COBRA Program - Navy Reserve Centers - Lincoln, NE

COBRA Program - RC Transformation in Nebraska (AFRC McCook, NE)

COBRA Program - RC Transformation in Nebraska (AFRC Kearney NE)

COBRA Program - RC Transformation in Nebraska (AFRC Greenlief NE)

COBRA Program - RC Transformation in Nebraska (AFRC Columbus, NE)

COBRA Program - RC Transformation in Nebraska (AFRC Beatrice, NE)

The Commodity Credit Corporation of the U.S. Department of Agriculture (CCC/USDA) operated a grain storage facility in Waverly, Nebraska, from 1952 to 1974. During this time, the grain fumigant '80/20' (carbon tetrachloride/carbon disulfide) was used to preserve stored grain. In 1982, sampling by the U.S. Environmental Protection Agency (EPA) found carbon tetrachloride contamination in the town's groundwater. After an investigation of the contaminant distribution, the site was placed on the National Priority List (NPL) in 1986, and the CCC/USDA accepted responsibility for the contamination. An Interagency Compliance Agreement between the EPA and the CCC/USDA was finalized in May 1988 (EPA 1990). The EPA (Woodward-Clyde Consultants, contractor) started immediate cleanup efforts in 1987 with the installation of an air stripper, a soil vapor extraction system, a groundwater extraction well, and groundwater and soil gas monitoring wells (Woodward-Clyde 1986, 1988a,b). After the EPA issued its Record of Decision (ROD; EPA 1990), the CCC/USDA (Argonne National Laboratory, contractor) took over operation of the treatment systems. The CCC/USDA conducted a site investigation (Argonne 1991, 1992a,b), during which a carbon tetrachloride plume in groundwater was discovered northeast of the former facility. This plume was not being captured by the existing groundwater extraction system. The remediation …

Appendix containing single-record data listings to accompany a report on aerial radiometric and magnetic survey of the Torrington and Casper quadrangles in Wyoming and Nebraska.

Documentation outlining characteristics of field data samples taken in the O'Neill quadrangle.

Data gathered at stream sediment sites in the O'Neill quadrangle, including applicable water chemistry measurements (e.g., pH, conductivity, alkalinity) and elemental analyses.

Data gathered at well water sites in the O'Neill quadrangle, including applicable water chemistry measurements (e.g., pH, conductivity, alkalinity), physical measurements (e.g., temperature, well description, scintillometer readings), and elemental analyses.

Disregard Restriction Header and Footer – Navy Reserve Centers - Lincoln, NE – Impacted Sites: NAVRESCEN_LINCOLN_NE, NE

Disregard Restriction Header and Footer - RC Transformation in Nebraska - Impacted Sites: AFRC Columbus; AFRC Greenlief; AFRC McCook; AFRC Beatrice; AFRC Kearney;

"Results of a reconnaissance geochemical survey of the O'neill Quadrangle are reported. Field and laboratory data are presented for 23 groundwater and 292 stream sediment samples. Statistical distributions and symbol plots for uranium and possible uranium-related variables are enclosed. A generalized geologic map and producing horizon map for the survey area are provided. Pertinent geologic factors that may be of significance in evaluating the potential for uranium mineralization are briefly discussed." (from Abstract)

"Results of a reconnaissance geochemical survey of the Broken Bow Quadrangle, Nebraska are reported. Statistical data and aerial distributions for uranium-related variables are presented for 578 groundwater and 442 stream sediment samples. Also included is a brief discussion on location and geology." (from Abstract)

Tables presenting well water, stream sediment and field data for samples collected from the Broken Bow Quadrangle for a reconnaissance geochemical survey.