| 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 expansion project to be combined with 4500 cubic yards of waste asphalt material removed from the Asphalt Lake sites SS63/SS39. This will 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 |
| 8/11/1992 |
Update or Other Action |
(Old R:Base Action Code = DD - Decision Document (CERCLIS)). Made a determination that Lagoons of STP are not in agreement. |
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 |
| 8/16/1994 |
Site Ranked Using the AHRM |
Initial ranking. |
Former Staff |
| 9/24/1996 |
Record of Decision |
Final Site-Wide Record of Decision, September 1, 1996; two documents received. |
Rielle Markey |
| 12/26/2001 |
GIS Position Updated |
Worked with Heather Goldman obtaining GIS latitude and longitude from 1:63,300 topographic map. |
Heather Goldman |
| 9/19/2003 |
Meeting or Teleconference Held |
Staff attended a meeting with Air Force and EPA personnel to resolve comments on the draft Eielson Five-Year Review. Issues with the document included event-driven groundwater sampling at several contaminated sites, which we denied pending further clarification of the process, and closing numerous sites under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), but keeping them open under the State until 18 AAC 75 diesel range organic cleanup levels are met. |
Ann Farris |
| 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 |
| 3/1/2006 |
Update or Other Action |
Staff had a telephone call with Eielson AFB to discuss their long-term monitoring program optimization. Eielson would like to apply "event-driven monitoring" to many benzene-contaminated sites, where monitoring would occur when the concentration reached the MCL at a predicted time. They are using MAKSENS to do the statistical regressions and come up with a slope indicating benzene degradation rates. This slope would predict when the concentrations would reach the MCL and monitoring would occur at that time only. They would like to apply this slope to other "similar sites" to predict when the concentrations would reach the MCL. Eielson submitted the concept to AFCEE for review, but apparently AFCEE requested more data, which Eielson did not have. At this point, DEC has not reviewed any data on this concept and requested Eielson submit a report showing the data and justification of their assumptions. |
Emily Youcha |
| 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 |
| 6/23/2008 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed. |
Deborah Williams |
| 11/24/2008 |
CERCLA ROD Periodic Review |
ADEC issued a letter of concurrence on the 2008 Five-Year ROD review for Eielson AFB. In the letter ADEC concurred with the current remedies but recommends further work on the following: the vapor intrusion pathway needs to be evaluated for all potential receptors at WP45/SS57 site along with further evaluation of the selected remedy to ensure the Remedial Action Objectives are going to be met. The buried drums remaining at SS35 may still contain product that may pose a potential risk to ecological and human health risk in the future. The area of buried drums identified outside of SS37 may pose a threat of an imminent release of hazardous substances and warrants further investigation or response action. As stated in the 2008 Five-Year ROD Review, the overall long-term protectiveness determination for the Sitewide OU/Garrison Slough remedy will be further investigated. A Land Use Control Management Plan should be developed and implemented. |
Deborah Williams |
| 11/3/2014 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 71349 Wastewater Plant Spill Ponds. Restrictions are currently in place to prevent contaminant exposures. Approval is required for any activity on site that can result in access or movement of groundwater or soil. |
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 WP32. |
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 WP32. 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 |
| 9/21/2016 |
Update or Other Action |
DEC approved a field change form for step out samples for the WP032 investigation, part of the OU345 management plan. |
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 |
| 2/23/2018 |
Spill Transferred from Prevention Preparedness and Response Program |
Spill transferred by PPRP staff Jennifer Hall. Spill no. 17309932403; spill date = 11/20/17; substance = water + 3/% aqueous film forming foam (AFFF) concentrate; quantity = ~100 gallons; description: The bay door at building 1337 was left open and the pipes froze. After thawing two pipes cracked and released liquid, the first was a water main and the second was backflow from the fire suppression system, which consists of majority water and about 3% AFFF concentrate (the older version of AFFF). Approximately 90 gallons of the mixture went into the drain which leads to the wastewater treatment plant.
|
Mitzi Read |
| 12/19/2018 |
Document, Report, or Work plan Review - other |
DEC reviewed and issued a secondary round of comments on the, "Draft Final Supplemental Remedial Investigation/Risk Assessment Report for OU3,4,5 Source Areas, Eielson Performance-Based Remediation, Eielson Air Force Base, Alaska," dated October 2018. |
Bri Clark |
| 10/17/2019 |
Document, Report, or Work plan Review - other |
DEC provided a response to the air force responses to DEC comments for the Supplemental Remedial Investigation/Risk Assessment Report for OU3,4,5 Source Areas, Eielson Performance-Based Remediation, Eielson Air Force Base, Alaska. A comment resolution meeting was recommended. |
Dennis Shepard |
| 8/11/2020 |
Document, Report, or Work plan Review - other |
DEC received a response to comments and a Final Revision 1 Supplemental Remedial Investigation/Risk Assessment Report for OU- 3,4,5 Source Areas, Eielson Performance Based Remediation, Eielson Air Force Base, Alaska, dated August 2020. This report summarizes remedial investigation (RI)/risk assessment (RA) activities conducted from 2015 through 2018 at Source Areas LF001, LF002, LF003/FT009, LF004, LF006, WP032, WP033, SS036, SS037, DP044, WP045/SS057, DP055, ST056, SS061, and SS064 on Eielson Air Force Base. |
Dennis Shepard |
| 6/2/2021 |
CERCLA RI Report Approved |
The U.S. Environmental Protection Agency (EPA) and Alaska Department of Environmental Conservation (DEC) provided joint approval of the Final Supplemental Remedial Investigation/Risk Assessment Report for OU3,4,5 Source Areas, Eielson Air Force Base (May 2021). The report summarizes remedial investigation (RI)/risk assessment (RA) activities conducted from 2015 through 2018 at Source Areas LF001, LF002, LF003/FT009, LF004, LF006, WP032, WP033, SS036, SS037, DP044, WP045/SS057, DP055, ST056, SS061, and SS064 on Eielson Air Force Base. |
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 |
| 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 |
