Site-specific analysis of the cobbly soils at the Grand Junction processing site. [Uranium Mill Tailings Remedial Action (UMTRA) Project]
This report describes a recent site-specific analysis to evaluate the necessity of a recommendation to install a slurry trench around the Grand Junction processing site. The following analysis addresses the cobbly nature of the site's radiologically contaminated foundation soil, reassesses the excavation depths based on bulk radionuclide concentrations, and presents data-based arguments that support the elimination of the initially proposed slurry trench. The slurry trench around the processing site was proposed by the Remedial Action Contractor (RAC) to minimize the amount of water encountered during excavation. The initial depths of excavation developed during conceptual design, which indicated the need for a slurry wall, were reexamined as part of this analysis. This reanalysis, based on bulk concentrations of a cobbly subsoil, supports decreasing the original excavation depth, limiting the dewatering quantities to those which can be dissipated by normal construction activities. This eliminates the need for a slurry trench andseparate water treatment prior to permitted discharge.
- Research Organization:
- USDOE Albuquerque Field Office, NM (United States). Uranium Mill Tailings Remedial Action Project Office
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-91AL62350
- OSTI ID:
- 6644419
- Report Number(s):
- DOE/UMTRA-050128-0000; ON: DE93010392
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
54 ENVIRONMENTAL SCIENCES
540230 -- Environment
Terrestrial-- Radioactive Materials Monitoring & Transport-- (1990-)
540250 -- Environment
Terrestrial-- Site Resource & Use Studies-- (1990-)
ABANDONED SITES
COLORADO RIVER
CONTAMINATION
EXCAVATION
GROUND WATER
HYDROGEN COMPOUNDS
MILL TAILINGS
MONITORING
OXYGEN COMPOUNDS
RADIATION MONITORING
REMEDIAL ACTION
REMOVAL
RIVERS
SITE CHARACTERIZATION
SOILS
SOLID WASTES
STREAMS
SURFACE WATERS
TAILINGS
WASTES
WATER