can be obtained by downloading attached LAS files or by visiting USGS - GeoLog Locator. Borehole core from USGS 145 is archived at the USGS Lithologic Core Storage Library located at Central Facilities Area, INL. Drill core was photographed and described using the standardized methods of Johnson and others, 2005. These standardized methods make use of commercially available software that include using a procedure developed by the USGS INL Project Office. The standardized method maximizes description and minimizes interpretation of the borehole core.

During 2017 and 2018, the U.S. Geological Survey (USGS) Idaho National Laboratory Project Office, in cooperation with the U.S. Department of Energy (DOE), drilled and constructed borehole USGS 145 (USGS site 433358113042701) for hydrogeologic data collection and stratigraphic framework analyses. The well is located along the western boundary of the Idaho National Laboratory (INL) just south of highway 20. USGS 145 was continuously cored from approximately 3 to 1,368 feet below land surface (BLS), and had water level of 704.73 ft BLS directly after drilling. Core was recovered over a two-year period, this includes cored depths from 3 to 678 ft between May 30, 2017,and November 13, 2017, and from 678 to 1,368 ft between May 17, 2018 and July 12, 2018. After coring was completed, the USGS collected geophysical data and finished construction as a dual piezometer well. The general purpose for the drilling and construction of USGS 145 was to improve the understanding of hydrogeology in the west-central part of the INL and to collect geologic data from recovered core. The well is equipped with a 1-in. stainless steel piezometer line and a 0.75-in. stainless steel piezometer line set down to 1,304 and 1,037 ft BLS, respectively. The well was filled with silica sand and cement grout from 740 to 1,368 ft BLS, encasing the piezometer screened intervals of 1,017 to 1,037 ft BLS and 1,277 to 1,297 ft BLS. The USGS collected select geophysical data, daily drilling notes, and detailed core descriptions to 1,368 ft BLS, which are included as part of this data release. The USGS collected geophysical source and deviation logs through drill casing on July 16, 2018 and additional open borehole logs on July 24, 2018. Geophysical data were collected using Century™ multi-parameter logging probes. Geophysical data include natural gamma (tool 9057A), neutron, gamma-gamma density (tool 0024C), and acoustic televiewer (ATV) logs (tool 9804A) which were examined synergistically with available core material to identify contacts between basalt flows and location and thickness of sediment layers. These logs are displayed in the file USGS145_Geophysical_Logs.pdf. Additionally, a gyroscopic deviation survey (tool 9095C) was set to collect data at 0.2-ft increments and used to display the projected well bore path and as displayed in plan view in file USGS145_PlanView_Gyro.pdf and associated well path file USGS145_9095Gyro.asc. Geophysical log data can be obtained by downloading attached LAS files or by visiting USGS - GeoLog Locator. Borehole core from USGS 145 is archived at the USGS Lithologic Core Storage Library located at Central Facilities Area, INL. Drill core was photographed and described using the standardized methods of Johnson and others, 2005. These standardized methods make use of commercially available software that include using a procedure developed by the USGS INL Project Office. The standardized method maximizes description and minimizes interpretation of the borehole core.