| Action Date |
Action |
Description |
DEC Staff |
| 10/3/2014 |
Site Added to Database |
A new site has been added to the database |
Mitzi Read |
| 10/3/2014 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST site created in CSP database for source area Three 10,000-Gal USTs #177 (gas), #179 (gas), & #180 (diesel), 79665 |
Mitzi Read |
| 11/19/2014 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 79665 name: Three 10,000-Gal USTs #177 (gas), #179 (gas), & #180 (diesel) |
Debra Caillouet |
| 6/12/2015 |
Enforcement Action |
DEC issued a Notice of Intent to Issue Mandatory Compliance Order to the Army (Notice of Intent) because USTS 177, 179, 180 had not been removed from the ground with a site assessment completed, as required by 18 AAC 78.085(c) and 18 AAAC 78.090. |
Melinda Brunner |
| 8/28/2015 |
Update or Other Action |
Transfer to Fairbanks |
Susan Carberry |
| 1/20/2016 |
Enforcement Action |
The State of Alaska and the U.S. Army, entered into a Compliance Order By Consent (COBC) on this date. The document describes the actions the U.S. Army must take to conduct and complete the underground storage tank (UST) permanent closure and corrective action activities in accordance with 18 AAC 78, and following provisions of the Compliance Order. |
Dennis Shepard |
| 5/2/2016 |
Update or Other Action |
DEC received a Notice of Intent to close AAFES Tanks #177, 179, and 180 - |
Dennis Shepard |
| 5/2/2016 |
Document, Report, or Work plan Review - other |
DEC received a draft WORK PLAN FOR USTS REMOVAL AND INITIAL ABATEMENT AAFES UNDERGROUND STORAGE TANKS REMOVAL, INITIAL ABATEMENT,RELEASE INVESTIGATION AND CORRECTIVE ACTION PLAN, BUILDING 3562
FORT WAINWRIGHT, ALASKA. |
Dennis Shepard |
| 5/23/2016 |
Document, Report, or Work plan Review - other |
DEC provided comments for the Draft Work Plan for USTs Removal and Initial Abatement, AAFES UST removal, Initial Abatement Release Investigation and Corrective Action Plan, Building 3562, Fort Wainwright. |
Dennis Shepard |
| 6/1/2016 |
Document, Report, or Work plan Review - other |
DEC received a Draft Work Plan for Building 3562 Release Investigation. |
Dennis Shepard |
| 6/28/2016 |
Document, Report, or Work plan Review - other |
DEC approved the Work Plan for USTs Removal and Initial Abatement, AAFES Underground Storage Tanks Removal, Initial Abatement Release Investigation and Corrective Action Plan, Building 3562, Fort Wainwright, Alaska, June 2016. |
Dennis Shepard |
| 6/30/2016 |
Site Visit |
A site visit was conducted to view the excavation of the USTs. |
Dennis Shepard |
| 7/1/2016 |
Site Visit |
A site visit was conducted to view the excavation of the USTs and soil removal work. The USTs were removed from the excavation and soil characterization and removal is ongoing. |
Dennis Shepard |
| 7/7/2016 |
Site Visit |
A site visit was conducted to view the excavation. The tanks have been removed and the contaminated soil surrounding the tanks has been excavated to groundwater. One area of contamination remains to be excavated near the middle dispenser area. |
Dennis Shepard |
| 7/7/2016 |
Update or Other Action |
A Notice of Post Closure (ADEC Form 18-0505) was received for the AFFES Tanks #177, 179 and 180. |
Dennis Shepard |
| 10/28/2016 |
Document, Report, or Work plan Review - other |
DEC received a Draft Release Investigation Report and a Draft UST Removal and Initial Abatement and corrective Action Plan Report for the AFFES PX Gas Station, Building 3562, Fort Wainwright, Alaska. |
Dennis Shepard |
| 12/13/2016 |
Meeting or Teleconference Held |
A two day Federal Facilities Agreement (FFA) and Stakeholders meeting was held on December 13 & 14, 2016. The main focus of the meeting was to develop a site discovery and site intake process that would satisfy requirements of the Fort Wainwright FFA, RCRA Permit, and two party agreements. The Army, EPA and DEC committed to a flowchart of the preliminary source evaluation process. Timelines were established for scoping a land use control implementation plan (LUCIP) and developing a contracting schedule for Fort Wainwright contaminated site investigations and remedial actions. Seven sites were proposed for inclusion into the FFA (three party agreement) by the Army and the RPMs documented the assignment of the regulatory path for these sites using a newly developed and agreed to signature form. |
Dennis Shepard |
| 12/22/2016 |
Underground Storage Tank Site Characterization or Assessment |
DEC received the Final Release Investigation Report for the AAFES Underground Storage Tanks Removal, Initial Abatement, Release Investigation and Corrective Action Plan Building 3562 Fort Wainwright, Alaska. The report was approved on November 14, 2016. |
