WAG 10 Proposed Plan Click on image to view plan

The agencies began the investigation -- called the Operable Unit 10-08 remedial investigation/feasibility study -- ­in 2004 to determine if contaminated plumes in the Snake River Plain Aquifer beneath the Site could join together (or commingle) to cause an unacceptable risk to people or the environment. Monitoring data from the investigation show that offsite populations will continue to remain safe from contaminants present in the aquifer today.

The study also investigated 83 surface sites for potential contamination. None of the sites pose a threat to groundwater, but two sites require cleanup. The two sites requiring cleanup contain lead, arsenic or mercury. Because Operable Unit 10-08 is intended to be the last Record of Decision for DOE’s Idaho Site, a process is proposed for addressing any contamination that may be discovered later. If the new site is similar to a site that has already been cleaned up, the same remedy could be used again.

A Proposed Plan is available electronically at https://idaho
cleanupproject.com/Portals/0/documents/MiscSites_PP_final.pdf or can be requested by calling (800) 708-2680. A 30-day public comment period runs through October 15, 2008. Public meetings to discuss the proposed plan will be held in Idaho Falls (Sept. 29 at the Shilo Inn) and Twin Falls (Sept. 30 at the College of Southern Idaho’s Taylor Student Union Building). Both meetings will take place from 6 to 8 p.m.

For further information, the public can access Operable Unit 10-08 documents in the Administrative Record at http://ar.inel.gov. The Administrative Record is also located at the INL Technical Library in Idaho Falls and the Albertson Library on the campus of Boise State University.