Site Report: Eielson AFB (SS068) (AOC 29) AAA Site

Site Name:	Eielson AFB (SS068) (AOC 29) AAA Site
Address:	Wabash Ave & Central Ave, NW of Base Gas Station, Eielson AFB, AK 99702
File Number:	107.38.101
Hazard ID:	2305
Status:	Active
Staff:	Axl LeVan, 9074512156 axl.levan@alaska.gov
Latitude:	64.687010
Longitude:	-147.098512
Horizontal Datum:	NAD83

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.

Site Chronology
IC / Closure Details
Documents
Associated Sites

Problems/Comments

The Anti-Aircraft Artillery (AAA) Site, also known as Area of Concern (AOC) 29 or SS68, is located at Wabash and Central Avenues. No structures remain and currently the site is used for recreation purposes. The site is approximately 1000 feet by 700 feet. Garrison Slough is approximately 300 feet downgradient from this site. This site is adjacent to the AAFES/BX/Base-Exchange Service Station (ADEC file 107.26.002). Diesel contamination was detected in subsurface soil and groundwater in 1993. Pesticides, polychlorinated biphenyls (PCBs) and polynuclear aromatic hydrocarbons (PAHs) were not detected. Further characterization completed in 1999-2000 confirmed only diesel contamination. Monitoring points MP-1 through MP-10, all located within 220 feet of the T-shaped concrete pad, had diesel range organics (DRO) concentrations up to 28.4 mg/L. Free product was found in MP-4. Monitoring point MP-11, which was 330 feet north of the T-shaped concrete pad, had a DRO concentration of 210 mg/L. This is thought to be part of a separate plume of contamination.

