Mitchell A McAdoo

Per- and polyfluoroalkyl Substances in Select Domestic Wells in the Middle Chickahominy River Watershed, Virginia

Samples for per- and polyfluoroalkyl substances (PFAS) were collected from 10 domestic wells to assess the extent to which PFAS is coming from the groundwater aquifer or from another source within the home. Specific objectives included: Collect well construction information; Collect samples for analysis of PFAS directly from the aquifer at domestic wells; Collect samples for analysis of PFAS from two locations within the home to compare with samples collected directly from the aquifer; Quality Assure all data in accordance with USGS policies; and Release data to the public as a citable USGS Data Release. Description of Available Datasets: These data are available in Excel (.xlsx) files that contain water-quality...

Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geochemistry, PFAS, USGS Science Data Catalog (SDC), Virginia, per- and polyfluoroalkyl substances, All tags... water quality, Fewer tags

Data for Statewide Reconnaissance of Per- and Polyfluoroalkyl Substances in Rivers and Streams of Virginia, 2022-2023

These data were collected in cooperation with the Virginia Department of Environmental Quality (VADEQ) to document the occurrence of Per- and Polyfluoroalkyl Substances (PFAS) in streams and rivers of Virginia. Specifically, this effort was initiated to: 1. Collect and analyze samples for PFAS at USGS-sampling stations in the Chesapeake Bay River Input Monitoring Network and Non-Tidal Network; 2. Collect and analyze samples for PFAS at VADEQ Probabilistic Monitoring stations; 3. Collect and analyze samples for PFAS at additional DEQ-selected locations; and 4. Quality Assure all data collected in accordance with USGS policies and publicly release those data as a citable USGS Data Release. Description of Available...

Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Environmental Health, NCCWSC, USGS Science Data Catalog (SDC), Water Quality, Water Quality

This Data Release is a compilation of existing water-quality data associated with groundwater resources originating from abandoned underground coal mines in West Virginia. Data were compiled from multiple sources for the purpose of understanding the suitability of groundwater from abandoned underground coal mines for public supply, industrial, agricultural, and other uses. This compilation includes data collected for multiple individual studies conducted from July 13, 1973 through September 7, 2016. Analytical methods varied by the time period of data collection and requirements of the independent studies. This project identified 770 water quality samples from 294 sites that could be attributed to abandoned underground...

Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Appalachian Plateaus, Geochemistry, Hydrogeology, USGS Science Data Catalog (SDC), Water Quality, All tags... Water Resources, West Virginia, coal mine, mine drainage, water quality, Fewer tags

PHREEQC files for geochemical simulations in the Ohio River alluvial aquifer of West Virginia

This data release includes PHREEQC files used for geochemical models in the Ohio River alluvial aquifer of West Virginia. The associated publication by McAdoo and Connock (2024) should be consulted to understand the purpose and limitations of these simulations and data. The wateq4f database (Ball and Nordstrom, 1991) was used for the PHREEQC simulation. A report by Parkhurst and Appelo (2013) serves as the formal documentation for PHREEQC, and the software is a publicly available from the U.S. Geological Survey at https://www.usgs.gov/software/phreeqc-version-3. Files in this data release include: -OhioRiverAlluviumInput.pqi: Input file used to run the simulations documented in this data release. -OhioRiverAlluviumInput.txt:...

Categories: Data; Tags: Geochemistry, Ohio River Valley, USGS Science Data Catalog (SDC), Water Quality, Water Resources, All tags... alluvium, groundwater and surface-water interaction, hydrogeology, Fewer tags

Dataset of C1-C6 Dissolved Trace Hydrocarbon Measurements in the Western "Wet Gas" Part of the Marcellus Shale Oil and Gas Play in West Virginia, U.S.A. Collected Between June and August 2018

This dataset contains measurements of dissolved hydrocarbons in from groundwater samples collected in the shale gas producing regions of West Virginia, USA, between June and August of 2018. The target analytes in this study were: methane (CH4), ethane (C2H6), ethene (C2H4), ethyne (C2H2), propane (C3H8), propene (C3H6), i-butane (C4H10), n-butane (C4H10), 1-butene (C4H8), propyne (C3H4), i-pentane (C5H12), n-pentane (C5H12), 2-methyl-pentane (C6H14), 3-methyl-pentane (C6H14), hexane (C6H14), and benzene (C6H6). This dataset also contains corresponding measurements of chlorofluorocarbons (CFCs), Sulfurhexafluoride (SF6), dissolved permanent gases (N2/Ar), tritium, the isotope ratio of helium dissolved in water, the...

Categories: Data; Tags: Energy Resources, Environmental Health, Geochemistry, USGS Science Data Catalog (SDC), USGS-EMA-LOW-SS Oil and gas, All tags... West Virginia, biota, dissolved gases, environment, gas chromatography, greenhouse gases, groundwater, groundwater geochemistry, groundwater quality, natural gas resources, Fewer tags