Dennis Shepard |
| 12/31/2016 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
Administrative action addition for grant reporting purposes. |
Evonne Reese |
| 1/1/2017 |
Document, Report, or Work plan Review - other |
DEC approved the 2015 Annual Institutional Controls Report, Fort Wainwright, Alaska (August 2016). |
Dennis Shepard |
| 2/3/2017 |
Underground Storage Tank Site Characterization or Assessment |
DEC received the Final USTs Removal And Initial Abatement Report for the AAFES Underground Storage Tanks Removal, Initial Abatement, Release Investigation and Corrective Action Plan Building 3562 Fort Wainwright, Alaska. |
Dennis Shepard |
| 11/2/2017 |
Document, Report, or Work plan Review - other |
DEC approved the Indoor Air and Utilidor Air Assessment Work Plan, Former AAFES Underground Storage Tanks Corrective Action Implementation, Building 3562, Fort Wainwright, Alaska |
Dennis Shepard |
| 1/11/2018 |
Document, Report, or Work plan Review - other |
DEC approved the Technical Memorandum – Indoor Air and Utilidor Air Assessment Data Summary Report, Former AAFES Underground Storage Tanks Corrective Action Implementation, Building 3562, Fort Wainwright, Alaska, dated January 10, 2018. The document describes results from indoor air and utilidor sampling at the former Army and Air Force Exchange Service (AAFES) building (Building 3562). The indoor and utilidor air samples were compared to Indoor Air Target Levels (IATL), and all results were below the target levels. DEC had no comments on this technical memorandum document. |
Erica Blake |
| 1/31/2018 |
Site Characterization Workplan Approved |
DEC approved the 2018 Remedial Design Supplemental Site Characterization Work Plan, Former AAFES Underground Storage Tanks Corrective Action Implementation, Former AAFES Service Station, Building 3562, Fort Wainwright, Alaska, dated January 2018. The Work Plan described a proposed investigative approach for further site investigation at the Former Army & Air Force Exchange Services (AAFES) Building 3562 Post Exchange (PX) Gas Station. This site investigation included; defining the northern and western extents of soil contamination, providing additional groundwater sampling locations to supplement existing monitoring wells, installing soil gas probes on the north side of Building 3562 to help assess potential vapor migration, and providing a more complete baseline of soil, groundwater and soil gas data to aid in assessing remediation progress. Field work is scheduled for February 2018. |
Erica Blake |
| 8/16/2018 |
Document, Report, or Work plan Review - other |
DEC approved the final Remediation System Design, Installation, Operation, Maintenance, Monitoring, and Closure Work Plan. Former AAFES Underground Storage Tank Corrective Action Implementation, Former AAFES Service Station, Building 3562, Fort Wainwright, Alaska, dated August 2018. The document described activities to install an Air Sparge (AS)/ Soil-vapor extraction (SVE) system at the former Army and Air Force Exchange Service (AAFES) Station located at Fort Wainwright, Alaska. Site contaminants of concern (COCs) are fuel-related contaminants associated with fuel releases from the former underground storage tanks (USTs). Site COCs include, gasoline range organics (GRO), diesel range organics (DRO), polycyclic aromatic hydrocarbons (PAHs) and a short list of volatile organic compounds (VOCs). The objectives for installing this system are to reduce petroleum hydrocarbon contaminants to below risk-based target or cleanup levels within approximately 3-5 years of AS/SVE system operation. |
Erica Blake |
| 10/1/2018 |
Document, Report, or Work plan Review - other |
DEC approved the 2018 Remedial Design Supplemental Site Characterization Report, Former AAFES Underground Storage Tanks Corrective Action Implementation, Former AAFES Service Station, Building 3562, Fort Wainwright, Alaska, dated September 2018. The document describes results from soil, groundwater, soil gas and air sampling activities conducted during November 2017 and February 2018 at the former Army and Air Force Exchange Service (AAFES) Station at Building 3562 which is located on the south side of Neely Road on Fort Wainwright, Alaska. Results from this supplemental site characterization investigation helped to expand the underground storage tanks (UST) and the fuel island source area footprint which allowed for design of an effective remediation well layout to treat the source areas. This effective remediation design is an air sparge (AS)/soil vapor extraction (SVE) system. AS/SVE activities were described and approved under separate cover, "Remediation System Design, Installation, Operation, Maintenance, Monitoring, and Closure Work Plan," dated August 2018. |
