Site Report: FAA Yakutat Building 102
| Site Name: | FAA Yakutat Building 102 |
|---|---|
| Address: | Building 102, FAA Tank 56-C-001, Yakutat, AK 99689 |
| File Number: | 1530.38.007 |
| Hazard ID: | 4165 |
| Status: | Cleanup Complete |
| Staff: | No Longer Assigned, 9074655229 dec.icunit@alaska.gov |
| Latitude: | 59.512412 |
| Longitude: | -139.672910 |
| 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
Housing Building 102 had an associated 4,000-gal heating oil UST (UST 56-C-1) on the northeast side of the building. The UST was decommissioned on 6/18/97. Approximately 75 cu.yds of fuel-affected soil were removed and stockpiled on site. According to FAA, the stockpiled soils were placed in supersaks and sent to TPS Technologies in Seattle, WA for treatment. A FY97 release investigation concluded that soil contamination had reached groundwater and had migrated to the south. Some groundwater samples exceeded DRO proposed cleanup levels. The estimated volume of in-situ contaminated soil is 90 - 200 cu. yds, assuming an average thickness of 3 feet of contaminated soil. It was recommended that contaminated soil be excavated and that surface and near surface soils be used as backfill. Based on groundwater flow direction, it was determined that groundwater contamination is not likely to affect drinking water wells, and it is expected to naturally attenuate over time. Future activities include site characterization in FY04, followed by RAP in FY05, RAC in FY06, and site closure in FY07.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 8/11/1997 | Update or Other Action | 4000-gallon heating oil UST removed from FAA Housing Building 102. Approximately 75 cubic yards of fuel-affected soil was excavated in an effort to rmove the bulk of the gross contamination. Soils at the limits of the excavation were notably contaminated. The contamination was most prevalent near the groundwater interface. Estimated 75 cubic yards of fuel-affected soil remain on site. Confirmation sampling at limits of excavation showed up to 5900 mg/kg DRO in soil remaining | Debra Caillouet |
| 9/1/1997 | Update or Other Action | A release investigation occurred in September 1997 and the results were reported in the Final Release Investgation Report, Federal Aviation Administration Yakutat Station, January 8, 1998. The report concluded that the soil contamination associated with the former UST at Building 102 is restricted to the immediate area beneath the former tank. In this area, the soil contamination has reached gwoundwater and is present in the smear zone near the shallow water table. Based on data collected during the RI and the tank removal, the estimated volume of contmaed soil insitur at Building 102 is approximately 15-31 cubic yards. | Debra Caillouet |
| 8/6/2004 | Site Characterization Workplan Approved | Staff approved the Work Plan-Expanded Release Investigation Buildings 101, 102, 607 and VORTAC | Mike Jaynes |
| 11/23/2005 | Site Ranked Using the AHRM | SITE RANKED | Debra Caillouet |
| 11/23/2005 | Site Added to Database | Site added to the database. | Debra Caillouet |
| 3/6/2007 | Update or Other Action | Staff provided comment on the Draft Addendum to Site Investigation Work Plan, Former FAA Housing Buildings Nos. 101 and 102, Generator Building No. 607 and the VOR | Debra Caillouet |
| 3/7/2007 | Update or Other Action | Staff prepared comments on the draft site characterization report for buildings 101, 102, 607 and VOR | Debra Caillouet |
| 9/6/2007 | Exposure Tracking Model Ranking | Debra Caillouet | |
| 9/6/2007 | Site Characterization Report Approved | review of final Site Conditions Summary Report Former FAA Housing Buildings Nos 101 and 012, Generator Building No 607 and VOR. Max DRO in subsurface soil 1540 mg/kg | Debra Caillouet |
| 11/7/2007 | Cleanup Complete Determination Issued | Closure letter by Colin Craven this date | Debra Caillouet |
Contaminant Information
| Name | Level Description | Media | Comments |
|---|---|---|---|
| DRO | Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation | Soil |
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.