| Action Date |
Action |
Description |
DEC Staff |
| 8/13/2010 |
Underground Storage Tank Site Characterization or Assessment |
Staff reviewed and commented on a change in service site assessment for UST #183 at building 1300. Prior to 2009, the 20,000-gallon diesel UST #183 was a regulated tank because it was used as both a heating oil tank and as a back-up tank for a generator. A new tank was connected to the generator in 2009. Tank#183 is now used exclusively for heating oil and is no longer a regulated UST as defined by Alaska Statute 46.03.450(8). Staff commented that although the sample results were non-detect, detection limits were above cleanup levels for some analytes. Also, the number of samples was inadequate, and additional samples will be required to determine if a release has occured. |
Kim DeRuyter |
| 1/4/2011 |
Site Added to Database |
A new site has been added to the database |
Mitzi Read |
| 1/5/2011 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST site created in CSP database for source area 25,000-Gallon Dual-Purpose Diesel UST 183, 79006 |
Mitzi Read |
| 1/11/2011 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 79006 name: 25,000-Gallon Dual-Purpose Diesel UST 183 |
Mitzi Read |
| 8/16/2011 |
Underground Storage Tank Site Characterization or Assessment |
Staff provided comment on a Draft workplan to complete the change in service site assessment at for UST 183 at building 1300. Staff requested that GRO and PAHs be added to the sampling plan, and that samples be collected under the piping if possible. |
Kim DeRuyter |
| 9/16/2011 |
Site Characterization Workplan Approved |
Contaminated Sites staff approved a work plan for additional site assessment related to the 2009 change-in-service of UST #183. A 2010 letter from DEC identifies deficiencies in the 2009 site assessment report. A draft work plan was submitted on June 13, comments were sent August 16, a revised work plan was received Sept 09 and an approval letter was sent Sept 16. The additional site assessment will include another sample from a trench dug near the base of the tank and a sample from beneath the piping. The work may be conducted in 2011 or may be postponed until 2012. |
Kathleen Beutel |
| 12/22/2011 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
Adminstrative action addition for grant reporting purposes.
|
Evonne Reese |
| 4/10/2014 |
Document, Report, or Work plan Review - other |
2014- Draft Multiple Compliance Restoration Program Sites RI Work Plan received March 1, 2014. In 2012, SER activates were preformed to evaluate if petroleum-contaminated soil /groundwater remain for past fuel storage/transfer associated with UST 183. 12 soil samples (5 surface, 7 subsurface) and 3 groundwater samples were collected and analyzed for DRO, RRO, GRO, VOC, SVOCs, and metals. GRO, DRO, BTEX, methylene chloride, and arsenic all exceed cleanup levels in soil. DRO, GRO, and benzene exceeded current cleanup levels in groundwater samples. Additional field work is expected in the 2014 field season. |
Anna Iverson |
| 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 TU077; 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 |
| 9/12/2018 |
Update or Other Action |
DEC reviewed and issued comments on the "Draft Decision Document for Installation Restoration Program Source Areas SO066, TU077, SS079, SO501, SS503, and CG505," dated June 2018. |
Bri Clark |
| 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 |
| 4/12/2019 |
Update or Other Action |
DEC reviewed and issued comments on the "Draft Final Decision Document for Installation Restoration Program Source Areas SO066, TU077, SS079, SO501, SO503, and CG505," dated February 2019. |
Bri Clark |
| 6/11/2019 |
Update or Other Action |
DEC received and accepted the "Decision Document for Installation Restoration Program Source Areas SO066, TU077, SS079, SO501, SO503, and CG503." The decision document presents remedies to address the contamination at each of the 6 sites. |
Sara Marshall |
| 6/24/2020 |
Update or Other Action |
DEC signed the Decision Document for Installation Restoration Program Source Areas SO066, TU077, SS079, SO501, SO503, and CG505, Eielson AFB. The document identifies selected remedies for petroleum contaminated sites at Eielson Air Force Base, Alaska. The final selected remedy, excavation of affected soil and MNA of groundwater, is proposed to address contamination in soil and groundwater at Source Area TU077. Note that adjacent contaminated soil, groundwater, and soil gas will be managed under ST049. |
Dennis Shepard |
| 3/8/2021 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 79006 25,000-Gallon Dual-Purpose Diesel UST 183. |
Cascade Galasso-Irish |
| 3/14/2022 |
Document, Report, or Work plan Review - other |