Erica Blake |
| 11/1/2018 |
Site Visit |
DEC staff conducted a site visit to the Former Army and Air Force Exchange Services (AAFES) Underground Storage Tanks (USTs) site to view the Air Sparge (AS)/Soil vapor-extraction (SVE) system operating. At the time of the site visit, the system was not operating due to an error in the initial startup. Once the contractor gets the system operating, DEC will be invited back to view the system in operation. |
Erica Blake |
| 11/27/2018 |
Site Visit |
DEC staff conducted a site visit to the Former Army and Air Force Exchange Services (AAFES) Underground Storage Tanks (USTs) site to view the Air Sparge (AS)/Soil vapor-extraction (SVE) system in operation. System was in operation, although SVE flow gauges were temporarily removed because they were not sized properly for pipe diameter. Contractor assured DEC staff that correctly sized flow meters had been ordered and would be installed when received. |
Kevin Fraley |
| 5/28/2019 |
Document, Report, or Work plan Review - other |
DEC approved the Air Sparge / Soil Vapor Extraction System Start-Up and 2019 Quarter One Groundwater Monitoring Technical Memorandum, Former AAFES Underground Storage Tanks Corrective Action Implementation, Building 3562, Fort Wainwright, Alaska (dated May 17, 2019). The document described results from the air sparge (AS) / soil vapor extraction (SVE) system start-up and the quarter one groundwater sampling effort for the Former Army and Air Force Exchange Service (AAFES) Underground Storage Tanks (USTs) corrective action implementation. The first quarter groundwater sampling results showed a significant decrease in contaminant concentrations from the February 2018 supplemental site characterization sampling event (prior to AS/SVE system installation and operation). Even with the concentration decrease, the contaminants of concern at the site are still above the DEC cleanup levels in several monitoring wells. DEC will continue to receive quarterly technical memorandum updates, however, DEC will wait until the draft annual report is received (expected March 2020) to review and provide comments on the AS/SVE system results. |
Erica Blake |
| 6/21/2019 |
Update or Other Action |
DEC received the 2nd Quarter Groundwater Technical Memorandum document for the ongoing long-term monitoring at the Former Army and Air Force Exchange Services (AAFES) site. The Quarter 2 technical memorandum describes results from air sampling the pre-treatment and post-treatment effluent from ports located upstream and downstream of the electric catalytic oxidizer (ECO). The technical memorandum also describes groundwater monitoring activities conducted from April 30, 2019 through May 1, 2019. A draft annual report is expected March 2020 which will describe the efforts from the quarterly events, and provide detailed conclusions and recommendations. DEC did not provide any review comments for this document, because DEC expects to comment on the forthcoming annual report. |
Erica Blake |
| 2/24/2020 |
Offsite Soil or Groundwater Disposal Approved |
DEC approved the transport of one, 55-gallon drum of petroleum contaminated groundwater to be disposed of at NRC Alaska LLC. The purge water was generated November 5-7, 2019 and February 4-6, 2020 from groundwater sampling activities going on at the Building 3562 PX Gas Station. |
Kevin Fraley |
| 9/11/2020 |
Document, Report, or Work plan Review - other |
DEC approved the Final Remediation Systems Installation, Operation, Maintenance, and Monitoring Report, Former AAFES Underground Storage Tanks Corrective Action Implementation, Former AAFES Service Station, Building 3562 Fort Wainwright, Alaska (August 2020). This report describes the design, construction, installation and startup of the air sparge (AS)/ soil vapor extraction (SVE) remediation system at the Former Army and Air Force Exchange Service (AAFES) site located along Neely Road on Fort Wainwright, Alaska (FWA). The report describes activities conducted at the site for Year 1 of operations. Recommendations are to continue AS/SVE system operation until analytical results indicate that the site contaminants of concern (COCs) are below ADEC cleanup levels. Operations, maintenance, and monitoring (OM&M) site visits and quarterly groundwater sampling are expected to continue. |
Erica Blake |
| 4/27/2021 |
Offsite Soil or Groundwater Disposal Approved |
ADEC approved of approximately 110-gallons of petroleum contaminated purge water generated from the Former Army and Air Force Exchange Service (AAFES) site to be transported from Fort Wainwright, Alaska to the U.S. Ecology Viking Facility in Anchorage, Alaska. |
