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claudia-bouman
Team TFS
Team TFS
1) The University of Tennessee, Dept. of Earth and Planetary Sciences, 1412 Circle Drive, Knoxville, TN, 37996, USA, 2) The Climate Change Institute and the Environmental Science Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN, 37831, USA
Applied Geochemistry (2016), In press, doi: 10.1016/j.apgeochem.2016.05.007
Chemical and isotope compositions of shallow groundwater in areas impacted by hydraulic fracturing and surface mining in the Central Appalachian Basin, Eastern United States
St. Thomas M. LeDoux (1), Anna Szynkiewicz (1), Anthony M. Faiia (1), Melanie A. Mayes (2), Michael L. McKinney (1) and William G. Dean (1)
This study compares concentrations and isotopic compositions of CH4 sampled from domestic groundwater wells in Letcher County, Eastern Kentucky in order to characterize its occurrence and origins in relation to both neighboring hydraulically fractured natural gas wells and surface coal mines. The studied groundwater showed concentrations of CH4 ranging from 0.05 mg/L to 10 mg/L, thus, no immediate remediation is required. The δ13C values of CH4 ranged from −66‰ to −16‰, and δ2H values ranged from −286‰ to −86‰, suggesting an immature thermogenic and mixed biogenic/thermogenic origin. The occurrence of CH4 was not correlated with proximity to hydraulically fractured natural gas wells. Generally, CH4 occurrence corresponded with groundwater abundant in Na+, Cl−, and HCO3−, and with low concentrations of SO42−.
  • IRMS
  • Methane
  • Groundwater
  • Carbon Isotopes
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