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| 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
![](/C666/themes/default/image/downing1.png) 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. |
| Environmental Performance Report 2012: Annual Site Environmental Report per the U.S. Department of Energy Order 231.1-1B (Management Report) 科技报告 来源:US Department of Energy (DOE). 出版年: 2013 作者: [null]
![](/C666/themes/default/image/downing1.png) 收藏  |  浏览/下载:5/0  |  提交时间:2019/04/05 NREL EHS ANNUAL REPORT 2012 CLIMATE COMPLIANCE SUMMARY ENVIRONMENTAL MANAGEMENT ENVIRONMENTAL OCCURRENCES ENVIRONMENTAL PROGRAMS CONSERVATION EASEMENT LANDS MAUREEN JORDAN KURT SCHLOMBERG National Renewable Energy Laboratory |
| Nevada National Security Site Environmental Report 2011 Summary 科技报告 来源:US Department of Energy (DOE). 出版年: 2012 作者: Cathy Wills, ed
![](/C666/themes/default/image/downing1.png) 收藏  |  浏览/下载:0/0  |  提交时间:2019/04/05 Nevada National Security Site Environmental Report NNSS NNSSER 2011 Summary |
| Nevada National Security Site Environmental Report Summary 2010 科技报告 来源:US Department of Energy (DOE). 出版年: 2011 作者: LaFreniere, L. M. (Environmental Science Division)
![](/C666/themes/default/image/downing1.png) 收藏  |  浏览/下载:6/0  |  提交时间:2019/04/05 NNSSER Nevada National Security Site Environmental Report 2010 Summary NNSS |
| Nevada Test Site Environmental Report Summary 2009 科技报告 来源:US Department of Energy (DOE). 出版年: 2010 作者: Cathy Wills, ed.
![](/C666/themes/default/image/downing1.png) 收藏  |  浏览/下载:1/0  |  提交时间:2019/04/05 Nevada Test Site Environmental Report NTSER ASER 2009 Summary |
| Erosion Potential of a Burn Site in the Mojave-Great Basin Transition Zone: Interim Summary of One Year of Measurements 科技报告 来源:US Department of Energy (DOE). 出版年: 2010 作者: Etyemezian, V.; Shafer, D.; Miller, J.; Kavouras, I.; Campbell, S.; DuBois, D.; King, J.; Nikolich, G.; Zitzer, S.
![](/C666/themes/default/image/downing1.png) 收藏  |  浏览/下载:0/0  |  提交时间:2019/04/05 Erosion Potential of a Burn Site in the Mojave-Great Basin Transition Zone: Interim Summary of One Year of Measurements |