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Site Report: Eielson AFB Polaris Lake AFFF


Site Name: Eielson AFB Polaris Lake AFFF
Address: SE Shoreline of Polaris Lake; ~0.13 mile E of Bldg 4870, Eielson AFB, AK 99702
File Number: 107.38.146
Hazard ID: 26627
Status: Active
Staff: Dennis Shepard, 9074512180 dennis.shepard@alaska.gov
Latitude: 64.687517
Longitude: -147.069815
Horizontal Datum:WGS84

We make every effort to ensure the data presented here is accurate based on the best available information currently on file with DEC. It is therefore subject to change as new information becomes available. We recommend contacting the assigned project staff prior to making decisions based on this information.

Problems/Comments

On August 11, 2016 during an Eielson Air Force Base Fire Department training exercise, an internal pump component of a fire suppression system failed releasing approximately 0.25 gallons of Aqueous Film Forming Foam (AFFF) concentrate to the southeast end of Polaris Lake and adjacent shoreline. Approximately 20 cubic feet of water and 250 square feet of shoreline were affected. Perfluorooctanoic acid (PFOA) and Perfluorooctanesulfonic acid (PFOS) were detected in surface water samples at levels of 16.6-19 ppt and 85.4-249 ppt, respectively. On October 3, 2016, DEC received analytical results for perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) sampling in Polaris Lake following an Aqueous Film Forming Foam (AFFF) release. Sample results were taken from the top, middle, and bottom sections of the Polaris Lake water column. The results for the top section of the water column are 16.6 parts per trillion (ppt) PFOA and 249 ppt PFOS. The results for the middle section of the water column are 18.5 ppt PFOA and 183 ppt PFOS. The results for the bottom section of the water column are 19.0 ppt PFOA and 85.4 ppt PFOS. Soil surrounding Polaris lake was also sampled for PFOA and PFOS did not have a detection.

Action Information

Action Date Action Description DEC Staff
10/3/2016 Update or Other Action DEC received analytical results for perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) sampling in Polaris Lake following an Aqueous Film Forming Foam (AFFF) release. Sample results were taken from the top, middle, and bottom sections of the Polaris Lake water column. The results for the top section of the water column are 16.6 parts per trillion (ppt) PFOA and 249 ppt PFOS. The results for the middle section of the water column are 18.5 ppt PFOA and 183 ppt PFOS. The results for the bottom section of the water column are 19.0 ppt PFOA and 85.4 ppt PFOS. Soil surrounding Polaris lake was also sampled for PFOA and PFOS did not have a detection. Bri Clark
10/11/2016 Spill Transferred from Prevention Preparedness and Response Program Spill transferred by PPR staff Kelley Tu. Spill no. 16309922401; substance = Aqueous Film Forming Foam (AFFF) concentrate; quantity = 0.25 gallons; source = fire suppression system; contaminant released to surface water body (Polaris Lake) and adjacent shoreline; PPR file no. 107.02.004. Mitzi Read
11/3/2016 Site Added to Database A new site has been added to the database Mitzi Read
3/1/2019 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 79983 name: Eielson AFB Polaris Lake AFFF Bri Clark
5/22/2019 Report or Workplan Review - Other DEC provided comments on a Draft Expanded PFOA and PFOS Site Inspection at Eielson Air Force Base and Moose Creek, Alaska, Uniform Federal Policy-Quality Assurance Project Plan Work Plan, Eielson Air Force Base, Alaska, May 2019. The plan includes installation of 24 monitoring well, groundwater sampling and stepout borings to identify monitoring well locations. Dennis Shepard

Contaminant Information

Name Level Description Media Comments

Control Type

Type Details

Requirements

Description Details

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