An In Situ Radiological Survey Conducted During Remediation Activities at the Clean Slate 1 Site: Tonopah Test Range, Tonopah, Nevada
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1998-10-31
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Abstract:A team from the Remote Sensing Laboratory, operated by Bechtel Nevada for the U.S. Department of Energy, conducted a series of radiological measurements at the Clean Slate 1 site on the Tonopah Test Range, which is located southeast of Tonopah, Nevada. The team performed a series of gamma radiation measurements during April 28-June 19, 1997, while the remediation work, which was also conducted by Bechtel Nevada, was in progress. During the expedition, one set of radiation measurements were used to assess whether sufficient soil had been removed during the excavation work. If the measured activity was not below the remediation level, an additional layer of soil was removed. A second set of measurements were used to monitor the soil-packaging operation. As the excavated soil was loaded into trailers for transportation to the disposal site, a detector measured the amount of 241 Am passing into the trailer. This measurement was used in generating the necessary transportation and disposal site paperwork. The third set of measurements were produced by the Kiwi detector platform and used to characterize the distribution of transuranic contamination (measuring the americium activity levels and inferring the plutonium activity levels) remaining at the site. Several plots compare the 1997 post-remediation data with the 1996 characterization data.
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Content Notes:DATE OF SURVEY: APRIL 28 TO JUNE 19, 1997
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