Action Information

Action Date	Action	Description	DEC Staff
2/18/2003	Update or Other Action	In February of 2003, Ann Farris provided additional comments on the 2000 site characterization and the Sept 2002 Proposed plan for this site. ADEC recommended further characterization of the two potential separate source areas and a determination of the amount and mobility of the product. DEC stated that the cleanup levels are listed in 18 AAC 75.345 and 18 AAC 75.340. DEC did not approve the proposed plan of long term monitoring and requested the site characterization be completed.	Emily Youcha
2/27/2003	Site Added to Database	DRO contamination on Eielson AFB.	Deborah Williams
10/11/2004	GIS Position Updated	Coordinates acquired by hand-held GPS during a site visit by Emily Youcha.	Torsten Ernst
12/20/2004	Meeting or Teleconference Held	Staff attended a meeting with the Air Force on December 15. ADEC recommended that AOC29 be addressed as soon as possible. ADEC reviewed the file for AOC29. A site characterization was conducted by AMEC (Draft Site Characterization for AOC29, December 2000). The ground-water investigation included installing temporary wells to examine the gradient and contaminant concentrations. DRO levels were detected above ADEC groundwater standards in wells MP-5 (11.5 mg/l), MP-7 (28.4 mg/l), and MP-11 (210 mg/l). The report states that MP-4 contained free product during each data collection event. The report also stated that the contamination in well MP-11 probably represents a second plume. ADEC requested that the Air Force re-evaluate this site.	Emily Youcha
6/24/2005	Update or Other Action	Staff recieved the 2005 workplan for sitewide monitoring. Site SS68/AOC29 was included in this report for monitoring at 2 locations. ADEC did not concur with the workplan and would like to see more characterization at this site. ADEC requested the Air Force install a well at the location of MP-4 and delineate the downgradient part of the plume near MW-11.	Emily Youcha
7/27/2005	Meeting or Teleconference Held	Staff participated in a meeting with Eielson AFB. Eielson will install two additional wells to determine whether there are 2 plumes at this site.	Emily Youcha
12/20/2005	Update or Other Action	Staff reviewed the 2000 site characterization report for this site. The consultant found that there were two areas DRO ground-water contamination at the site and one of the plumes has free product.	Emily Youcha
5/23/2006	Update or Other Action	Contaminated Sites staff commented on the final sitewide monitoring report for Eielson Air Force Base. Eielson collected ground-water samples from two locations at this site to verify the presence of contamination. DRO was detected at very high concentrations and NAPL is thought to be present. Staff determined that the characterization of a new Installation Restoration Program petroleum-contaminated site (SS68/AOC29) was inadequate and the Air Force conclusions of No Further Action were not justified. Staff requested a meeting with the Environmental Protection Agency and Air Force to discuss the Federal Facility Agreement for Eielson.	Emily Youcha
5/9/2008	Exposure Tracking Model Ranking	Initial ranking with ETM completed.	Janice Wiegers
1/18/2011	Update or Other Action	This entry contains only site-specific information. An informational site has been added to the database for actions that pertain to Eielson Air Force Base in its entirety. Please see ADEC file number 107.38.006/Hazard ID 25578/Eielson AFB Basewide Information.	Kathleen Beutel
6/13/2014	Update or Other Action	On April 23, 2014, the Alaska Department of Environmental Conservation and the United States Air Force reached agreement on the State-Eielson Air Force Base Petroleum Site Restoration Agreement (Two-party Agreement). This agreement was established to perform any necessary assessment, monitoring, remediation and cleanup determinations for petroleum contaminated sites at Eielson Air Force Base. This site was identified as a petroleum contaminated site requiring a response action and its cleanup will continue under Alaska regulations, following the procedures established in the agreement.	Monte Garroutte
8/7/2015	Document, Report, or Work plan Review - other	DEC provided comments to the USAF on the draft "2014 Site Characterization Report, Various Sites, Eielson Air Force Base, Alaska dated June 2015 (the 2014 CRP SCR). The 2014 CRP SCR describes sampling activities completed at PL001(M), CS082, SS530, SS068, SS083, TU531, CS074, CG517, SS533, TU077, SS519, SS079, CS525 at Eielson Air Force Base in July, August and September of 2014. Sampling of soil and groundwater was conducted to evaluate data gaps from previous investigations; delineate the nature and extent of soil and groundwater contamination; determine the potential for co-mingling of plumes from separate sites; and to determine the need, or lack thereof, for further investigation at each site.	Melinda Brunner
8/24/2015	Site Characterization Workplan Approved	DEC approved the "Multiple Compliance Restoration Program Sites Phase II Remedial Investigation/Feasibility Study Work Plan, Eielson Air Force Base, Alaska" dated August 2015. The work plan describes soil and groundwater sampling that will occur at SS068; fieldwork is scheduled to begin in August 2015.	Melinda Brunner
10/28/2016	Update or Other Action	DEC acknowledged receipt of the Draft Multiple Compliance Restoration Program Sites Interim Activities Report, Eielson Air Force Base, Alaska (July, 2016). DEC did not provide comments on the Interim Report and is reserving review and comments for the completed characterization reports.	John O'Brien
