Remedy Plan Updates

Status Update on Temporary Systems

Since the discovery of perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) in the groundwater of the community of Moose Creek, the USAF has supplied bottled water to all the residents of the community, under an emergency action. Temporary water supply systems were then installed under what is called a Time Critical Removal Action (TCRA). The USAF has installed 164 temporary supply systems, either drinking water treatment or storage tanks for the residents of the community of Moose Creek. All properties who have requested a temporary water supply system have had their installations completed. The USAF will continue to monitor and collect water samples from residences with treatment systems and deliver water to residences with storage tanks to ensure safe drinking water is available.

Status Update on Long-Term Water Supply

PFOS and PFOA are treated as pollutants or contaminants under the Comprehensive Environmental Response, Compensation and Liability Act of 1980 (CERCLA). The USAF remedial action for these contaminants follows this process. The main steps are shown in Figure 1.

The USAF is conducting an Expanded Site Inspection at Eielson AFB and the surrounding area to identify the extent of PFOS/ PFOA contamination. However, an accelerated program to provide a long-term solution for a safe and reliable drinking water
supply for the residents of Moose Creek is also being conducted, this is called an interim solution. The resulting interim remedial action will only address the issue of supply of safe drinking water

The CERCLA process will continue to investigate contamination from PFOS and PFOA and this will be addressed by separate studies that will result in the Final Record of Decision (ROD). This interim remedial action will however provide a permanent solution for the supply of safe drinking water to the community of Moose Creek.

Figure 1 – CERCLA Process