Action Date |
Action |
Description |
DEC Staff |
2/3/2006 |
Site Added to Database |
Site added to the database. |
Mitzi Read |
2/3/2006 |
Spill Transferred from Prevention Preparedness and Response Program |
Site transferred from Toivo Luick, PERP, Spill Number 05309921706. |
Mitzi Read |
2/3/2006 |
Site Ranked Using the AHRM |
Soil contamination was found during the removal of a 5,000-gallon heating oil tank. Groundwater contamination associated with the HOT (spills and overfills) is unknown at the time of ranking. Groundwater contamination associated with a former UST array is documented in file # 100.26.127. This site may also be impacted by the nearby Fuel Hydrant System. |
Mitzi Read |
2/3/2006 |
Update or Other Action |
Heating Oil UST Removal Report Received. |
Mitzi Read |
2/3/2006 |
Meeting or Teleconference Held |
PM met with Amy Fuller Lyman (AA) and E&E consultants to discuss further site characterization requirements. Contamination due to the 4 USTs on the south side of the property could be NFRAPed with continued groundwater monitoring however, the HOT release, and contamination in the vicinity of MW-2 needs further characterization to determine the extent and source of groundwater contamination. Soil samples from the HOT excavation contained DRO up to 2,000 mg/kg. Only one sample was submitted for GRO and BETX analysis, this sample contained 16.2 mg/kg GRO, and was non-detect or below cleanup levels for BETX analytes. No groundwater samples were taken. |
Kim DeRuyter |
2/6/2006 |
GIS Position Updated |
Site located with TopoZone Pro with a high degree of confidence. |
Mitzi Read |
7/17/2006 |
Site Characterization Report Approved |
Site Characterization work plan proposes the installation of 4 monitoring wells using Geoprobe direct push technology, equiped with OVM, and PID to characterize soil contamination. Groundwater samples will be analyzed for GRO, BETX, and DRO. |
Kim DeRuyter |
12/18/2006 |
Update or Other Action |
2006, Annual Groundwater Monitoring/Subsurface Site Characterization Report received. Groundwater contamination in the southern plume is consistent with previous data. 15 MIP direct push borings were completed to 10 - 13' bgs to characterize the northern plume. The results of the MIP investigation indicate this plume is not the result of leaks from the FIA fuel hydrant line, but is more likely the result of leaks and overfills associated with the former buried heating oil tank and overfills of the day tank. New monitoring wells were installed to characterize this groundwater contamination, the highest concentrations were observed in MW-09; GRO 10.2 mg/L, DRO 105 mg/L and benzene at 0.4 mg/L. A monitoring well (MW08) presumed to be down gradient did not detect contamination.
Sent letter requesting the complete laboratory data package and raw MIP data which was omitted from the report. AK Airlines should sample for VOCs and PAHs to eliminate these as COCs during the next GW monitoring event.
|
Kim DeRuyter |
1/23/2007 |
Exposure Tracking Model Ranking |
Intitial Ranking Complete for Source Area: 75173 (Autogenerated Action) |
|
8/30/2007 |
Update or Other Action |
Received a call from Mike Gray with URS. URS has been hired by Alaska Air to follow up on a corrective action report that E&E was working on. He spoke with Kim DeRuyter for a history on the site and he will contact us again in a few weeks with a plan for the site. |
Ann Farris |
1/25/2008 |
Site Characterization Workplan Approved |
URS submitted workplan for gw monitoring in Spring 2008. Proposed installing 3 new wells for further characterization and will monitor existing 6 gw wells too. |
Neal Everson |
2/25/2009 |
Update or Other Action |
Reviewed reports for summer 2008 field work. Sent letter approving recommendations submitted by URS. |
Neal Everson |
9/14/2009 |
Update or Other Action |
Project manager changed to Tamara Cardona-Marek. |
Janice Wiegers |
11/24/2009 |
Document, Report, or Work plan Review - other |
DEC received the 2009 Groundwater Monitoring Report. DRO exceeded cleanup levels in wells MW-1, MW-2, MW-7, and MW-9 (up to 5.82 ppm in MW-9). GRO exceeded cleanup levels in well MW-9 (3.56 ppm). Benzene exceeded cleanup levels in wells MW-7 and MW-9 (up to 212 ppb in MW-9). DEC requested the results of the 8260 analysis, investigation of the vapor intrusion pathway, and additional groundwater gauging to identify trends that may affect contaminant migration. |
Tamara Cardona-Marek |
1/15/2010 |
Update or Other Action |
DEC received a revised version of the 2009 Groundwater Monitoring Report. New version includes the VOC analysis (8260) results for well MW-9. Some VOC's were detected but none above their respective cleanup levels. |
Tamara Cardona-Marek |
4/6/2011 |
Document, Report, or Work plan Review - other |
DEC received and reviewed the 2010 Groundwater Monitoring Report. Concentrations of DRO, GRO , and benzene exceeded the groundwater cleanup level in at least one of the wells sampled. Results are similar than the 2009 results. Building survey was submitted and DEC has determined that additional vapor intrusion evaluation must be completed. Benzene plume is beneath the portion of the building that houses the offices. Benzene levels in groundwater exceed the target level for vapor intrusion evaluation in commercial settings. |
Tamara Cardona-Marek |
4/6/2011 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 75173 Heating oil tank . |
Tamara Cardona-Marek |
5/10/2011 |
Document, Report, or Work plan Review - other |