DEC provided review comments for the Draft Uniform Federal Policy – Quality Assurance Project Plan (UFP-QAPP), Environmental Construction and Services, Remedial Action – Construction at Multiple sites: TU077, SS079, CG517 and ZZ088, Eielson Air Force Base, Alaska (February 2022). The UFP-QAPP details the remedial excavation services to be performed at Eielson Air Force Base (AFB) sites TU077, SS079, CG517, and ZZ088. Remedial excavation is proposed at sites TU077, SS079, and CG517 to remove up to 6,500 cubic yards (cy) of POL-contaminated soil in the vadose zone in order to eliminate the potential exposure concerns to human health and the environment. Remedial excavation is proposed at site ZZ088 to remove up to 350 cy of lead contaminated soil, as well as encapsulate the former communications building frame with a concrete cap. |
Dennis Shepard |
| 5/16/2022 |
Document, Report, or Work plan Review - other |
DEC provided backcheck review comments for the Draft Final Uniform Federal Policy – Quality Assurance Project Plan, Environmental Construction and Services, Remedial Action – Construction at Multiple sites: TU077, SS079, CG517 and ZZ088, Eielson Air Force Base, Alaska (April 2022). Some remaining clarification is needed for the Air Force responses. |
Dennis Shepard |
| 6/3/2022 |
Document, Report, or Work plan Review - other |
DEC provided approval for the Final Uniform Federal Policy – Quality Assurance Project Plan, Environmental Construction and Services, Remedial Action – Construction at Multiple sites: TU077, SS079, CG517 and ZZ088, Eielson Air Force Base, Alaska (May 2022).Remedial excavation is proposed at sites TU077, SS079, and CG517 to remove up to 6,500 cubic yards (cy) of POL-contaminated soil in the vadose zone in order to eliminate the potential exposure concerns to human health and the environment. Remedial excavation is proposed at site ZZ088 to remove up to 350 cy of lead contaminated soil, as well as encapsulate the former communications building frame with a concrete cap. |
Dennis Shepard |
| 5/10/2023 |
Offsite Soil or Groundwater Disposal Approved |
DEC reviewed and signed a Contaminated Soil Transport and Treatment Approval Form for disposal of 195 cubic yards of PFAS contaminated soil from the TU077 and CG517 removal actions to a RCRA facility. |
Axl LeVan |
| 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 |
| 4/16/2024 |
Document, Report, or Work plan Review - other |
DEC reviewed the "Draft 2024 Remedial Action Report for Remedial Action – Construction at Multiple Sites: CG517, SS079, TU077 and ZZ088, Eielson Air Force Base, Alaska, March 2024". The report outlines the excavation and removals performed at the four sites and the installation of monitoring wells. |
Axl LeVan |
| 6/5/2024 |
Document, Report, or Work plan Review - other |
DEC approved an updated to Land Use Control (LUC) boundaries for multiple Eielson Sites. Site SO066 and CG505 are NFA sites, where interim LUCs will remain in place until the sites are closed. The LUC Boundary for sites SS079 and SO503 were recommended to be collapsed. It was noted during discussion that the installation of monitoring wells was not included in the Decision Document for site SO503. Air Force has agreed to further review this and propose any changes that may be required for the remedy component of SO503. The LUC Boundary for site SO501 was recommended to be collapsed and shifted to include a previous excavation at the site. Site TU077 requires further investigation and will be presented again at a later date. The proposed LUC boundary for site ZZ088 will be compared to Alaska Department of Natural Resources (DNR) records and presented again at a later date. |
Axl LeVan |
| 6/21/2024 |
Document, Report, or Work plan Review - other |
DEC reviewed and provided comments on the "Periodic Review Report for Two-Party Sites, Eielson Air Force Base, Alaska, April 2024." DEC had previously approved the document, but is reviewing an updated version after substantial changes to the document. This report documents the evaluation of the Interim Land Use Controls (Interim LUCs) and remedy implementation for 17 sites at EAFB. |
Axl LeVan |
| 7/9/2024 |
CERCLA ROD Periodic Review |
DEC reviewed and approved the "Final Periodic Review Report for Two-Party Sites, Eielson Air Force Base, Alaska, July 2024". This report documents the evaluation of the Interim Land Use Controls (Interim LUCs) for 17 sites at EAFB. DEC approved a previous version of periodic review before substantial changes based on USAF legal review. Based on this DEC provided a new comment matrix addressing the updated version. |
Axl LeVan |
| 7/11/2024 |
CERCLA Removal Action Report |
DEC reviewed and approved the "Final 2024 Remedial Action Report for Remedial Action – Construction at Multiple Sites: CG517, SS079, TU077 and ZZ088, Eielson Air Force Base, Alaska, May 2024" based on response to DEC comments on the draft document. The report outlines the excavation of contaminated material at the four sites and the installation of groundwater monitoring wells for continued monitoring at the three of the sites. |
Axl LeVan |
