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Site Report: Eielson AFB (SS521) Bldg 1161 Flightline Ave CITS

Site Name: Eielson AFB (SS521) Bldg 1161 Flightline Ave CITS
Address: 2615 Flightline Avenue, Eielson AFB, AK 99702
File Number: 107.38.132
Hazard ID: 25744
Status: Active
Staff: Axl LeVan, 9074512156 axl.levan@alaska.gov
Latitude: 64.673204
Longitude: -147.095212
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

Petroleum contamination at Eielson AFB former Building 1161 (currently 2615 Flightline Ave) from an unknown source. Monitoring well 1 is 50 feet north of Bldg 1161, MW-2 is 100 feet east of Bldg 1161 and upgradient of MW-1. The 2005 Final Site Characterization Report describes soil and groundwater sampling. RRO has been detected in MW-1 up to 3.51 mg/L, above DEC cleanup levels; total xylenes and DRO were also detected in MW-1 but at concentrations below DEC cleanup levels. RRO, DRO, and total xylenes were detected in MW-2 at levels below DEC cleanup levels. All soil concentrations to date are below DEC cleanup levels. RRO concentrations are qualified due to lack of quality control testing. Chromatograms have been used in attempting to show biogenic interference as a source of sampling results, but have proven inconclusive to date. Update 2022 A construction project for the site encountered Pentachlorophenol (PCP), Perfluorooctanesulfonic Acid (PFOS), Perfluorooctanoic Acid (PFOA) and Trichloroethene (TCE) above applicable DEC cleanup levels in surface soils (0-2 feet) on the site.