11/14/2016	Document, Report, or Work plan Review - other	DEC reviewed and provided comments on the Draft 2014 Site Characterization Report for Various Sites, Appendix F - Data Quality Assessment, Eielson Air Force Base, Alaska (June, 2015).	John O'Brien
12/16/2016	Document, Report, or Work plan Review - other	DEC completed review of the 2014 "Site Characterization Report, Various Sites - Data Quality Assessment" and resolved all comments.	Monte Garroutte
3/7/2017	Site Characterization Report Approved	DEC approved the 2014 Site Characterization for Multiple Sites (PL001 [M], SS068, CS074, TU077, SS079, CS082, SS083, CG517, SS519, CS525, SS530, TU531, and SS533), Report 2 (January 2017). Report 2 concluded that further investigation is required to fully delineate the nature and extent of soil and groundwater contamination present at all 13 Compliance Restoration Program (CRP) sites described.	John O'Brien
11/16/2018	Site Characterization Report Approved	DEC reviewed and approved the Site Characterization Report for Source Areas SS068, SS083, CS525, TU077, SO501, CG527, SS079, SS519 Eielson Air Force Base, Alaska, Final, dated November 2018. The report describes results of site characterizations (SCs) at multiple contaminated sites managed under the Compliance Restoration Program (CRP) at Eielson Air Force Base (AFB), Alaska. In order to delineate the extent of contamination at the eight CRP sites included in this report, Environmental Compliance Consultants, Inc. (ECC) partnered with Jacobs Engineering Group Inc. (Jacobs) to collect surface and subsurface soil, groundwater, surface water, and sub and near-slab soil gas samples; conduct an analytical data quality review; and screen for human health risk. Analytical sampling conducted during the 2015 through 2017 field activities closed data gaps from previous investigations and demonstrated that further characterization is not needed at three of the CRP sites; the remaining six sites require further investigation.	Bri Clark
2/24/2021	Exposure Tracking Model Ranking	A new updated ranking with ETM has been completed for source area 73283 petroleum in soil and groundwater.	Cascade Galasso-Irish
12/8/2021	Document, Report, or Work plan Review - other	DEC reviewed the 2021 2 Party Semi Annual Report and attachments A & B. The document provides a current the list of Petroleum-Contaminated Sites (Attachment A) and a Schedule of Required Response Actions (Attachment B) for the State-Eielson AFB Petroleum Site Restoration Agreement. DEC Provided an email to the Air Force confirming review and acceptance of response actions. Sites CG527, CS525, SS083, SS519, and SS519 have scheduled for a Supplemental Site Characterization report to be delivered In December 2021.	Dennis Shepard
3/4/2022	Document, Report, or Work plan Review - other	DEC provided review comments for the Draft Supplemental Site Characterization Report for Sites SS068 SS083 SS519 CS525 CG527, Eielson Air Force Base, Alaska, (February 2022). The Supplemental Site Characterization Report summarized field activities, presented analytical results, discussed the nature and extent of fuels contamination at the sites investigated, and updated the conceptual site models. Proposed remedial strategies and recommendations for further limited investigations were included.	Dennis Shepard
5/16/2022	Site Characterization Workplan Approved	DEC provided approval for the Final Supplemental Site Characterization Report for Sites SS068 SS083 SS519 CS525 CG527, Eielson Air Force Base, Alaska, (April 2022).	Dennis Shepard
1/13/2023	Document, Report, or Work plan Review - other	DEC provided preliminary review comments for the Draft Decision Document for Sites SS068, SS083, SS519, CS525, and CG527, Eielson Air Force Base, Alaska, dated November 2022. This Decision Document (DD) documents selection of and describes remedial actions for Sites SS068, SS083, SS519, CS525, and CG527 at Eielson Air Force Base (AFB), Alaska. The U.S. Air Force (USAF) is managing the remediation of contamination at these sites, associated with petroleum and petroleum-related compounds, in accordance with the State-Eielson Agreement (USAF 2014), referred to as the two-party agreement. Any Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) constituents remaining after remediation of the petroleum-related contamination will be addressed by transferring sites back to the Eielson Air Force Base, Federal Facility Agreement Under CERCLA Section 120 (USAF 1990), referred to as the three-party agreement.	Dennis Shepard
1/19/2023	Long Term Monitoring Workplan or Report Review	DEC received and approved a Revised (Revision 1) Final Supplemental Site Characterization Report for Sites SS068 SS083 SS519 CS525 CG527, Eielson Air Force Base, Alaska, dated January 2023. Revision 1 incorporates corrected analytical reports that were provided by the laboratory in December 2022, after the approval of the Final Supplemental Site Characterization Report. The corrected analytical reports include three non-detect results for 1,4-dichlorobenzene in soil at site CS525 that were previously reported erroneously as detections. The changes do not affect the conclusions of the report.	Dennis Shepard
9/18/2023	Document, Report, or Work plan Review - other	DEC reviewed and provided comments on the "Eielson AFB Two-Party Sites, Periodic Review - Draft, August 2023". The document reviewed and recorded the current status of two party sites (managed by USAF and DEC) at Eielson Air Force Base.	Axl LeVan
12/21/2023	Document, Report, or Work plan Review - other	DEC reviewed and approved "Draft-Final Periodic Review Report for Two-Party Sites at Eielson Air Force Base, Alaska, November 2023". This report documents the evaluation of the Interim Land Use Controls (Interim LUCs) for 23 two-party sites at EAFB.	Axl LeVan

