January 2015 Groundwater Sampling at the Gnome-Coach, New Mexico, Site

Findlay, Rick¹  Kautsky, Mark² 

[1] Navarro Research and Engineering, Oak Ridge, TN (United States);US Department of Energy, Washington, DC (United States). Office of Legacy Management

关键词: annual sampling Gnome-Coach;    NM;   

DOI  :  10.2172/1259698
RP-ID  :  LMS/GNO/S00115
PID  :  OSTI ID: 1259698

学科分类：环境科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

Annual sampling was conducted January 27, 2015, to monitor groundwater for potential radionuclide contamination at the Gnome-Coach site in New Mexico. Samples were collected from wells USGS-1, USGS-4, and USGS-8 during this monitoring event. The sampling was performed as specified in the Sampling and Analysis Plan for US. Department of Energy Office of Legacy Management Sites (LMS/PRO/S04351, continually updated). A duplicate sample was collected from well USGS-8 and water levels were measured in all the monitoring wells onsite. Refer to the sample location map for well locations. Samples were analyzed by GEL Laboratories in Charleston, South Carolina. Samples were analyzed for gamma-emitting radionuclides by high-resolution gamma spectrometry, strontium-90, and tritium. The sample from well USGS-1 was analyzed for tritium using the enrichment method to achieve a lower minimum detectable concentration (MDC). Radionuclide contaminants were detected in wells USGS-4 and USGS-8. The detection of radionuclides in these wells was expected because the U.S. Geological Survey conducted a tracer test between these wells in 1963 using the dissolved radionuclides tritium, strontium-90, and cesium-137 as tracers. Radionuclide time-concentration graphs are included in this report for these wells. Analytical data obtained from this and past sampling events are also available in electronic format on the U.S. Department of Energy Office of Legacy Management Geospatial Environmental Mapping System website at http://gems.lm.doe.gov/#site=GNO.