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West Valley Demonstration Project - North Plateau Strontium-90

January 1, 2014 - 12:00pm


US Department of Energy Groundwater Database
Groundwater Master Report

InstallationName, State: West Valley Demonstration Project, NY
Responsible DOE Office: Office of Environmental Management
Plume Name: North Plateau Strontium-90
Remediation Contractor: CH2M Hill Babcock and Wilcox West Valley, LLC (CHBWV)
PBS Number: OH-WVDP-0040.01.1
Report Last Updated: 2014



Halogenated VOCs/SVOCs Present?: No



Fuel Present? No
Metals Present? No
Isotopes Present? Yes
Explosives Present? No
Other Contaminants? No
Tritium Present? No
Nitrates Present? No
Sulfates Present? No


Isotope Name Concentration (pCi/l) Regulatory Driver Cleanup Requirement
Sr 100,000 No  



Conduit Flow? No Depth (feet): 3
Multiple Units Affected? No Avg Velocity (feet/year): 61


Plume Information

Source: Controlled Area of Plume (acres): 10
Plume Status: Plume expanding but not expected to migrate offsite    


Remedial Approach

Remedy Name Status Start Date End Date Treatment Status
permeable treatment wall Confirmed 2010 2030 Performing as expected
pump and treat Completed 1995 2013 Performing as expected


Groundwater Use / Exit Strategy

Potable? No Does an Exit Strategy Exist? No
Sole Source Aquifer?  Yes Basis for Exit Strategy:  


Environmental Indicators (EIs)

Groundwater Migration Under Control? Yes Current Human Exposure Acceptable? Yes
Confirmed by Lead Regulator? No Confirmed by Lead Regulator? No



Decision Document Status? Assessment Ongoing Lead Regulatory Agency: Other
Date Approved:   Regulatory Driver: Other
Regulatory Position on Groundwater Use Same as Site? Yes



The plume is not expected to migrate offsite of the Western New York Nuclear Service Center, 3,300 acres.
Downgradient contamination that existed prior to installation of the Permeable Treatment Wall (PTW) in 2010, which was designed to contain
the 10,000 pCi/L activity, is expanding spatially but overall the downgradient plume is dissipating. Final remediation options will be evaluated in a
Supplemental Environmental Impact Statement scheduled to be completed in 2020.
A pump and treat system operated from 1995 to 2013. Permanent shutdown is under evaluation.
Confirmed by Lead Regulator is No, as the contaminant is managed to a DOE order.