| Action Date |
Action |
Description |
DEC Staff |
| 8/16/2011 |
Site Added to Database |
A new site has been added to the database |
Mitzi Read |
| 8/30/2011 |
Site Visit |
Drive-by inspection of FAA housing area. |
Debra Caillouet |
| 9/1/2011 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 79132 name: 500-Gal UST (UST 28-G-13) |
Debra Caillouet |
| 9/6/2011 |
Site Characterization Report Approved |
Cold Bay Site Investigation, Release Investigation Report, Final, August 2011 |
Debra Caillouet |
| 7/6/2015 |
Site Characterization Workplan Approved |
Draft Work Plan, Groundwater and Vapor Intrusion Sampling, FAA Cold Bay Station, June 2015 Groundwater will be sampled at Buildings 101, 102, 104, 107 and 207. Soil gas and air samples will be collected at the residential building potentially impacted by the release at 207. |
Debra Caillouet |
| 12/10/2015 |
Meeting or Teleconference Held |
DEC staff attended a meeting with FAA PM Raymore to discuss the current status and path forward at the FAA Cold Bay Station sites. Planned work includes an evaluation of remediation technologies for the contamination detected in soil and groundwater. |
Monte Garroutte |
| 2/4/2016 |
Document, Report, or Work plan Review - other |
The Alaska Department of Environmental Conservation (DEC) approved the Groundwater Sampling Report, Cold Bay Groundwater Sampling and Feasibility Study, Cold Bay, Alaska. This report summarizes the 2015 groundwater sampling activities which were conducted at the FAA Cold Bay sites. This included the investigation of the following six areas of concern (AOCs): 1. Building 101 – Former Living Quarters 2. Building 102 – Former Living Quarters 3. Building 104 – Former Living Quarters 4. Building 107 – Former Living Quarters 5. Building 207 – Former Water Treatment Plant 6. Building 208 – Former Gasoline Shed DRO exceeds the groundwater cleanup level in at least one well at each AOC. Free product is present in well MW-12H, which is in the Building 207 AOC. Recommendations for each AOC will be addressed in the upcoming feasibility study for the site. |
Monte Garroutte |
| 7/26/2016 |
Document, Report, or Work plan Review - other |
DEC approved the FAA Cold Bay Vapor Intrusion Investigation Report. This report details a vapor intrusion (VI) investigation conducted at the site of a diesel underground storage tank (UST) release at former Building 207 of the Federal Aviation Administration (FAA) station located in Cold Bay, Alaska. The purpose of the work was to collect VI data in and around a residential structure adjacent to the UST release site to assess the migration to indoor air exposure pathway resulting from subsurface contamination beneath the adjacent Building 207 and to make a determination if there is a need to mitigate for vapor exposures to occupants of the residence. Analytical results for the vapor samples showed that concentrations of naphthalene exceeded DEC target levels for a portion of the crawlspace and indoor air samples. Although naphthalene is a common derivative compound detected in petroleum release investigations, collective consideration of all the analytical results conclude that the naphthalene detected in samples is likely associated with a volatile contaminant source inside the structure. It was concluded that subsurface vapors associated with the Building 207 subsurface hydrocarbon source are not migrating to the adjacent residence at concentrations that would pose a health risk to its occupants.
|
Monte Garroutte |
| 1/14/2019 |
Document, Report, or Work plan Review - other |
DEC approved the In-Situ Remediation Pilot Study and Product Bail-Down Testing Final Report, Cold Bay Alaska (Dated December 2018). The report describes field activities and results from an in-situ remediation pilot study and product bail-down test at the Federal Aviation Administration (FAA) section in Cold Bay, Alaska. The purpose of the study was to evaluate in-situ chemical oxidation (ISCO) as a remedial alternative for the site. Bail-down testing was performed to determine whether development of a product recovery system would be a viable option. Recommendations from the report were, the ISCO pilot study test is not recommended for this site, and bail down testing indicated that product was not practically recoverable. Other remedial alternatives may need to be explored for future site cleanup work at the FAA sites. |
Erica Blake |
| 5/19/2021 |
Document, Report, or Work plan Review - other |
ADEC provides comment on the "Draft Groundwater Monitoring and Investigation Work Plan Revision 0" dated February, 2021. This work plan proposes to do groundwater monitoring at this AOC (as well as work at other AOCs). |
Jessica Hall |
| 6/6/2024 |
Document, Report, or Work plan Review - other |
The Alaska Department of Environmental Conservation (DEC) approved the 2024 Remedial Action, Site Investigation, and Groundwater Monitoring Work Plan, Cold Bay, Alaska. This work plan describes remedial actions, site investigation activities, and groundwater monitoring events at FAA Cold Bay sites. This includes remedial actions at the following twelve areas of concern (AOCs): 1. Building 101 – Former Living Quarters 101. 2. Building 102 – Former Living Quarters 102. 3. Building 103 – Former Living Quarters 103. 4. Building 104 – Former Living Quarters 104. 5. Building 107 – Former Living Quarters 107. 6. Building 138 – Former Living Quarters 138 7. Building 139 - Former Living Quarters 139 8. Building 207 - Former Water Treatment Plant 9. Building 208 - Former Gasoline Shed Building 10. Building 200 - Former Community Services Facility 11. Building 411 - International Flight Service Station Transmitter Spill Area 12. Building 416 - Oil Leak Spill Area. Groundwater Monitoring Events will occur at Building 101, Building 102, Building 103, Building 104, Building 107, Building 139, Building 207, and Building 208. Site Investigations will occur at 1. FAA Shop Building 601 and 2. Building 416 - SSALR Oil Leak Spill Area |
Alyssa Wood |
