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Idaho National Laboratory - WAG-1

January 1, 2014 - 12:00pm

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US Department of Energy Groundwater Database
Groundwater Master Report

Installation Name, State: Idaho National Laboratory, ID
Responsible DOE Office: Office of Nuclear Energy
Plume Name: WAG-1
Remediation Contractor: CWI
PBS Number: 30
Report Last Updated: 2014

 

Contaminants

Halogenated VOCs/SVOCs Present?: Yes

 

VOC Name Concentration (ppb) Regulatory Driver Cleanup Requirement
PCE 21 Yes 5
TCE 1272 Yes 5
VC 7 Yes 2
cis-1,2-DCE 181 Yes 100
trans-1,2-DCE 146 Yes 70

 

Isotope Name Isotope Activity (pCi/l) Regulatory Driver Cleanup Requirement
Cs 6180 Yes 119
Sr 1230 Yes 8

 

Tritium Present Activity (pCi/l) Regulatory Driver Cleanup Requirement
Yes 2280 Yes 20,000

 

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

 

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 expanding but not expected to migrate offsite    

 

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: 2001 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 than 1 x 10-4 risk, and hazard index of less than one.

 

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