Action Date

Action

Description

DEC Staff

2/18/2003

Update or Other Action

In February of 2003, Ann Farris provided additional comments on the 2000 site characterization and the Sept 2002 Proposed plan for this site. ADEC recommended further characterization of the two potential separate source areas and a determination of the amount and mobility of the product. DEC stated that the cleanup levels are listed in 18 AAC 75.345 and 18 AAC 75.340. DEC did not approve the proposed plan of long term monitoring and requested the site characterization be completed.

Emily Youcha

2/27/2003

Site Added to Database

DRO contamination on Eielson AFB.

Deborah Williams

10/11/2004

GIS Position Updated

Coordinates acquired by hand-held GPS during a site visit by Emily Youcha.

Torsten Ernst

12/20/2004

Meeting or Teleconference Held

Staff attended a meeting with the Air Force on December 15. ADEC recommended that AOC29 be addressed as soon as possible. ADEC reviewed the file for AOC29. A site characterization was conducted by AMEC (Draft Site Characterization for AOC29, December 2000). The ground-water investigation included installing temporary wells to examine the gradient and contaminant concentrations. DRO levels were detected above ADEC groundwater standards in wells MP-5 (11.5 mg/l), MP-7 (28.4 mg/l), and MP-11 (210 mg/l). The report states that MP-4 contained free product during each data collection event. The report also stated that the contamination in well MP-11 probably represents a second plume. ADEC requested that the Air Force re-evaluate this site.

Emily Youcha

6/24/2005

Update or Other Action

Staff recieved the 2005 workplan for sitewide monitoring. Site SS68/AOC29 was included in this report for monitoring at 2 locations. ADEC did not concur with the workplan and would like to see more characterization at this site. ADEC requested the Air Force install a well at the location of MP-4 and delineate the downgradient part of the plume near MW-11.

Emily Youcha

7/27/2005

Meeting or Teleconference Held

Staff participated in a meeting with Eielson AFB. Eielson will install two additional wells to determine whether there are 2 plumes at this site.

Emily Youcha

12/20/2005

Update or Other Action

Staff reviewed the 2000 site characterization report for this site. The consultant found that there were two areas DRO ground-water contamination at the site and one of the plumes has free product.

Emily Youcha

5/23/2006

Update or Other Action

Contaminated Sites staff commented on the final sitewide monitoring report for Eielson Air Force Base. Eielson collected ground-water samples from two locations at this site to verify the presence of contamination. DRO was detected at very high concentrations and NAPL is thought to be present. Staff determined that the characterization of a new Installation Restoration Program petroleum-contaminated site (SS68/AOC29) was inadequate and the Air Force conclusions of No Further Action were not justified. Staff requested a meeting with the Environmental Protection Agency and Air Force to discuss the Federal Facility Agreement for Eielson.

Emily Youcha

5/9/2008

Exposure Tracking Model Ranking

Initial ranking with ETM completed.

Janice Wiegers

1/18/2011

Update or Other Action

This entry contains only site-specific information. An informational site has been added to the database for actions that pertain to Eielson Air Force Base in its entirety. Please see ADEC file number 107.38.006/Hazard ID 25578/Eielson AFB Basewide Information.

