| Action Date |
Action |
Description |
DEC Staff |
| 2/12/2019 |
Site Added to Database |
A new site has been added to the database |
Mitzi Read |
| 5/22/2019 |
Document, Report, or Work plan 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 |
| 9/20/2019 |
CERCLA SI |
The U.S. Environmental Protection Agency (EPA) and Alaska Department of Environmental Conservation (DEC)jointly approved the Expanded Perfluorooctanoic Acid (PFOA) and Perfluorooctanesulfonic Acid (PFOS) Site Inspection at Eielson Air Force Base and Moose Creek Uniform Federal Policy-Quality Assurance Project Plan Work Plan (September 2019). Soil and groundwater delineation activities for PFOS and PFOA on Eielson AFB and in the areas in and around Moose Creek, Alaska will be undertaken.. |
Dennis Shepard |
| 8/11/2020 |
Meeting or Teleconference Held |
DEC, EPA and Air Force remedial project managers met to scope a remedial investigation for the per and poly fluorinated alkyl substances (PFAS) contaminated source areas on Eielson Air Force Base. Sample collection of soil, groundwater, surface water, sediments and biota were discussed. The Air Force confirmed that a contract for the work was awarded on August 4, 2020, and work plans are being prepared. |
Dennis Shepard |
| 1/29/2021 |
Document, Report, or Work plan Review - other |
DEC received a draft Quality Assurance Project Plan, Remedial Investigation (RI) for PFAS at Various Sites, Eielson AFB, Alaska. The purpose of the RI is to characterize the nature and extent of 24 PFAS compounds, specifically perfluorooctane sulfonate (PFOS),perfluorooctanoic acid (PFOA), and Perfluorobutane sulfonic acid (PFBS) through the application of adaptive high-resolution site characterization and the development of a flux-based conceptual site model.The outcome of the RI will be (1) flux-based ranking of sources and mapping of migration pathway(s), and (2) delineation of soil, groundwater, sediment, and surface water impacts. |
Dennis Shepard |
| 12/30/2021 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 80360 name: AFFF Area #14 Thunderdome Bldg 1140 (EP303) |
Dennis Shepard |
| 4/27/2022 |
Meeting or Teleconference Held |
DEC met with the Air Force and contractor and with EPA to discuss the ongoing PFAS RI scope of work for the validated PFAS source areas. Status of the results from borings installed in 2021 was discussed and horizontal step-outs and vertical step-downs were proposed. |
Dennis Shepard |
| 4/29/2022 |
Document, Report, or Work plan Review - other |
DEC and EPA approved the Field Change Form #9 (FCF-RI-9) for the Remedial Investigation (RI) for per- and polyfluoroalkyl substances (PFAS) at Various Sites at the Eielson Air Force Base (EAFB) in Fairbanks North Star Borough, Alaska. The FCF proposed stepout boring locations for the PFAS remedial investigation. |
Dennis Shepard |
| 5/24/2022 |
Document, Report, or Work plan Review - other |
A Triad meeting was held to review sample results from transects of borings installed for the PFAS RI, and to select locations for step-outs or step-downs based on the sampling results to date. |
Dennis Shepard |
| 6/13/2022 |
Document, Report, or Work plan Review - other |
DEC and EPA approved the Field Change Form #12 (FCF-RI-12) for the Remedial Investigation (RI) for per- and polyfluoroalkyl substances (PFAS) at Various Sites at the Eielson Air Force Base (EAFB) in Fairbanks North Star Borough, Alaska. The FCF proposed stepout boring locations for the PFAS remedial investigation. |
Dennis Shepard |
| 6/23/2022 |
Document, Report, or Work plan Review - other |
DEC and EPA approved the Field Change Form #13 (FCF-RI-13) for the Remedial Investigation (RI) for per- and polyfluoroalkyl substances (PFAS) at Various Sites at the Eielson Air Force Base (EAFB) in Fairbanks North Star Borough, Alaska. The FCF proposed a revised stepout boring location for the PFAS remedial investigation. |
Dennis Shepard |
| 7/18/2022 |
Document, Report, or Work plan Review - other |
DEC and EPA approved the Field Change Form #14 (FCF-RI-14) for the Remedial Investigation (RI) for per- and polyfluoroalkyl substances (PFAS) at Various Sites at the Eielson Air Force Base (EAFB) in Fairbanks North Star Borough, Alaska. The FCF proposed stepdown depths for boring locations for the PFAS remedial investigation. |
Dennis Shepard |
| 7/18/2022 |
Document, Report, or Work plan Review - other |
A Triad meeting was held to review sample results from transects of borings installed for the PFAS RI, and to select locations for step-outs or step-downs based on the sampling results to date. |
Dennis Shepard |
| 9/6/2022 |
Document, Report, or Work plan Review - other |
A Triad meeting was held to review sample results from transects of borings installed for the PFAS RI, and to select locations for step-outs or step-downs based on the sampling results to date. |
Dennis Shepard |
| 9/19/2022 |
Document, Report, or Work plan Review - other |
DEC and EPA approved the Field Change Form #15 (FCF-RI-15) for the Remedial Investigation (RI) for per- and polyfluoroalkyl substances (PFAS) at Various Sites at the Eielson Air Force Base (EAFB) in Fairbanks North Star Borough, Alaska. The FCF proposed revised step-out boring locations for the PFAS remedial investigation. |
Dennis Shepard |
| 9/19/2022 |
Document, Report, or Work plan Review - other |
DEC and EPA approved the Field Change Form #10 (FCF-RI-10) for the Remedial Investigation (RI) for per- and polyfluoroalkyl substances (PFAS) at Various Sites at the Eielson Air Force Base (EAFB) in Fairbanks North Star Borough, Alaska. The FCF proposed stepout boring locations and updated worksheets #17 & #18 of the approved work plan for the PFAS remedial investigation. |
Dennis Shepard |