DEC received and reviewed the 2010 Groundwater Monitoring Report. Wells MW-1, MW-2, MW-7, MW-9, and MW-11 contained levels of DRO exceeding the cleanup levels and ranging from 1.72 -14.6 mg/L. Well MW-9 contained GRO above cleanup levels at 3.69mg/L. MW-7 and MW-9 had benzene exceedong the cleanup level (0.112 and 0.168 mg/L). |
Tamara Cardona-Marek |
7/22/2011 |
Document, Report, or Work plan Review - other |
DEC received and reviewed the vapor intrusion work plan submitted by URS. Work plan proposes to install near slab vapor probes. Revisions are required prior to approval. |
Tamara Cardona-Marek |
8/1/2011 |
Site Characterization Workplan Approved |
Work plan for vapor intrusion assessment has been approved after revisions. |
Tamara Cardona-Marek |
11/1/2011 |
Document, Report, or Work plan Review - other |
DEC received the Groundwater/ Vapor Monitoring Report from URS. Four near-slab soil gas probes were installed adjacent to the source area and sampled for BTEX vapors. Although there were detections of gas in all probes , all were about half the recommended target level for commercial shallow soil gas samples. |
Tamara Cardona-Marek |
11/1/2011 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 75173 Heating oil tank . |
Tamara Cardona-Marek |
11/2/2012 |
Update or Other Action |
DEC received and reviewed the 2012 Groundwater Monitoring Report submitted by URS. Unlike previous sampling events conducted in the fall, this sampling event was conducted in the spring (May). Groundwater direction remained consistent with previous events, however elevation revealed a deeper than previous groundwater table. Free product was observed in well MW-9. Benzene was the only constituent above cleanup levels in well MW-7. |
Tamara Cardona-Marek |
10/28/2013 |
Update or Other Action |
Site symbol visually adjusted using ArcGIS and documents from file. 10/28/13; MLB. 64.814464, -147.873742. |
Michelle Barnes |
1/26/2015 |
Document, Report, or Work plan Review - other |
DEC received 2014 Groundwater Monitoring Report submitted by URS. Contaminants of concern (COCs) above cleanup levels continue to be observed in the area surround the former underground heating oil tank. DRO increased in MW-2 and decreased in MW07, MW09 and MW-11, all still in excess of cleanup levels. GRO and benzene exceeded cleanup levels in MW09, and benzene continued to exceed cleanup levels in MW07. Analytes from upgradient well MW-10 and downgradient wells MW08 and MW-12 remain below COCs cleanup levels and do not appear to be increasing. |
Robert Burgess |
2/11/2016 |
Document, Report, or Work plan Review - other |
The ADEC reviewed the 2014 and 2015 Groundwater Monitoring Report. Contaminants of concern including DRO, GRO and benzene continue to exceed groundwater cleanup levels and remain localized within and close to the former location of the underground heating oil tank. To determine if the size of the dissolved plume is steady state or shrinking, a trend analysis of contaminant concentrations was requested. A discussion on groundwater flow direction and gradient trends were requested in the next site characterization report. The next groundwater sampling event will be during the spring or summer of 2016. |
Shawn Tisdell |
1/31/2017 |
Document, Report, or Work plan Review - other |
Received Groundwater Monitoring Report for 2016 sampling event. |
Shawn Tisdell |
3/31/2017 |
Site Characterization Report Approved |
The Alaska Department of Environmental Conservation (DEC), has reviewed the January 31, 2017 Groundwater Monitoring Reports for the above listed facility. Results indicated that contaminants of concern (COCs) including diesel range organics (DRO), gasoline range organics (GRO), benzene, ethylbenzene and xylene exceed groundwater cleanup levels and remain localized within and close to the former location of the underground heating oil tank. A sheen was observed in MW02, MW07 and MW09. A significant trend to determine whether the contaminant plume was steady state or decreasing could not be determined with available data. Perimeter wells MW08, MW10 and MW12 did not exceed cleanup levels. |
Shawn Tisdell |
4/3/2017 |
Meeting or Teleconference Held |
DEC staff met with an Alaska Airlines Environmental Affairs manager via a teleconference to discuss upcoming site activities with a newly selected consultant from SLR International Corporation. A groundwater monitoring event will be conducted during 2017 and the site will be evaluated for closure. |
Shawn Tisdell |
4/5/2017 |
Meeting or Teleconference Held |
Meeting was held with DOT environmental staff to discuss Fairbanks International Airport contaminated site status. |
Shawn Tisdell |
8/28/2017 |
Update or Other Action |
DEC approved transport of approximately 45 gallons of fuel contaminated soil to OIT. Soil will be generated during well replacement and work is planned for August 31st. |
Janice Wiegers |
1/23/2018 |
Meeting or Teleconference Held |
DEC staff met with DOT staff to discuss general coordination of contaminated site issues regarding leased properties at the Fairbanks International Airport and specific site information including cleanup activity status and upcoming work or proposed state action. |
Shawn Tisdell |
3/22/2018 |
Document, Report, or Work plan Review - other |
Reviewed 2017 groundwater monitoring report. During the June sampling event, frost jacking impacted several wells and damage to wells MW09 and MW07 was observed. MW09 was repaired. MW07 could not be repaired so it was decommissioned and replaced prior to the September 2017 sampling event. The replacement well is labeled MW-07R.
