Site observational work plan for the UMTRA Project site at Spook, Wyoming

Technical Report · Thu Sep 01 00:00:00 EDT 1994

DOI:https://doi.org/10.2172/10188379· OSTI ID:10188379

Ground water in the uppermost aquifer beneath and downgradient from the Spook site was contaminated by uranium-processing activities that occurred from 1962 until 1966. Contamination from the tailings pile and the acid pond (including uranium, selenium, nitrate, and radium-226 and -228) leached into the subsurface by infiltration and migrated into ground water, forming a plume extending approximately 2,500 feet (ft) (760 meters [m]) downgradient from the site. The surface remedial action at the Spook site under Subpart A of 40 CFR Part 192 consisted of stabilizing the uranium mill tailings and other residual radioactive materials in a disposal cell in the bottom of the Spook open-pit mine and covering the cell with overburden material. The ground water protection strategy was supplemental standards based on Class 3 ground water in the uppermost aquifer because of widespread ambient contamination. The proposed ground water protection strategy to comply with Subpart B of 40 CFR Part 192 at the Spook site is to perform no remediation. This strategy is based on ground water in the uppermost aquifer (also the zone of contamination) being classified as Class 3, which allows the application of supplemental standards. Class 3 ground water beneath the Spook site is neither a current nor a potential source of drinking water because of widespread, ambient contamination that cannot be cleaned up using treatment methods reasonably employed in public water supply systems.

• Research Organization: Jacobs Engineering Group, Inc., Albuquerque, NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-91AL62350
• OSTI ID: 10188379
• Report Number(s): DOE/AL/62350-156; ON: DE95001258; BR: EW2010102/EX2040010; TRN: 94:021103
• Resource Relation: Other Information: PBD: Sep 1994
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
54 ENVIRONMENTAL SCIENCES
WYOMING
SPOIL BANKS
GROUND WATER
DECONTAMINATION
REMEDIAL ACTION
ENVIRONMENTAL EFFECTS
LEACHING
PLANNING
COMPILED DATA
CHEMICAL EFFLUENTS
RADIOACTIVE EFFLUENTS
FEED MATERIALS PLANTS
054000
540250
HEALTH AND SAFETY
SITE RESOURCE AND USE STUDIES