Erica Blake |
| 7/29/2021 |
Update or Other Action |
ADEC reviewed the "Draft Remediation System Operation, Maintenance, and Monitoring and Quarterly Groundwater Monitoring Report Operational Year Two" received on June 15, 2021. The report details the second year of operations, maintenance, and monitoring (OM&M) of the air sparging (AS)/soil vapor extraction (SVE) remediation system at the Former Army and Air Force Exchange Service (AAFES) site located along Neely road on FWA. The AS/SVE system also serves as an engineering control to address potential for vapor intrusion. The report includes the quarterly groundwater monitoring, risk management of the vapor intrusion pathway, analytical results and data quality review. Project activities for the second year of operations were conducted between February 2020 and February 2021.
The AS system was out of commission during the second half of year two, which resulted in a rebounding of contaminant of concern (COC) concentrations. The rebounding of COCs resulted in an increased time-to-cleanup modelling of 5.3 years. The estimated time to cleanup will be updated after the third year of AS/SVE system operation.
The AS blower replacement and system repairs occurred in May 2021 and the AS system has resumed operation for year three. In addition to the AS blower replacement, a new SVE exhaust stack and electric catalytic oxidizer (ECO) bypass was installed. Post-treatment ECO exhaust samples will no longer be collected as the use of the ECO unit has been discontinued.
|
Cascade Galasso-Irish |
| 8/25/2021 |
Offsite Soil or Groundwater Disposal Approved |
ADEC approved a contaminated media transport request for one, 55-gallon drum of investigative-derived waste (IDW) to be transported to U.S. Ecology in Moose Creek, Alaska for treatment and disposal. Potential contaminants of concern in the IDW is petroleum only. The purgewater was generated 5/3/2021, 8/3/2021 and 8/4/2021. |
Erica Blake |
| 9/13/2021 |
Document, Report, or Work plan Review - other |
ADEC Approved the Final Remediation System Operation, Maintenance, and Monitoring and Quarterly Groundwater Monitoring Report Operational Year Two. |
Cascade Galasso-Irish |
| 3/23/2022 |
Offsite Soil or Groundwater Disposal Approved |
ADEC provided approval for transporting approximately 100-gallons of purge water generated from the Former PX Gas Station (Building 3562) from Fort Wainwright, Alaska to the U.S. Ecology Viking Facility. Potential contaminants of concern in the purge water is petroleum constituents only. This purge water was generated on 2/7/2022 and 2/8/2022. |
Erica Blake |
| 4/26/2022 |
Document, Report, or Work plan Review - other |
ADEC provided review comments for the "Draft 2022 Work Plan Addendum – Remediation System Operation, Maintenance, Monitoring and Closure (dated March 2022) to the U.S. Army. The work plan addendum (WPA) will be used to guide the site activities and reporting tasks. The objectives of the annual operations and maintenance and quarterly groundwater monitoring tasks are to operate, maintain, and monitor the air sparge (AS)/ soil vapor extraction (SVE) system so that it can meet site remediation goals. |
Erica Blake |
| 4/29/2022 |
Document, Report, or Work plan Review - other |
ADEC provided approval for the "Final 2022 Work Plan Addendum – Remediation System Operation, Maintenance, Monitoring and Closure" (dated April 2022) to the U.S. Army. The work plan addendum (WPA) will be used to guide the site activities and reporting tasks for work conducted at the Former Army and Air Force Exchange Service (AAFES) Station on Fort Wainwright, Alaska (FWA). The approved WPA references laboratory certifications for laboratories where the certification will expire throughout the duration of this project. ADEC requested the Army provide a work plan deviation notice if a lab not discussed in the WPA is used. |
Erica Blake |
| 8/1/2022 |
Document, Report, or Work plan Review - other |
ADEC approved the final report documenting the third year of operations, maintenance, and monitoring (OM&M) of the air sparging (AS)/soil vapor extraction (SVE) remediation system at the Former Army and Air Force Exchange Service (AAFES) site located along Neely Road on FWA. The AS/SVE system also serves as an engineering control to address potential for vapor intrusion. The report includes the quarterly groundwater monitoring, risk management of the vapor intrusion pathway, analytical results and data quality review. Project activities for the third year of operations were conducted between February 2021 and February 2022.