Kathleen Beutel

6/13/2014

Update or Other Action

On April 23, 2014, the Alaska Department of Environmental Conservation and the United States Air Force reached agreement on the State-Eielson Air Force Base Petroleum Site Restoration Agreement (Two-party Agreement). This agreement was established to perform any necessary assessment, monitoring, remediation and cleanup determinations for petroleum contaminated sites at Eielson Air Force Base. This site was identified as a petroleum contaminated site requiring a response action and its cleanup will continue under Alaska regulations, following the procedures established in the agreement.

Monte Garroutte

8/7/2015

Document, Report, or Work plan Review - other

DEC provided comments to the USAF on the draft "2014 Site Characterization Report, Various Sites, Eielson Air Force Base, Alaska dated June 2015 (the 2014 CRP SCR). The 2014 CRP SCR describes sampling activities completed at PL001(M), CS082, SS530, SS068, SS083, TU531, CS074, CG517, SS533, TU077, SS519, SS079, CS525 at Eielson Air Force Base in July, August and September of 2014. Sampling of soil and groundwater was conducted to evaluate data gaps from previous investigations; delineate the nature and extent of soil and groundwater contamination; determine the potential for co-mingling of plumes from separate sites; and to determine the need, or lack thereof, for further investigation at each site.

Melinda Brunner

8/24/2015

Site Characterization Workplan Approved

DEC approved the "Multiple Compliance Restoration Program Sites Phase II Remedial Investigation/Feasibility Study Work Plan, Eielson Air Force Base, Alaska" dated August 2015. The work plan describes soil and groundwater sampling that will occur at SS068; fieldwork is scheduled to begin in August 2015.

Melinda Brunner

10/28/2016

Update or Other Action

DEC acknowledged receipt of the Draft Multiple Compliance Restoration Program Sites Interim Activities Report, Eielson Air Force Base, Alaska (July, 2016). DEC did not provide comments on the Interim Report and is reserving review and comments for the completed characterization reports.

John O'Brien

11/14/2016

Document, Report, or Work plan Review - other

DEC reviewed and provided comments on the Draft 2014 Site Characterization Report for Various Sites, Appendix F - Data Quality Assessment, Eielson Air Force Base, Alaska (June, 2015).

John O'Brien

12/16/2016

Document, Report, or Work plan Review - other

DEC completed review of the 2014 "Site Characterization Report, Various Sites - Data Quality Assessment" and resolved all comments.

Monte Garroutte

3/7/2017

Site Characterization Report Approved

DEC approved the 2014 Site Characterization for Multiple Sites (PL001 [M], SS068, CS074, TU077, SS079, CS082, SS083, CG517, SS519, CS525, SS530, TU531, and SS533), Report 2 (January 2017). Report 2 concluded that further investigation is required to fully delineate the nature and extent of soil and groundwater contamination present at all 13 Compliance Restoration Program (CRP) sites described.

John O'Brien

11/16/2018

Site Characterization Report Approved

DEC reviewed and approved the Site Characterization Report for Source Areas SS068, SS083, CS525, TU077, SO501, CG527, SS079, SS519 Eielson Air Force Base, Alaska, Final, dated November 2018. The report describes results of site characterizations (SCs) at multiple contaminated sites managed under the Compliance Restoration Program (CRP) at Eielson Air Force Base (AFB), Alaska. In order to delineate the extent of contamination at the eight CRP sites included in this report, Environmental Compliance Consultants, Inc. (ECC) partnered with Jacobs Engineering Group Inc. (Jacobs) to collect surface and subsurface soil, groundwater, surface water, and sub and near-slab soil gas samples; conduct an analytical data quality review; and screen for human health risk. Analytical sampling conducted during the 2015 through 2017 field activities closed data gaps from previous investigations and demonstrated that further characterization is not needed at three of the CRP sites; the remaining six sites require further investigation.

