Addendum_to_Site_Visit_Slides_Final_23_Oct_13.pdf

NFA Sites (Priority 2)

Site Description

The Priority Two NFA sites consist of five IRP sites, DP012, OT016, OT017, DP022, and DP024. The OU‐3 ROD (USAF, September 1995) was signed in December 1995 designated these five sites as NFA based on unlimited use of the sites without restrictions on future land use.

However, site closure documentation is required to officially bring the sites to SC.

• DP012, OT016, OT017, DP022, and DP024

NFA Sites (Priority 3)

Site Description

The Priority Three NFA sites consist of six IRP sites, AOC01, AOC02, SS‐33, SD‐34, ST‐35, and SD‐38. Dig and haul excavations were perform at sites that required remedial action in 1998. That year, the WA Dept of Ecology stated they had determined that the removal appears to have adequately addressed the contamination previously identified at the sites and Ecology has determined that no further action is necessary. However, a final determination of no further action for the sites will have to undergo the remedy selection process. Also that same year, Region 10 EPA stated that the removal activities undertaken at these sites have adequately addressed contamination at these areas. A final no further action decision for these sites cannot be made officially until the proposed plan and Record of Decision process is completed for the sites.

• AOC01, AOC02, SS033, SD034, ST035, and SD038