The AS system was out of commission during the second half of year two and first quarter of year three, which resulted in a rebounding of contaminant of concern (COC) concentrations. The rebounding of COCs resulted in an increased time-to-cleanup modelling of 7.2 to 7.7 years, which is an increase from the initial time to cleanup of three- to five-year estimate proposed in the 2018 Remediation System Design, Installation, Operation, Maintenance, Monitoring, and Closure Work Plan, and the estimated 5.3 years following year two of the OM&M.
Additional AS/SVE system OM&M visits are recommended to continue quarterly, concurrent with ground water monitoring field efforts. The AS/SVE system should continue to operate until COC concentrations in analytical groundwater sample results are below ADEC cleanup levels and controlled rebound testing can be initiated. The estimated time to cleanup will be updated after the fourth year of AS/SVE system operation and quarterly groundwater monitoring. |
Cascade Galasso-Irish |
| 9/13/2022 |
Update or Other Action |
ADEC received the Year 4 2022 Quarter 1 Remediation System Operation, Maintenance, and Monitoring Report on the Former Army and Air Force Exchange Service (AAFES) Station. The report indicates the air sparge/soil vapor extraction (AS/SVE) system was inoperable from 25 May to the end of Quarter 1 (31 May) and has not been turned on as of 15 July 2022 |
Tim Sharp |
| 3/10/2023 |
Document, Report, or Work plan Review - other |
DEC received and reviewed the Draft Doyon Utilities Sampling and Analysis Plan (SAP) Addendum for P2046 Building 3563 Rehab Well, Pump and Motor. The SAP Addendum details removal and replacement of the existing generator and appurtenances at Building 3563. Soils excavated will be screened and sampled for gasoline and diesel range organics (GRO, DRO), volatile organic compounds (VOCs), and Resource Conservation and Recovery Act (RCRA) metals. Lead will also be analyzed with Toxicity Characteristic Leaching Procedure (TCLP) sampling methods. Soil sample results will be compared to the most stringent of either the human health or migration to groundwater cleanup levels found in 18 Alaska Administrative Code (AAC) 75.341(c) Tables B1 and B2. VOCs will also be compared to the Environmental Protection Agency (EPA) 2019 Resident Soil Regional Screening Levels (RSLs). |
Tim Sharp |
| 3/10/2023 |
Document, Report, or Work plan Review - other |
DEC approved the Revised Doyon Utilities Addendum to the Post-Wide Sampling and Analysis Plan for P2046 Building 3563 Rehab Well, Pump and Motor. |
Tim Sharp |
| 6/2/2023 |
Document, Report, or Work plan Review - other |
DEC reviewed the Draft Remediation System Operation, Maintenance, and Monitoring and Quarterly Groundwater Monitoring Report, Operational Year 4.The report presented the operational Year Four (March 1, 2022 – 28 February, 2023) air sparge/soil vapor extraction (AS/SVE) system operations, maintenance, and monitoring (OM&M) activities, as well as summarizing the SVE effluent and groundwater sampling results. The report recommends continued operation of the AS/SVE system with quarterly monitoring. DEC submitted comments for response on this date. |
Tim Sharp |
| 6/23/2023 |
Document, Report, or Work plan Review - other |
DEC has completed a backcheck of the response to comments for the P2413 Neely Road Phase 2 Sampling and Analysis Plan (SAP) Addendum. The SAP Addendum is to be used in conjunction with the 2020 Doyon Utilities (DU) Fort Wainwright, Alaska (FWA) Postwide SAP. The project will excavate the depth required to access the utilidor lids and vaults for maintenance and repair (up to five feet below ground surface) and is not expected to impact groundwater. This project will complete rehabilitation to approximately 4,000 linear feet (LF) of utilidor along Neely Road, between 9th Street and Meridian Road.
