Site Report: FAA Big Delta Station Bldg 601 Former Utility Facility
| Site Name: | FAA Big Delta Station Bldg 601 Former Utility Facility |
|---|---|
| Address: | 3 Miles South of Delta Junction, Allen Airfield, Fort Greely, Delta Junction, AK 99737 |
| File Number: | 120.38.004 |
| Hazard ID: | 25285 |
| Status: | Cleanup Complete |
| Staff: | No Longer Assigned, 9074655229 dec.icunit@alaska.gov |
| Latitude: | 63.993579 |
| Longitude: | -145.741024 |
| 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
The former Utility Facility consists of Building 601 and adjacent areas. Building 601 is located at the west end of the quarters area tract. Building 601 housed the drinking water and heating system for the quarters area, a repair shop with an auto bay, and a general storage area. There was one 2,000-gallon AST (6-A-003) located 2 feet east of northeast corner of Building 601. This AST contained heating oil. Stained soil was observed at the ground surface between the AST and the north side of Building 601. Two floor drains were also located in the building.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 12/8/2008 | Site Added to Database | A new site has been added to the database | Mitzi Read |
| 12/4/2009 | Cleanup Complete Determination Issued | The Alaska Department of Environmental Conservation, Contaminated Sites Program has completed a review of the environmental records associated with the FAA Big Delta Facility which includes Regulated Tanks at the RCAG and VORTAC facilities, the Fuel Transfer Station, Building 601, Building 603, Building 604, Building 400, and two areas identified as Tar and Debris sites. Based on the information provided to date, it has been determined that the contaminant concentrations remaining on site do not pose an unacceptable risk to human health or the environment and this site will be closed. Due to the potential presence of petroleum contaminated soil above the migration to groundwater pathway cleanup level for DRO (250 mg/kg), and one small area of PCB contaminated soil that is slightly above the direct contact level of 1 mg/kg, the landowner (US Army Fort Greely) will record the area of residual contamination in the Property Management System and Master Land Use Plan in accordance with 18 AAC 75.375 (b)(4), and notify DEC if the current land use changes. | Tana Robert |
| 12/10/2009 | Exposure Tracking Model Ranking | Initial ranking with ETM completed for source area id: 78624 name: Former Floor Drains | Tana Robert |
| 12/10/2009 | Exposure Tracking Model Ranking | Initial ranking with ETM completed for source area id: 78625 name: 2,000-gallon AST (AST 6-A-003) | Tana Robert |
| 7/23/2015 | Update or Other Action | DEC issued a determination to the Federal Aviation Administration (FAA) regarding the maintenance of closure conditions at four contaminated sites at the Big Delta FAA Station. Following correspondence with the US Army, the landowner of the sites, it was determined that the FAA Big Delta sites had been integrated into the Ft. Greely Land Management System, and that the land management system’s protocols ensured that the closure conditions at the FAA Big Delta sites would be maintained. Therefore, The US Army has demonstrated to the Department’s satisfaction that processes are in place that ensures future site users that the residual contamination is defined on planning maps and will be taken into consideration when any future construction projects in the area are planned. This determination will be attached to the DEC Contaminated Sites Program Database site entries. | Monte Garroutte |
Contaminant Information
| Name | Level Description | Media | Comments |
|---|---|---|---|
| PCBs - Total | Other | Soil | The boiler room North floor drain discharged directly into the soil. A sample collected from the excavation east sidewall collected 2 inches below the concrete slab had a PCB result of 1.32 mg/Kg PCB which was slightly above the direct contact level of 1 mg/kg. |
| DRO | Other | Soil | The spetic system lift tank sample results indicated DRO at 429 mg/Kg in soil above the migration to groundwater pathway cleanup level for DRO (250 mg/kg). Groundwater is estimated to be between 175-225 feet below ground surface. |
Control Type
| Type | Details |
|---|---|
| No ICs Required |
Requirements
| Description | Details |
|---|---|
| Advance approval required to transport soil or groundwater off-site. |
No associated sites were found.