| Action Date |
Action |
Description |
DEC Staff |
| 1/21/1992 |
Site Added to Database |
This site is included in the state EPA Eielson FFA 100.38.011. |
Former Staff |
| 8/4/1992 |
Interim Removal Action Approved |
In August 1992, DEC approved the use of 200 cubic yards of DRO-contaminated soil from the sewage treatment plant (WP32 STP) expansion project to be combined with 4500 cubic yards of waste asphalt material removed from the Asphalt Lake sites SS63/SS39. This was to be used as road surface asphalt on Mullins Pit Road, an existing gravel road south east of the main runway at Eielson. The section of road to be treated is approximately 2.1 miles in length. The purpose of the project was to eliminate dust. The file number for this project is 107.38.071. |
Emily Youcha |
| 9/16/1992 |
Site Ranked Using the AHRM |
Initial ranking. |
Former Staff |
| 12/3/1992 |
Update or Other Action |
Received documents from EAFB on OU 3, 4 and 5. These documents are the quality-assured field sampling data. Markey is now reviewing them. Item # 35 and 36, from the CS/DOD bookcase. |
Rielle Markey |
| 2/23/1993 |
Update or Other Action |
(Old R:Base Action Code = RPL2 - Site Information Request Letter). Sent PRP-CS database Notification Letter to RP requesting update and more environmental information concerning contaminated site. Department of the Air Force responded with update of requested site information on 3-17-93. |
Jeff Peterson |
| 7/15/1993 |
Update or Other Action |
(Old R:Base Action Code = DD - Decision Document (CERCLIS)). Comments on Draft RI document. RI reported removal action that occurred at Asphalt Lake. Contaminants of concern remaining at site include high levels of TPH and PAHs. K subsurface. There are no contaminants in GW. Known contaminant was asphalt cement. |
Rielle Markey |
| 8/12/1993 |
Meeting or Teleconference Held |
Meeting in Seattle with EAFB and EPA. RI documented a removal action of a known contaminant, asphalt. Although some high levels of asphalt remain subsurface, there is not groundwater contamination. This site will require no further action. |
Rielle Markey |
| 9/30/1995 |
Update or Other Action |
(Old R:Base Action Code = NFA - No Further Action Required (CERCLA)). These 10 Eielson AFB OU 3, 4 and 5 source areas (ST27, WP33, SS36, SS37, SS39, SS63, SS64, LF02, and LF06) will receive no further remedial action under CERCLA because they present little risk to human health and the environment. This determination was based on a remedial investigation/baseline risk assessment and a site-wide draft ecological risk assessment. Although no further action is required, the groundwater at these source areas will continue to be monitored as part of the Site-Wide Program to confirm the results of the Remedial Investigation. |
Clint Adler |
| 9/30/1995 |
Update or Other Action |
Eielson AFB Operable Units 3, 4 and 5 ROD includes 20 source areas that have been combined because of commonalities in contamination. These source areas are DP44, WP45, SS57, SS56, SS61, DP25, ST27, WP33, SS35, SS36, SS37, SS39, SS63, ST58, SS64, LF02, LF03, FT09, LF04, and LF06. |
Clint Adler |
| 1/16/1996 |
Site Closure Approved |
NFA under CERCLA. |
Clint Adler |
| 2/16/1996 |
Update or Other Action |
(Old R:Base Action Code = RA - Remedial Action). Received Remedial Action Workplan. |
Clint Adler |
| 8/1/1996 |
Update or Other Action |
Received 2 copies on 8/23/1996 of the unsigned final, Record of Decision for OU-4, Fort Wainwright, Fairbanks, Alaska, from the U.S. Army. |
Rielle Markey |
| 9/24/1996 |
Record of Decision |
Final Site-Wide Record of Decision, September 1, 1996; two documents received. |
Rielle Markey |
| 3/24/1997 |
Update or Other Action |
Site updated by Shannon and Wilson, based on the Air Force Relative Risk Evaluation Worksheet dated 12/4/95. |
S&W |
| 8/26/2004 |
GIS Position Updated |
Position acquired using "Base MW Map 2004" CAD drawing from EIAFB georeferenced to QuickBird Satellite imagery, NAD27. |
Torsten Ernst |
| 10/11/2004 |
GIS Position Updated |
Coordinates acquired by Emily Youcha during a site visit using a hand-held GPS. Location was acquired in the road next to the site. |
Torsten Ernst |
| 7/6/2006 |
Update or Other Action |
ADEC agreed to decrease sampling of the North Boundary Wells from annual sampling to biennial. Upcoming measurements will be summer 2007, 2009, 2011, etc. Concentrations of VOCs, SVOCs, and metals in the sentinel wells have been monitored annually since 1992 and there has been no detection of contamination. |
Emily Youcha |
| 6/25/2012 |
Site Reopened |
Site reopened per Settlement Agreement. |
Bri Clark |
| 2/11/2014 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 71353 name: auto-generated pm edit Eielson AFB (OU-4) (SS39) |
Anna Iverson |
| 2/11/2014 |
Exposure Tracking Model Ranking |
updated to represent new data submitted in 2012 IWMP, inital ranking had not been done. |
Anna Iverson |
| 2/11/2014 |
Document, Report, or Work plan Review - other |
2012-Final installation-wide monitoring program (IWMP) report received June, 24 2013. During the 2012 season eight monitoring wells were installed. One of these wells replaced historic wells that had been decommissioned and seven were installed in new locations. The eight new wells were sampled, and there was no detected COCs (Contaminant of concern) or COPCs (Contaminant of potential concern) with levels that exceeded current MCL (Maximum contaminant level) or ADEC groundwater levels. Further discussion of plume behavior is not warranted at this time as no COCs and/or COPCs are known to have impacted groundwater quality at Source Areas SS39/63. |
