| Action Date |
Action |
Description |
DEC Staff |
| 10/17/2012 |
Site Added to Database |
A new site has been added to the database |
Mitzi Read |
| 11/1/2012 |
Document, Report, or Work plan Review - other |
2012 – Phase 1 Source Evaluation Report (SER) for SS085 received March 2012. The purpose of this preliminary evaluation was to determine the appropriate path forward for the source area. The sources of potential impacts at the site are suspected to be (1) fluids discharged into the dry well and (2) possible release of contaminants from the sediment accumulated at the bottom of the well into the groundwater. Phase II Source Evaluation Report (SER) will be completed as a site inspection. Additional environmental data will be collected. *Added to CSP: 8/7/2014* |
Anna Iverson |
| 4/1/2013 |
Document, Report, or Work plan Review - other |
2013- Final Quality Assurance Project Plan (QAPP) for Phase 2 SER at SS085 received April 2013. The QAPP outlines the policies, organization, and specific quality assurance (QA)/quality control (QC) measures associated with the collection, analysis, and reporting of data collected in support of the investigation to achieve the data quality goals. The purpose of the Phase 2 SER is to determine the presence or absence of COPCs in the areas and the media most likely to be impacted by any potential releases from past contaminants. * Added to CSP: 8/7/2014 |
Anna Iverson |
| 2/27/2015 |
Document, Report, or Work plan Review - other |
The AF submitted Final Phase 2 Source Evaluation Report (SER) for site SS085. Received 2/24/15. The purpose of Phase 2 SER was to determine the presence or absence of COPCs in the areas and the media most likely to be impacted by a past release from the dry well (SS085). DRO, barium and chromium were present in soil samples at concentrations in exceedance of ADEC soil screening levels. Metals were present in groundwater samples in exceedance of background threshold values. It is unclear the exact extent of groundwater contamination, further investigation is needed to better characterize groundwater quality. |
Anna Iverson |
| 3/23/2015 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area. This ranking is based only off information presented in Phase 1 SER. |
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 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 SS085. |
Melinda Brunner |
| 9/22/2016 |
Update or Other Action |
DEC signed a field change form for the investigation of site SS085. This field change form specified step-out samples for the site investigation. |
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 |
| 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 |
| 10/17/2019 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 79347 Bldg. 3386 UIC . |
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 |
| 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 |
