Site Report: International Aviation Tanker Rollover - MP 133.5 Parks Highway
| Site Name: | International Aviation Tanker Rollover - MP 133.5 Parks Highway |
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| Address: | MP 133.5 Parks Highway, Trapper Creek, AK 99683 |
| File Number: | 2269.38.004 |
| Hazard ID: | 27893 |
| Status: | Active |
| Staff: | Sophia Bracio-Martinez, 9074511682 sophia.bracio@alaska.gov |
| Latitude: | 62.566708 |
| Longitude: | -150.231515 |
| Horizontal Datum: | NAD83 |
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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
On December 15, 2022, a vehicle accident occurred that resulted in a head on crash between an empty methanol tanker trailer and truck, and a loaded jet fuel tanker trailer and truck. Soil that could be removed without destabilizing the adjacent slope or damaging the road was excavated. An estimated maximum of 2000 gallons of diesel removed from the soil and 828 gallons from snow. Soil estimated based on 1 gallon per cubic yard (cy) with approximately 2000 cy excavated. Leaving an estimated minimum of 500 gallons of jet fuel that was not recovered from the site due to excavation limitations of the steep slope next to the site and the roadway. Limited boring samples taken spring 2023 showed the fuel to not be significantly migrating but additional monitoring should be conducted to ensure the remaining fuel does not migrate to the Chulitna River. In 2024, two groundwater monitoring wells were installed to assess if contaminant migration to groundwater was occurring. The monitoring wells were installed in a shallow aquifer and a deeper confined aquifer. Three rounds of groundwater sampling were completed between July 2024 and April 2025. No exceedances of the applicable groundwater cleanup levels were detected.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 12/19/2022 | Potentially Responsible Party/State Interest Letter | PPR letters of state interest sent to two potential responsible parties on 12/19/2022. | No Longer Assigned |
| 10/6/2023 | Spill Transferred from Prevention Preparedness and Response Program | PPRP Site Name: International Aviation Tanker truck rollover; Spill# 22239934901; FILE# UNKNOWN; PPR Staff: Jade Gamble | Daphne Mueller |
| 10/9/2023 | Site Added to Database | A new site has been added to the database | Daphne Mueller |
| 1/11/2024 | Meeting or Teleconference Held | DEC met with representatives of the consultants and insurance company responsible for cleanup to discuss the timeline and suggestions for next steps. | Sophia Bracio-Martinez |
| 6/20/2024 | Site Characterization Workplan Approved | WORK PLAN APPROVAL: Final Groundwater Monitoring Plan, International Aviation Tanker Truck Release, Milepost 133.5 Parks Highway, North of Trapper Creek, Alaska (Geosyntec, June 2024). | Sophia Bracio-Martinez |
| 6/27/2024 | Update or Other Action | DEC received a work plan deviation request via phone call from Geosyntec to install a 5ft submerged screen instead of a 10ft screened interval intersecting the groundwater interface, due to an unsaturated clay layer being present through the top 29ft of soil. This work plan deviation was approved on 6/27/2024. | Sophia Bracio-Martinez |
| 12/11/2024 | Update or Other Action | Approved request for additional groundwater sampling event in spring 2025 due to data quality issues with fall groundwater sampling data. | Sophia Bracio-Martinez |
| 7/31/2025 | Site Characterization Report Approved | REPORT APPROVAL: Final Groundwater Characterization Report, International Aviation Tanker Truck Release, Milepost 133.5 Parks Highway, North of Trapper Creek, Alaska (Geosyntec, July 2025). Two monitoring wells were installed, and three rounds of groundwater sampling were completed. All groundwater sample results were below the applicable cleanup levels. | Sophia Bracio-Martinez |
Contaminant Information
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Control Type
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Requirements
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No associated sites were found.