Bri Clark

2/24/2021

Exposure Tracking Model Ranking

A new updated ranking with ETM has been completed for source area 73283 petroleum in soil and groundwater.

Cascade Galasso-Irish

12/8/2021

Document, Report, or Work plan Review - other

DEC reviewed the 2021 2 Party Semi Annual Report and attachments A & B. The document provides a current the list of Petroleum-Contaminated Sites (Attachment A) and a Schedule of Required Response Actions (Attachment B) for the State-Eielson AFB Petroleum Site Restoration Agreement. DEC Provided an email to the Air Force confirming review and acceptance of response actions. Sites CG527, CS525, SS083, SS519, and SS519 have scheduled for a Supplemental Site Characterization report to be delivered In December 2021.

Dennis Shepard

3/4/2022

Document, Report, or Work plan Review - other

DEC provided review comments for the Draft Supplemental Site Characterization Report for Sites SS068 SS083 SS519 CS525 CG527, Eielson Air Force Base, Alaska, (February 2022). The Supplemental Site Characterization Report summarized field activities, presented analytical results, discussed the nature and extent of fuels contamination at the sites investigated, and updated the conceptual site models. Proposed remedial strategies and recommendations for further limited investigations were included.

Dennis Shepard

5/16/2022

Site Characterization Workplan Approved

DEC provided approval for the Final Supplemental Site Characterization Report for Sites SS068 SS083 SS519 CS525 CG527, Eielson Air Force Base, Alaska, (April 2022).

Dennis Shepard

1/13/2023

Document, Report, or Work plan Review - other

DEC provided preliminary review comments for the Draft Decision Document for Sites SS068, SS083, SS519, CS525, and CG527, Eielson Air Force Base, Alaska, dated November 2022. This Decision Document (DD) documents selection of and describes remedial actions for Sites SS068, SS083, SS519, CS525, and CG527 at Eielson Air Force Base (AFB), Alaska. The U.S. Air Force (USAF) is managing the remediation of contamination at these sites, associated with petroleum and petroleum-related compounds, in accordance with the State-Eielson Agreement (USAF 2014), referred to as the two-party agreement. Any Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) constituents remaining after remediation of the petroleum-related contamination will be addressed by transferring sites back to the Eielson Air Force Base, Federal Facility Agreement Under CERCLA Section 120 (USAF 1990), referred to as the three-party agreement.

Dennis Shepard

1/19/2023

Long Term Monitoring Workplan or Report Review

DEC received and approved a Revised (Revision 1) Final Supplemental Site Characterization Report for Sites SS068 SS083 SS519 CS525 CG527, Eielson Air Force Base, Alaska, dated January 2023. Revision 1 incorporates corrected analytical reports that were provided by the laboratory in December 2022, after the approval of the Final Supplemental Site Characterization Report. The corrected analytical reports include three non-detect results for 1,4-dichlorobenzene in soil at site CS525 that were previously reported erroneously as detections. The changes do not affect the conclusions of the report.

Dennis Shepard

9/18/2023

Document, Report, or Work plan Review - other

DEC reviewed and provided comments on the "Eielson AFB Two-Party Sites, Periodic Review - Draft, August 2023". The document reviewed and recorded the current status of two party sites (managed by USAF and DEC) at Eielson Air Force Base.

Axl LeVan

12/21/2023

Document, Report, or Work plan Review - other

DEC reviewed and approved "Draft-Final Periodic Review Report for Two-Party Sites at Eielson Air Force Base, Alaska, November 2023". This report documents the evaluation of the Interim Land Use Controls (Interim LUCs) for 23 two-party sites at EAFB.

Axl LeVan

Contaminant Information

Name

Level Description

Media

Comments

Control Type

Type

Details

Requirements

Description

Details

There are no documents for this site report.

No associated sites were found.

Missing Location Data

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Site Report: Eielson AFB (SS068) (AOC 29) AAA Site

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

Missing Location Data

State of Alaska Department of Environmental Conservation