Site Report: FAA Northway Former Housing Apartment Bldg 110 Tank 52-A-15
| Site Name: | FAA Northway Former Housing Apartment Bldg 110 Tank 52-A-15 |
|---|---|
| Address: | Northway Airstrip, Northway, AK 99764 |
| File Number: | 170.38.014 |
| Hazard ID: | 4704 |
| Status: | Active |
| Staff: | Sarah Durand, 9074655229 sarah.durand@alaska.gov |
| Latitude: | 62.961613 |
| Longitude: | -141.935742 |
| Horizontal Datum: | WGS84 |
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We make every effort to ensure the data presented here is accurate based on the best available information currently on file with DEC. It is therefore subject to change as new information becomes available. We recommend contacting the assigned project staff prior to making decisions based on this information.
Problems/Comments
UST 52-A-15 was installed in 1985 and decommissioned in FY00. Confirmation soil samples were collected from the limits of excavation and analyzed for DRO and GRO. DRO and GRO concentrations were above ADEC cleanup criteria. Results showed 290 mg/kg GRO, 9800 mg/kg DRO and 4.438 mg/kg total BTEX. A total of 153 cu. yds of soil were removed and stockpiled on site. The stockpiled soil was analyzed for DRO and BTEX, then combined with fuel-affected soil generated from the decommissioning of other FSTs at Northway, and stockpiled on site. In FY01, the stockpile was thermally remediated at OIT, Inc., Fairbanks (Moose Creek), Alaska.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 8/26/2008 | Site Added to Database | Site added to the database. | Mitzi Read |
| 10/21/2008 | Exposure Tracking Model Ranking | Initial ranking with ETM completed for source area id: 75788 name: FAA Northway Former Housing Apartment Bldg 110. Low potential exposure to subsurface soil contaminated with arctic grade diesel. Primary contaminant is diesel but GRO and Total BTEX also exceed migration to groundwater cleanup levels. Groundwater was not encountered in the excavation, but shallow groundwater may have been impacted. Drinking water wells in are drilled into a deeper aquifer below the permafrost, so it is not anticipated that the shallow aquifer would be used as a drinking water source. | Kim DeRuyter |
| 10/21/2008 | Leaking Underground Storage Tank Cleanup Initiated - Petroleum | Heating oil tank and 153 cubic yards of potentially contaminated soil was removed in 2000. Groundwater impacts are unknown, but likely. | Kim DeRuyter |
| 11/4/2015 | Update or Other Action | Site management reassigned to Carnahan. | John Carnahan |
| 4/18/2017 | Update or Other Action | Letter sent to FAA requesting information on status of the investigations at these sites. | John Carnahan |
| 6/10/2021 | Document, Report, or Work plan Review - other | DEC sent comments on the draft 2021 RI and GWM WP. The Radio Range Tower, Power Plant Building, Water Treatment Building, and CAA Former Garage building will have work done at their locations. Surface soils and surface water will be sampled for lead and PCBs at the Radio Range Tower. Existing groundwater wells will be sampled for GRO, DRO, VOCs, PAHs at the PPB and WTB AOCs. At the Garage AOC, soil borings and groundwater monitoring wells will be installed and sampled and run for all POL CoCs, with the addition of EPH and VPH for use in HRC calculations. | Tim Sharp |
| 8/30/2021 | Site Characterization Workplan Approved | ADEC approved the Final RI and GWM WP for the FAA Northway sites. Soil borings and monitoring wells will be installed and sampled at the CAA Garage AOC, and the HRC will be used to assess if the contaminants exceed risk criteria. Surface soils and surface water will be sampled for lead and PCBs at the Former Radio Range Tower and other groundwater wells will be sampled at other AOCs for GRO, DRO, VOCs, and PAHs. | Tim Sharp |
| 5/5/2022 | Document, Report, or Work plan Review - other | ADEC sent comments on the 2021 Draft RI and Groundwater Monitoring Report for FAA Northway Station. The report details efforts to characterize and monitor contamination at several areas of concern (AOCs). Soil borings and monitoring wells were installed and sampled at the Former Civil Aeronautics Administration (CAA) Garage AOC, also known as the Basketball Court site. The Hydrocarbon Risk Calculator (HRC) was used to assess remaining risk criteria. Surface soils were sampled for lead and polychlorinated biphenyls (PCBs) at the Former Radio Range Tower AOC. Groundwater monitoring was conducted at five other AOCs. | Tim Sharp |
| 10/24/2022 | Update or Other Action | On October 21, 2022 ADEC approved the Final Remedial Investigation and Groundwater Monitoring Report | Alyssa Wood |
Contaminant Information
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Requirements
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There are no documents for this site report.
No associated sites were found.