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Idaho National Laboratory - WAG-1

January 1, 2009 - 12:00pm

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US Department of Energy Groundwater Database
Groundwater Master Report

Installation Name, State: Idaho National Laboratory
Responsible DOE Office: Office of Nuclear Energy
Plume Name: WAG-1
Remediation Contractor: CWI
Report Last Updated: 2009

 

Contaminants

Halogenated VOCs/SVOCs Present?: Yes

 

VOC Name Concentration (ppb) Regulatory Driver Cleanup Requirement
PCE 50 Yes 5
TCE 1375 Yes 5
VC 260 Yes 2
cis-1,2-DCE 553 Yes 70
trans-1,2-DCE 300 Yes 100

 

Isotope Name Isotope Activity (pCi/l) Regulatory Driver Cleanup Requirement
Cs 5218 Yes 119
Sr 3210 Yes 8

 

Fuel Present? No
Metals Present? No
Isotopes Present? Yes
Explosives Present? No
Other Contaminants? No
Tritium Present? Yes
Nitrates Present? No
Sulfates Present? No
Activity: 7150 (pCi/l)

 

Hydrogeology

Conduit Flow? No Depth (feet): 220
Mulitple Units Affected? No Avg Velocity (feet/year): 180

 

Plume Information

Source: Controlled Area of Plume (acres): 550
Plume Status: Plume static or shrinking in size    

 

Remedial Approach

Remedy Name Status Start Date End Date
In-situ bioremediation Confirmed 1998 2018
Monitored natural attenuation Confirmed 2001 2095
pump and treat Confirmed 2001 2018

 

Groundwater Use / Exit Strategy

Potable? Yes Does an Exit Strategy Exist? Yes
Sole Source Aquifer?  Yes Basis for Exit Strategy: Target Concentration

 

Environmental Indicators (EIs)

Groundwater Migration Under Control? Yes Current Human Exposure Acceptable? Yes
Confirmed by Lead Regulator? Yes Confirmed by Lead Regulator? Yes

 

Regulatory

Decision Document? Decision Document in Place Lead Regulatory Agency: Federal
Date Approved: 2004 Regulatory Driver: CERCLA
Regulatory Position on Groundwater Use Same as Site? Yes

 

Comments

ISB to treat source material. Pump and Treat to maintain containment in medial zone. Monitored natural attenuation to treat distal portion of plume. Basis for exit strategy: Monitored COC levels less than MCLs, less then 1 x 10-4 risk, and hazard index of less
than one.

 

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