Subsurface characterization and geohydrologic site evaluation West Chestnut Ridge site

Technical Report · Wed Jan 25 04:00:00 EST 1984

DOI:https://doi.org/10.2172/5288256· OSTI ID:5288256

The West Chestnut Ridge Site at the Oak Ridge National Laboratory is being considered for use as a repository for low-level radioactive waste. The purposes of this study were to provide a geohydrological characterization of the site for use in pathways analysis, and to provide preliminary geotechnical recommendations that would be used for development of a site utilization plan. Subsurface conditions were investigated at twenty locations and observation wells were installed. Field testing at each location included the Standard Penetration Test and permeability tests in soil and rock. A well pumping test was ocmpleted at one site. Laboratory testing included permeability, deformability, strength and compaction tests, as well as index and physical property tests. The field investigations showed that the subsurface conditions include residual soil overlying a weathered zone of dolomite which grades into relatively unweathered dolomite at depth. The thickness of residual soil is typically 80 ft (24 m) on the ridges, but can be as little as 10 ft (3 m) in the valleys. Trench excavations to depths of 30 ft (9 m) should not present serious slope stability problems above the water table. On-site soils can be used for liners or trench backfill but these soils may require moisture conditioning to achieve required densities. 19 figures, 8 tables.

• Research Organization: Woodward-Clyde Consultants, Wayne, NJ (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5288256
• Report Number(s): ORNL/Sub-83-64764/1-V1; ON: DE84007471
• Country of Publication: United States
• Language: English

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RADIOACTIVE WASTE DISPOSAL
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