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Monitoring Stray Natural Gas in Groundwater With Dissolved Nitrogen. An Example From Parker County, Texas 期刊论文
WATER RESOURCES RESEARCH, 2018, 54 (9) : 6024-6041
作者:  Larson, Toti E.;  Nicot, Jean-Philippe;  Mickler, Patrick;  Castro, M. Clara;  Darvari, Roxana;  Wen, Tao;  Hall, Chris M.
收藏  |  浏览/下载:11/0  |  提交时间:2019/04/09
methane  groundwater  dissolved gas  hydraulic fracturing  natural gas  contamination  
Geophysics-Based Contaminant Mass Discharge Quantification Downgradient of a Landfill and a Former Pharmaceutical Factory 期刊论文
WATER RESOURCES RESEARCH, 2018, 54 (8) : 5436-5456
作者:  Balbarini, Nicola;  Ronde, Vinni;  Maurya, Pradip;  Fiandaca, Gianluca;  Moller, Ingelise;  Klint, Knud Erik;  Christiansen, Anders V.;  Binning, Philip J.;  Bjerg, Poul L.
收藏  |  浏览/下载:6/0  |  提交时间:2019/04/09
contaminant mass discharge  direct current resistivity  induced polarization  risk assessment  uncertainty  groundwater contamination  
Impact of an historic underground gas well blowout on the current methane chemistry in a shallow groundwater system 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2018, 115 (2) : 296-301
作者:  Schout, Gilian;  Hartog, Niels;  Hassanizadeh, S. Majid;  Griffioen, Jasper
收藏  |  浏览/下载:7/0  |  提交时间:2019/11/27
groundwater contamination  well blowouts  methane  isotopic fingerprinting  anaerobic methane oxidation  
Impact of Hydrogeological Uncertainty on Estimation of Environmental Risks Posed by Hydrocarbon Transportation Networks 期刊论文
WATER RESOURCES RESEARCH, 2017, 53 (11)
作者:  Ciriello, V.;  Lauriola, I.;  Bonvicini, S.;  Cozzani, V.;  Di Federico, V.;  Tartakovsky, Daniel M.
收藏  |  浏览/下载:5/0  |  提交时间:2019/04/09
risk analysis  polynomial chaos  groundwater  site contamination  LNAPL  
Radiochemically-Supported Microbial Communities: A Potential Mechanism for Biocolloid Production of Importance to Actinide Transport 科技报告
来源:US Department of Energy (DOE). 出版年: 2014
作者:  Moser, Duane P;  Hamilton-Brehm, Scott D;  Fisher, Jenny C;  Bruckner, James C;  Kruger, Brittany;  Sackett, Joshua;  Russell, Charles E;  Onstott, Tullis C;  Czerwinski, Ken
收藏  |  浏览/下载:24/0  |  提交时间:2019/04/05
Due to the legacy of Cold War nuclear weapons testing  the Nevada National Security Site (NNSS  formerly known as the Nevada Test Site (NTS)) contains millions of Curies of radioactive contamination. Presented here is a summary of the results of the first comprehensive study of subsurface microbial communities of radioactive and nonradioactive aquifers at this site. To achieve the objectives of this project  cooperative actions between the Desert Research Institute (DRI)  the Nevada Field Office of the National Nuclear Security Administration (NNSA)  the Underground Test Area Activity (UGTA)  and contractors such as Navarro-Interra (NI)  were required. Ultimately  fluids from 17 boreholes and two water-filled tunnels were sampled (sometimes on multiple occasions and from multiple depths) from the NNSS  the adjacent Nevada Test and Training Range (NTTR)  and a reference hole in the Amargosa Valley near Death Valley. The sites sampled ranged from highly-radioactive nuclear device test cavities to uncontaminated perched and regional aquifers. Specific areas sampled included recharge  intermediate  and discharge zones of a 100  000-km2 internally-draining province  known as the Death Valley Regional Flow System (DVRFS)  which encompasses the entirety of the NNSS/NTTR and surrounding areas. Specific geological features sampled included: West Pahute and Ranier Mesas (recharge zone)  Yucca and Frenchman Flats (transitional zone)  and the Western edge of the Amargosa Valley near Death Valley (discharge zone). The original overarching question underlying the proposal supporting this work was stated as: Can radiochemically-produced substrates support indigenous microbial communities and subsequently stimulate biocolloid formation that can affect radionuclides in NNSS subsurface nuclear test/detonation sites? Radioactive and non-radioactive groundwater samples were thus characterized for physical parameters  aqueous geochemistry  and microbial communities using both DNA- and cultivation-based tools in an effort to understand the drivers of microbial community structure (including radioactivity) and microbial interactions with select radionuclides and other factors across the range of habitats surveyed.  
Assessing the Role of Iron Sulfides in the Long Term Sequestration of Uranium by Sulfate-Reducing Bacteria 科技报告
来源:US Department of Energy (DOE). 出版年: 2014
作者:  Hayes, Kim F.;  Bi, Yuqiang;  Carpenter, Julian;  Hyng, Sung Pil;  Rittmann, Bruce E.;  Zhou, Chen;  Vannela, Raveender;  Davis, James A.
收藏  |  浏览/下载:7/0  |  提交时间:2019/04/05
uranium groundwater contamination  sulfate reducing bacteria  Desulfovibrio vulgaris  mackinawite oxidation  uraninite oxidation  
Chromium isotopes as indicators of hexavalent chromium reduction 科技报告
来源:US Department of Energy (DOE). 出版年: 2012
作者:  Johnson, Thomas M.
收藏  |  浏览/下载:0/0  |  提交时间:2019/04/05
chromium  contamination  groundwater  remediation  stable isotopes  natural attenuation  redox  reactive barriers  
Conceptual Models for Migration of Key Groundwater Contaminants Through the Vadose Zone and Into the Upper Unconfined Aquifer Below the B-Complex 科技报告
来源:US Department of Energy (DOE). 出版年: 2010
作者:  Serne, R. Jeffrey;  Bjornstad, Bruce N.;  Keller, Jason M.;  Thorne, Paul D.;  Lanigan, David C.;  Christensen, J. N.;  Thomas, Gregory S.
收藏  |  浏览/下载:6/0  |  提交时间:2019/04/05
B-Complex  U  Tc-99  CN  Cr  source of contamination  groundwater  deep vadose zone