Action Information

Action Date Action Description DEC Staff
10/6/2011 Site Added to Database A new site has been added to the database Mitzi Read
10/6/2011 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 79188 name: Eielson AFB Bldg. 1161 Flightline Avenue CITS James Ward
9/4/2015 Update or Other Action Site is included in Non-OU RI/FS Management Plan. Preliminary 2015 sampling results indicate PCP and PCE/TCE. Field Change Form approved on 9/4/2015 for further sampling. Eric Breitenberger
9/22/2015 CERCLA RI Plan Approved Joint approval issued by EPA and DEC for the final "Remedial Investigation / Feasibility Study Management Plan For Non-Operable Unit Source Areas, Eielson Performance-Based Remediation, Eielson Air Force Base, Alaska" dated September 2015 (Non-OU RI/FS MP). The Non-OU RI/FS MP describes planned remedial investigations at 17 contaminated sites at Eielson Air Force Base, including SS521. Melinda Brunner
9/22/2015 CERCLA RI Plan Approved DEC and EPA jointly approved the "2015 Annual Field Sampling Plan, Eielson Performance-Based Remediation, Eielson Air Force Base, Alaska" dated September 2015 (FSP). The FSP describes remedial investigations planned for 2015 at 21 contaminated sites at Eielson Air Force Base, including SS521. The FSP is meant to be used in conjunction with the appropriate remedial investigation/feasibility study (RI/FS) management plan(i.e. Non-OU) and the Programmatic Quality Assurance Project Plan. Melinda Brunner
10/28/2016 Document, Report, or Work plan Review - other DEC Reviewed the Non-OU RI/RA report. This report included the characterization of multiple sites. Monte Garroutte
4/25/2017 Update or Other Action DEC reviewed and provided comments on the Draft Programmatic Quality Assurance Project Plan, Addendum No. 2, Eielson Air Force Base, Alaska (March, 2017). John O'Brien
10/28/2017 Document, Report, or Work plan Review - other DEC reviewed and provided comments on the Draft 2015 Remedial Investigation/Risk Assessment Report for Non-Operable Unit Source Areas, Eielson AFB, Alaska [August 2016]. John O'Brien
8/20/2018 Document, Report, or Work plan Review - other DEC reviewed and provided comments on the "Draft Remedial Investigation/Risk Assessment Report for Non-Operable Unit Source Areas SO072, TU076, SS085, SS521, and SO524, Eielson Air Force Base, Alaska," dated May 2018. Bri Clark
9/3/2019 Update or Other Action DEC provided a response to the Air Force responses to DEC comments for the Remedial Investigation/Risk Assessment Report for Non-Operable Unit Source Areas SO072, TU076, SS085, SS521, and SO524, Eielson Air Force Base, Alaska, Final, June 2019. DEC recommended a comment resolution meeting with the Air Force and EPA Remedial Project Managers and contractors to resolve remaining issues, agree to any required revisions and finalize the document. Dennis Shepard
1/21/2021 Document, Report, or Work plan Review - other DEC received a response to comments and a draft final version of the Non-OU Remedial Investigation - Risk Assessment report. The report presents the human health risk assessment, including methods, parameters, and results to support the Eielson Air Force Base performance-based remediation (PBR) project. Dennis Shepard
3/15/2021 CERCLA RI Report Approved The EPA and DEC approved the Final Revision 2 Remedial Investigation/Risk Assessment Report for Non-OU Source Areas SO072, TU076, SS085, SS521 and SO524, EAFB (March 2021). The report summarizes the remedial investigation (RI)/risk assessment (RA) activities at non-operable unit (OU) source areas SO072, TU076, SS085, SS521 and SO524 on Eielson Air Force Base (AFB) conducted from 2015 to 2017. Dennis Shepard
3/29/2022 Document, Report, or Work plan Review - other DEC provided review comments for the Closure Draft Report, FTQW 19-1003 Repair Parachute Shop Eielson Air Force Base, Alaska (dated February 2022). The Parachute Shop project consisted of renovating and repairing the building (B. 1161) and surrounding site. Soil excavation was limited to the extent required for construction. Soil excavated within the known petroleum contamination boundaries delineated by the USAF for this site was placed on five stockpiles and characterized by discrete sampling methods in accordance with the Alaska Department of Environmental Conservation Field Sampling Guidance (October 2019). Results of stockpile sampling indicated perfluorooctanoic acid (PFOS), Pentachlorophenol (PCP), and Diesel Range Organics (DRO) were present above applicable Method Two, Table B1 and Table B2 Soil Cleanup Levels. Dennis Shepard
7/12/2022 Document, Report, or Work plan Review - other DEC approved the Closure Final Report, FTQW 19-1003 Repair Parachute Shop, Eielson Air Force Base, Alaska (dated February 2022, Final Revision June 23, 2022). The Parachute Shop project consisted of renovating and repairing the building and surrounding site. Soil excavation was limited to the extent required for construction. Results of stockpile sampling indicated perfluorooctanoic acid (PFOS), Pentachlorophenol (PCP), and Diesel Range Organics (DRO) were present above applicable Method Two, Table B1 and Table B2 Soil Cleanup Levels. Dennis Shepard
8/29/2022 Document, Report, or Work plan Review - other DEC provided backcheck review comments for the Final Supplemental Remedial Investigation Work Plan, Eielson Air Force Base, Alaska (August 2022). The Supplemental Remedial Investigation (RI) Work Plan describes the 2022 RI activities to be conducted at Eielson Air Force Base, Alaska. The scope of the Supplemental RI is to address current data gaps at the CERCLA source areas on Eielson AFB for all operating units. Dennis Shepard
9/19/2022 CERCLA RI Plan Approved EPA and DEC provided a joint approval for the Final Supplemental Remedial Investigation Work Plan Eielson Air Force Base, Alaska (September 2022). The scope of this Supplemental RI is to address current data gaps at the CERCLA source areas on Eielson AFB. The data gaps are generally related to the incomplete characterization of site contaminants under the 2015-2021 Performance Based Remediation (PBR) and emerging contaminants identified since the 2015-2021 PBR. Axl LeVan

Contaminant Information

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State of Alaska Department of Environmental Conservation

P.O. Box 111800
Juneau, AK 99811-1800
Phone: 907-465-5066
Fax: 907-465-5245
TDD: 800-770-8973
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