Results of the monitoring events are similar to previous events. Groundwater flow direction is northward and contaminants of concern exceed groundwater cleanup levels in MW02, MW-07R and MW09 but not in perimeter wells MW08, MW10 and MW12. An additional sampling event is recommended between late June and August 2018. |
Shawn Tisdell |
6/5/2018 |
Update or Other Action |
Reviewed responses to report, a groundwater sampling event is scheduled for the week of June, 18, 2018. |
Shawn Tisdell |
3/12/2019 |
Meeting or Teleconference Held |
DEC and DOT staff met to discuss progress and potential future cleanup action at this site. |
Shawn Tisdell |
6/5/2019 |
Document, Report, or Work plan Review - other |
DEC reviewed a report titled "2018 Groundwater Monitoring Report" which provides details for the June 15th, 2018 groundwater sampling event. Seven wells were sampled. Benzene, ethylbenzene, total xylenes, 1,2,4- and 1,3,5- trimethlybenzene, 1- and 2-methylnaphthalene, and naphthalene exceeded cleanup levels. Contaminant in the groundwater remain near the source area with levels reported to remain generally stable or decreasing. |
Shawn Tisdell |
4/29/2020 |
Document, Report, or Work plan Review - other |
Reviewed and provided comments on the 2019 Groundwater Monitoring Report. Groundwater concentrations are relatively stable. Polyaromatic hydrocarbons were tested during this event and naphthalene was detected above cleanup levels in the upgradient wells MW-10 and MW-11 (0.0049 and 0.0075 µg/L). A request is made in this report for site closure.
Comments provided by ADEC requested clarification and modification to the report and a request for a review of site closure criteria and evaluate if this site meets that criteria. |
Shawn Tisdell |
6/19/2020 |
Offsite Soil or Groundwater Disposal Approved |
ADEC approval provided for disposal of approximately 20 gallons of purge water from groundwater sampling events. The purge water will be transported to Clean Harbors Aragonite Incineration facility near Dugway, UT. |
Shawn Tisdell |
6/19/2020 |
Site Characterization Report Approved |
DEC approved of revised 2019 Groundwater Monitoring Report. |
Shawn Tisdell |
3/1/2021 |
Workplan Requested |
Request was made for well decommissioning workplan to be submitted. |
Shawn Tisdell |
5/3/2021 |
Document, Report, or Work plan Review - other |
ADEC reviewed Final Cleanup Report and Closure Plan, provided comments including request for additional groundwater trend evaluation to demonstrate that the size of the dissolved plume is steady state or shrinking. |
Shawn Tisdell |
7/15/2021 |
Document, Report, or Work plan Review - other |
Amended Final Cleanup Report and Closure Plan received and is under review. |
Shawn Tisdell |
7/20/2021 |
Document, Report, or Work plan Review - other |
Updated Final Cleanup Report and Closure Plan received. This report included a response to comments on the 9/2020 Initial Cleanup Report and included a Mann-Kendal trend analysis. |
Shawn Tisdell |
5/6/2022 |
Meeting or Teleconference Held |
A meeting was held with DEC and site consultant staff from SLR to discuss site closure steps. A well decommissioning work plan was requested. An Environmental Covenant will be required for site closure, as institutional controls will be necessary to manage contamination that will remain at this site. |
Shawn Tisdell |
6/6/2022 |
Document, Report, or Work plan Review - other |
The Updated Final Cleanup Report and Closure Plan was reviewed and approved. |
Shawn Tisdell |
9/7/2022 |
Site Characterization Workplan Approved |
The July 2022 Well Decommissioning Work Plan was reviewed and approved. Six onsite wells, including MR-7R, MW-08, MW-10, MW-11, and MW-12 are planned for decommissioning during September or October of 2022. |
Shawn Tisdell |
11/2/2022 |
Document, Report, or Work plan Review - other |
Final documentation of well decommissioning work received. Six wells: MW-7R, MW-08, MW-09, MW-10, MW-11 and MW-12 were decommissioned in accordance with the ADEC-approved well decommissioning work plan. |
Shawn Tisdell |