Document Details


Title:
Groundwater Quality Assessment for the Bear Creek Hydrogeologic Regime at the Y-12 Plant: Data Interpretations and Proposed Program Modifications
Subject Terms:
Bear Creek Burial Grounds; Oil Landfarm WMA; S-3 Site, Rust Spoil Area; hydrogeologic, groundwater; quality assessment, BCHR; radionuclides, trace metals; volatile organics, nitrate
Document Location:
DOE INFORMATION CENTER 1 Science.gov Way, Oak Ridge, TN 37831; Eva Butler; Phone: 865-241-4780; Toll-Free: 800-382-6938, Option 6; FAX: 865-574-3521; Email: doeic@oro.doe.gov
Document Categories:
Health, Safety and Environment\Waste Management; Science and Technology\Geology, Hydrology, Seismology, Site Studies
Document Type:
REPORT
Publication Date:
1991 Jun 30
Declassification Status:
Never classified
Document Pages:
93
Accession Number:
ORF65904
Document Number(s):
Y/SUB/91-YP507C/1 -; Part 2; ER005622; Part2
Originating Research Org.:
Martin Marietta Energy Systems, Incorporated
OpenNet Entry Date:
1998 Jun 16
Description/Abstract:
This report contains a groundwater quality assessment for the Bear Creek Hydrogeologic Regime (BCHR) at the Y-12 Plant. The primary groundwater contaminants in the BCHR are nitrate, volatile organic compounds (VOCs), radionuclides, and to a lesser degree, trace metals. The S-3 Site is the primary source of nitrate although a separate, much smaller source located northeast of the Oil Landfarm Waste Management Area (WMA) is suggested by the 1989 and 1990 monitoring data. Data obtained in 1990 further confirm that the S-3 Site, the Rust Spoil Area, the Oil Landfarm WMA, and Bear Creek Burial Grounds WMA are sources of VOCs. In addition, evidence of VOC sources upgradient of the Rust Spoil Area, possibly Spoil Area I, are also indicated. The S-3 Site is the primary source of trace metals and radionuclides. Recommendations for the BCHR 1991 groundwater quality assessment program were a reduction of 37 wells in the well network used for monitoring; groundwater samples will be analyzed for a suite of parameters; plume delineation and exit pathway groundwater and surface water monitoring will be the focus of the 1991 assessment monitoring program; and installation of the exit-pathway monitor well network in the BCHR will be continued in 1991. Figures, tables, and maps are included.


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