Summary of data concerning radiological contamination at well PM-2, Nevada Test Site, Nye County, Nevada

[摘要] Analysis of water collected during August and September 1993from well PM-2, on Pahute Mesa at\x11the Nevada Test Site, indicatedtritium concentrations of\x1121,000 Bq/L at 610 m below land surface. TheSchooner event (U-20u) was detonated in 1968 approximately 270 meterssoutheast of well PM-2 at a working depth of 108.2 meters. The cratercreated by the Schooner event was about 129.8 meters in radiusand\x1163.4 meters in depth. Geologic and hydrologic properties of the stratigraphic units aresummarized from historical data. The soil around the well and water inthe well were analyzed for radionuclides and water in the well was alsoanalyzed for inorganic constituents and organic (volatile andsemivolatile) substances.Close agreement between tritium analyses of water from well PM-2, atdifferent times and at the same depths, confirms the elevated levels oftritium. The highest tritium values in the borehole were at 610 metersbelow land surface-above the shallowest perforations at 765 meters belowland surface. These values were only slightly higher than values found atgreater depth in the well.

[发布机构] U.S. Geological Survey

[学科分类] 地球科学(综合)