According to the figures, it appears the project will impact soil at four active contaminated sites:
• Fort Wainwright Fire Station #2 (File Number 108.38.163)
• Fort Wainwright Neely Road Fire Training Area (File Number 108.38.164
• Fort Wainwright Bldg 3562 PX Gas Station USTs 177,179,180 CC-FTWW-120 (File Number 108.26.060)
• Fort Wainwright (2P) Bldg. 3570 Former PX Gas FTWW-101 (File Number 108.38.078)
|
Tim Sharp |
| 7/28/2023 |
Document, Report, or Work plan Review - other |
DEC Approved the Final Year 4 Operations Maintenance and Monitoring (OM&M) Report on this date. |
Tim Sharp |
| 9/11/2023 |
Document, Report, or Work plan Review - other |
DEC reviewed the Draft 2022 Institutional Controls (IC) Report, which details the 2022 IC inspections conducted at Fort Wainwright, Alaska (FWA). The purpose of the annual IC inspection is to evaluate the implementation and effectiveness of ICs associated with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Record of Decision (ROD) source areas and Two-Party source areas on FWA. |
Tim Sharp |
| 1/31/2024 |
Document, Report, or Work plan Review - other |
On this date, DEC received and reviewed the Draft Former AAFES Service Station Year 5 Quarter 3
Technical Memorandum, describing the Quarter 3 (1 September - 30 November 2023) Air Sparge/Soil Vapor Extraction (AS/SVE) System Operations, Maintenance, and Monitoring (OM&M) activities, and summarizes the SVE effluent vapor and groundwater sampling results, at the former Army and Air Force Exchange Service (AAFES) Service Station, Building 3562, located at Fort Wainwright, Alaska. One additional groundwater
monitoring and remediation system OM&M event is scheduled: Quarter 4 in February 2024. Further
evaluation of potential downgradient contaminant migration will be provided in the Year 5 Annual Report. |
Cascade Galasso-Irish |
| 4/8/2024 |
Institutional Control Periodic Reporting |
DEC Approved the 2022 IC Report for Fort Wainwright CERCLA and Two-Party Sites on this day. |
Tim Sharp |
| 6/10/2024 |
Institutional Control Periodic Reporting |
DEC reviewed and supplied comments on the Draft 2023 Institutional Controls (IC) Report, which details the 2023 IC inspections conducted at Fort Wainwright, Alaska (FWA). The purpose of the annual IC inspection is to evaluate the implementation and effectiveness of ICs associated with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Record of Decision (ROD) source areas and Two-Party source areas on FWA. |
Tim Sharp |
| 9/23/2024 |
Document, Report, or Work plan Review - other |
The final version of the Remediation System Operation, Maintenance, and Monitoring and Quarterly Groundwater Monitoring Report Operational Year 5 Former Army Air Force Exchange Service Underground Storage Tanks Corrective Action Implementation Phase II, Former AFFES Service Station, Building 3562 Fort Wainwright, Alaska was received on September 20, 2024. The final document details the operational Year 5 (1 March 2023 - 29 February 2024) air sparge/soil vapor extraction (AS/SVE) system operations, maintenance, and monitoring (OM&M) activities; and summarizes the SVE effluent and groundwater sampling results from quarterly sampling events at Former AAFES Underground Storage Tanks Corrective Action Implementation Phase II, Former AFFES Service Station, Building 3562.
DEC has completed its review of this document. This document is now approved |
Carly Jensen |
