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U.S. Department of Energy
Office of Scientific and Technical Information

Remedial action plan and site design for stabilization of the inactive Uranium Mill Tailings Site at Lowman, Idaho. Attachment 4, Water resources protection strategy: Final report

Technical Report ·
DOI:https://doi.org/10.2172/10134680· OSTI ID:10134680

The DOE proposes to achieve compliance with the proposed EPA groundwater protection standards (Subparts A and B of 40 CFR 192) by meeting the EPA maximum concentration limits (MCLs) or background concentrations for designated hazardous constituents in groundwater in the uppermost aquifer (alluvium/weathered granodiorite) at the point of compliance (POC) at the Lowman disposal site near Lowman, Idaho. The proposed remedial action in conjunction with existing hydrogeological conditions at the Lowman site will ensure sufficient protection of human health and the environment. The DOE has concluded that the EPA groundwater protection standards will be met at the POC because, with the exception of antimony, none of the hazardous constituents that exceed laboratory method detection limits within the radioactive sand pore fluids were above the proposed concentration limits. The DOE has demonstrated that antimony will meet the proposed concentration limits at the POC through attenuation in subsoils beneath the disposal cell and by dilution in groundwater underflow. The Lowman processing site is in compliance with Subpart B of 40 CFR 192 because statistical analyses of groundwater samples indicate no groundwater contamination.

Research Organization:
USDOE Albuquerque Operations Office, NM (United States). Uranium Mill Tailings Remedial Action Project Office
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
FC04-85AL20535
OSTI ID:
10134680
Report Number(s):
DOE/UMTRA--050512-0000-Attach.4; ON: DE93009147
Country of Publication:
United States
Language:
English