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Community Radiation Monitoring Program; Annual report, October 1, 1990--September 30, 1991

Description: The Community Radiation Monitoring Program is a cooperative effort between the US Department of Energy (DOE), the US Environmental Protection Agency (EPA), the Desert Research Institute (DRI), a division of the University and Community College System of Nevada, and the Nuclear Engineering Laboratory of the University of Utah (U of U). This eleventh year of the program began in the summer of 1991 and the work continues as an integral part of the DOE-sponsored long-term offsite radiological monit… more
Date: June 1, 1992
Creator: Cooper, E. Nathan & McArthur, Richard D.
Item Type: Refine your search to only Report
open access

Evaluation of groundwater flow and transport at the Shoal underground nuclear test: An interim report

Description: Since 1962, all United States nuclear tests have been conducted underground. A consequence of this testing has been the deposition of large amounts of radioactive materials in the subsurface, sometimes in direct contact with groundwater. The majority of this testing occurred on the Nevada Test Site, but a limited number of experiments were conducted in other locations. One of these is the subject of this report, the Project Shoal Area (PSA), located about 50 km southeast of Fallon, Nevada. The … more
Date: July 1, 1998
Creator: Pohll, Greg; Chapman, Jenny; Hassan, Ahmed; Papelis, Charalambos; Andricevic, Roko & Shirley, Craig
Item Type: Refine your search to only Report
open access

Exposure assessment of groundwater transport of tritium from the Central Nevada Test Area

Description: This exposure assessment provides a range of possible human health risk at two locations due to groundwater transport from the Faultless underground nuclear test. These locations correspond to the boundary of the land under DOE control (where no wells currently exist) and the closest existing well (Six Mile Well). The range in excess risk is within the EPA goal for excess risk due to environmental contaminants (10{sup {minus}6}) at Six Mile Well. Calculations considering high spatial variabilit… more
Date: April 1, 1995
Creator: Pohlmann, Karl; Chapman, Jenny & Andricevic, Roko
Item Type: Refine your search to only Report
open access

Hydrologic database user`s manual

Description: The Hydrologic Database is an electronic filing cabinet containing water-related data for the Nevada Test Site (NTS). The purpose of the database is to enhance research on hydrologic issues at the NTS by providing efficient access to information gathered by a variety of scientists. Data are often generated for specific projects and are reported to DOE in the context of specific project goals. The originators of the database recognized that much of this information has a general value that trans… more
Date: September 1, 1993
Creator: Champman, Jenny B.; Gray, Karen J. & Thompson, Carol B.
Item Type: Refine your search to only Report
open access

Origin of elevated water levels encountered in Pahute Mesa emplacement boreholes: Preliminary investigations

Description: The presence of standing water well above the predicted water table in emplacement boreholes on Pahute Mesa has been a recurring phenomenon at the Nevada Test Site (NTS). If these levels represent naturally perched aquifers, they may indicate a radionuclide migration hazard. In any case, they can pose engineering problems in the performance of underground nuclear tests. The origin of these elevated waters is uncertain. Large volumes of water are introduced during emplacement drilling, providing… more
Date: November 1, 1993
Creator: Brikowski, T.; Chapman, J.; Lyles, B. & Hokett, S.
Item Type: Refine your search to only Report
open access

Remote sensing for the geobotanical and biogeochemical assessment of environmental contamination

Description: Under Contract Number DE-AC08-90NV10845, the DOE has funded the Desert Research Institute (DRI) to examine several aspects of remote sensing, specifically with respect to how its use might help support Environmental Restoration and Waste Management (ERWM) activities at DOE sites located throughout the country. This report represents partial fulfillment of DRI`s obligations under that contract and includes a review of relevant literature associated with remote sensing studies and our evaluation … more
Date: January 1, 1993
Creator: Wickham, James; Chesley, Matthew; Lancaster, Judith & Mouat, David
Item Type: Refine your search to only Report
open access

Transport of sorbing solutes in randomly heterogeneous formations: Spatial moments, macrodispersion, and parameter uncertainty

Description: Expressions for the spatial moments and macrodispersion tensor for sorbing solutes in heterogeneous formations were presented using a probabilistic model of a fluid residence time coupled with the particle position analysis. The fluid residence time was defined as a fraction of the actual time during which the particle stayed in the mobile fluid phase of the aquifer. The fluid residence time is a random variable whose variability comes as a result of the non-equilibrium sorption properties. The… more
Date: June 1993
Creator: Andricevic, Roko
Item Type: Refine your search to only Report
open access

Tritium activities in selected wells on the Nevada Test Site

Description: Literature and data were reviewed related to radionuclides in groundwater on and near the Nevada Test Site. No elevated tritium activities have been reported outside of the major testing regions of the Nevada Test Site. Three wells were identified as having water with above-background (>50 pCi/l) tritium activities: UE-15d Water Well; USGS Water Well A; and USGS Test Well B Ex. Although none of these wells have tritium activities greater than the Nevada State Drinking Water standard (20,000 pCi… more
Date: May 1, 1993
Creator: Lyles, Brad F.
Item Type: Refine your search to only Report
open access

A two-dimensional simulation of tritium transport in the vadose zone at the Nevada Test site

Description: The site of a 0.75-kiloton underground nuclear explosion, the Cambric event, was selected for the study of radionuclide transport in the hydrologic environment. Water samples from RNM-2S, a well located 91 m from Cambric, have been analyzed for tritium and other radionuclides since the initiation of pumping. Water from RNM-2S flows to Frenchman Lake via an unlined canal. Flume data indicate canal transmission losses of approximately 2m{sup 3}/day/meter of canal. To determine if infiltrating can… more
Date: September 1, 1994
Creator: Ross, Wyn C. & Wheatcraft, Stephan W.
Item Type: Refine your search to only Report
open access

Wellhead protection area delineation under uncertainty

Description: A program to protect groundwater resources used for water supply from all potential threats due to contamination was established in the Amendments to the Safe Drinking Water Act (SDWA). Goal of the State Wellhead Protection (WHP) Program is to ``protect wellhead areas within their jurisdiction from contaminants which may have any adverse effect on the health of persons.`` A major component of WHP is the determination of zones around water-supply wells called Wellhead Protection Areas (WHPAs) wi… more
Date: September 1, 1994
Creator: Jacobson, Elizabeth; Andricevic, Roko & Hultin, Thomas
Item Type: Refine your search to only Report
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