Santa Cruz 1/sup 0/ x 2/sup 0/ NTMS area, California: data report (abbreviated)

Technical Report · Wed Jul 01 04:00:00 EDT 1981

OSTI ID:6213832

Cook, J R

This abbreviated data report presents results of ground water and stream/surface sediment reconnaissance in the National Topographic Map Series (NTMS) Santa Cruz 1/sup 0/ x 2/sup 0/ quadrangle. Surface sediment samples were collected at 1270 sites, at a target sampling density of one site per 13 square kilometers (five square miles). Ground water samples were collected at 636 sites. Neutron activation analysis (NAA) results are given for uranium and 16 other elements in sediments, and for uranium and 9 other elements in ground water. Mass spectrometry results are given for helium in ground water. Field measurements and observations are reported for each site. Analytical data and field measurements are presented in tables and maps. Uranium concentrations in the sediments which were above detection limits ranged from 0.10 to 51.2 ppM. The mean of the logarithms of the uranium concentrations was 0.53. A group of high uranium concentrations occurs near the junctions of quadrangles AB, AC, BB, and BC. A line of high uranium concentrations in the San Joaquin Valley is most likely precipitated uranium, either from the weathering of rocks in the area or from fertilizer.

• Research Organization: Du Pont de Nemours (E.I.) and Co., Aiken, SC (USA). Savannah River Lab.
• DOE Contract Number: AC09-76SR00001
• OSTI ID: 6213832
• Report Number(s): GJBX-314-81; DPST-81-146-16; ON: DE82000628
• Country of Publication: United States
• Language: English

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