Hydrogeochemical and stream sediment reconnaissance: eastern United States. Savannah River Laboratory quarterly report, October--December 1976

Technical Report · Thu Jan 01 04:00:00 EST 1976

DOI:https://doi.org/10.2172/7333406· OSTI ID:7333406

Contracts were issued for collection of approximately 22,500 ground water samples. Final quality assurance evaluation of sampling subcontractor performance was completed. Orientation sampling was completed in the Sussex County, New Jersey, area. Thorium and hafnium analyses were shown to be very important in interpretation of uranium distribution in sediments from the Kings Mountain, North Carolina, area. A 15-month study of seasonal variability in Oconee, South Carolina, and Brush Creek, North Carolina, showed no effects outside the range of normal sampling and analytical uncertainty. Concentration of dissolved ions on specially prepared ion exchange resin was studied. Total sampling and analytical error was less than 25 percent for uranium concentrations >100 parts per trillion (pptr). Greater than 90 percent recovery was observed for the 17 elements analyzed. Routine preparation of sediment samples was begun by one subcontractor at a rate of 1500 samples per month. Procedures were developed and tested for 24-hour daily automated operation of the NAA facility, and simulated malfunction tests were completed. Recommended elemental values were established for sediment sample SRL-2, which will be used as a routine quality assurance standard. A contract was issued for the preparation and analysis of 1950 sediment samples and standards using reading emission spectroscopy. The ARCHIVE module of the Sample Inventory and Control System (SICS) was completed; programming to write sample accounting reports is in progress. The digitizer for automatically calculating sample coordinates was interfaced with the SRL-NURE Data Management System (NDMS). Routine use of the digitizer was begun. Thirteen new scrub parameters were added to the INPUT module of NDMS. Full-size symbol plot map overlays (for 1/sup 0/ x 2/sup 0/ sheets) have been produced from computer-generated microfilm. Alternative output options are being evaluated.

• Research Organization: Du Pont de Nemours (E.I.) and Co., Aiken, SC (USA). Savannah River Lab.
• DOE Contract Number: E(07-2)-1
• OSTI ID: 7333406
• Report Number(s): GJBX-6(77); DPST-76-138-4
• Country of Publication: United States
• Language: English

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