Natural methane occurrence in domestic wells is common in sodium-rich shallow groundwater in valley settings overlying the Marcellus Shale

Laura Lautz1, Kayla Christian2, Gregory D Hoke3, Donald I Siegel3, Zunli Lu4 and John D Kessler5, (1)Syracuse University, Syracuse, United States, (2)Syracuse University, Syracuse, NY, United States, (3)Syracuse University, Earth Sciences, Syracuse, NY, United States, (4)Syracuse University, Department of Earth and Environmental Sciences, Syracuse, NY, United States, (5)University of Rochester, Department of Earth and Environmental Sciences, Rochester, NY, United States