Anna Iverson |
| 5/1/2014 |
Document, Report, or Work plan Review - other |
2013-Draft installation-wide monitoring program (IWMP) report received March, 26 2014. During the spring and fall 2013 monitoring events, all eight IWMP wells were sampled. There was no detected COCs (Contaminant of concern) or COPCs (Contaminant of potential concern) with levels that exceeded current MCL (Maximum contaminant level) or ADEC groundwater levels. Future sampling results will be used to confirm absence of ROD COCs exceeding FRGs in groundwater. |
Anna Iverson |
| 9/22/2015 |
CERCLA RI Plan Approved |
Joint approval issued by EPA and DEC for the final "Remedial Investigation / Feasibility Study Management Plan For Operable Units 3, 4, and 5 Source Areas, Eielson Performance-Based Remediation, Eielson Air Force Base, Alaska" dated September 2015 (OU 3, 4 & 5 RI/FS MP). The OU 3, 4 & 5 RI/FS MP describes planned remedial investigations at 23 contaminated sites at Eielson Air Force Base, including SS39. |
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 SS39. The FSP is meant to be used in conjunction with the appropriate remedial investigation/feasibility study (RI/FS) management plan(i.e. OU 3,4,& 5) and the Programmatic Quality Assurance Project Plan. |
Melinda Brunner |
| 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 |
| 7/18/2017 |
Document, Report, or Work plan Review - other |
DEC reviewed and provided comments on the Installation-Wide Monitoring Program, 2016 Groundwater Monitoring Report, Eielson Air Force Base, Alaska (June, 2017). |
John O'Brien |
| 8/6/2018 |
CERCLA ROD Periodic Review |
DEC evaluated "Fifth Five-Year Review Report for Eielson Air Force Base, Alaska" draft dated April 2018 and issued comments. |
Bri Clark |
| 8/9/2018 |
Document, Report, or Work plan Review - other |
DEC reviewed and provided a second round of comments on Explanation of Significant Differences (ESD) to the Records of Decisions for Eielson Air Force Base Operable Units, OU1, OU2, OU3,4,5, and OU6, dated November 2017. |
Bri Clark |
| 8/10/2018 |
Institutional Control Periodic Reporting |
DEC and EPA reviewed the "Installation-Wide Monitoring Program 2017 Groundwater Monitoring Program" for Eielson Air Force Base, Alaska dated March 2018 and issued comments. |
Bri Clark |
| 12/19/2018 |
Document, Report, or Work plan Review - other |
DEC reviewed and provided comments on the "Draft Installation-Wide Monitoring Program Quality Assurance Project Plan, Addendum No. 8, Eielson Performance-Based Remediation, Eielson Air Force Base, Alaska," dated November 2018. |
Bri Clark |
| 2/13/2019 |
Institutional Control Periodic Reporting |
DEC and EPA approved the Installation-Wide Monitoring Program 2017 Groundwater Monitoring Report, Eielson Air Force Base, Alaska, dated January 2019. |
Bri Clark |
| 3/4/2019 |
Institutional Control Periodic Reporting |
DEC issued comments on the Draft Installation-Wide Monitoring Program 2018 Groundwater Monitoring Report, Eielson Air Force Base, Alaska, dated January 2019. This report describes the groundwater monitoring activities conducted installation-wide in 2018. |
Bri Clark |
| 8/23/2019 |
Document, Report, or Work plan Review - other |
DEC reviewed and approved the "Final Site Characterization Report II, Source areas ST010/SS014, SS012, ST013/DP026, ST015, ST016, ST018, ST019, ST020, WP038, SS039/SS063, SS047, ST048, SS050, SS051, SS052, SS053, AND DP054, Eielson Performance Based Remediation, Eielson AFB, Alaska, June 2019". Long term management of these 20 source areas is in the process of being transferred from the Eielson Federal Facility Agreement (USAF 1990) to the State-Eielson AFB Petroleum Site Agreement (Alaska Department of Environmental Conservation [ADEC] 2014). Therefore site characterization results were presented for these sites outside of the CERCLA RIFS process. |
Axl LeVan |
| 9/20/2022 |
Document, Report, or Work plan Review - other |
The U.S. Environmental Protection Agency (EPA) and Alaska Department of Environmental Conservation (DEC) approved the Final 2021 Institutional Controls/Land Use Controls Annual Report, Eielson Air Force Base, Alaska (dated September 2022). The report provides inspection findings and reviews individual ICs established by the record of decision (ROD) documents for Installation Restoration Program source areas with enforceable ICs, as well as other contaminated sites currently with LUCs in effect. |
Dennis Shepard |
| 11/1/2022 |
Document, Report, or Work plan Review - other |
DEC provided review comments for the Draft Supplemental Remedial Investigation (RI) Work Plan (WP) Addendum, Eielson Air Force Base, Alaska, September 2022. The Supplemental RI Work Plan Addendum is prepared with the intention of providing a detailed approach to support the objectives of characterizing contamination in general accordance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) and applicable state laws at 29 source areas within Operable Unit (OU) 1, OU2, OU4, and OU6 at Eielson AFB. This supplemental work plan addendum complements the primary planning documents Final Supplemental Remedial Investigation Work Plan Eielson Air Force Base, Alaska (September 2022) (Gaps 1 Work Plan) and the Risk Assessment Work Plan (USAF 2016). |
Dennis Shepard |
