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Geohydrologic Factors and Current Concepts Relevant to Characterization of a Potential Nuclear Waste Repository Site in Columbia River Basalt, Hanford Stte, Washington

Published online by Cambridge University Press:  25 February 2011

R.E. Gephart ,
S.M. Price ,
R.L. Jackson  and
C.W. Myers
R.E. Gephart
Affiliation:
Rockwell Hanford Operations, P.O. Box 800, Richland, WA 99352
S.M. Price
Affiliation:
Rockwell Hanford Operations, P.O. Box 800, Richland, WA 99352
R.L. Jackson
Affiliation:
Rockwell Hanford Operations, P.O. Box 800, Richland, WA 99352
C.W. Myers
Affiliation:
Los Alamos National Laboratory, P.O. 1663, Mail Stop D461, Los Alamos, NM 87545
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Abstract

Geologic features are identified that may affect groundwater movement near a repository located in the Columbia River basalt beneath the Hanford Site, Washington State. These include pathways through flow interiors, flow contacts, and bedrock structural discontinuities. Four concepts are considered to describe groundwater movement in basalt. Differences between concepts principally focus on the degree of vertical leakage through basalt flow interiors. The existing geohydrologic data base is preliminary and insufficient to conclusively support one groundwater-flow concept over another. However, it is proposed that available data tend to support the existence of distinct groundwater-flow systems having relatively low vertical leakage under low hydraulic-head gradients except where structural discontinuities are present. A number of geohydrologic characterization activities are underway to reduce the Present uncertainty regarding potential groundwater pathways.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 26: Symposium D – Scientific Basis for Nuclear Waste Management VII , 1983 , 85
Copyright
Copyright © Materials Research Society 1984

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References

REFERENCES

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