Site Report: FAA Biorka Island RCAG
| Site Name: | FAA Biorka Island RCAG |
|---|---|
| Address: | Radar Facility, UST, FAA ID # 47-B-01, Sitka, AK 99835 |
| File Number: | 1542.38.001 |
| Hazard ID: | 2546 |
| Status: | Cleanup Complete |
| Staff: | No Longer Assigned, 9074655229 dec.icunit@alaska.gov |
| Latitude: | 56.851444 |
| Longitude: | -135.552861 |
| Horizontal Datum: |
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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
Site included one diesel UST, FAA ID # 47-B-01. The tank was removed in 1996. 35 cubic yards of diesel contaminated soil were removed. Five cyds of contaminated soil were removed during tank closure. Further excavation in October 1996 removed an additional 35 cyds of contaminated soil, confirmation sample results from the limits of the excavation were either non-detect, or below the Method 2 Migration to Groundwater Cleanup levels. DEC Project Manager Elizabeth Stergiou issued a closure determination for the UST on December 18, 2001. The site remained open because FAA included an area of stained soil from a former drum storage area as part of this site, or "Area of Concern". Biorka Island is 15 Miles SW of Sitka.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 12/18/2001 | Leaking Underground Storage Tank Cleanup Initiated - Petroleum | Review of the administrative file indicates that UST 47-B-01 was removed and decommissioned in August 1996. Five cyds of contaminated soil were removed during tank closure. Further excavation in October 1996 removed an additional 35 cyds of contaminated soil. Confirmation samples detected RRO to 196 mg/kg, toluene to 1.156 mg/kg, and xylenes to 19.51 mg/kg, all results were either non-detect, or below the Method 2 Migration to Groundwater Cleanup levels. DEC Project Manager Elizabeth Stergiou issued a closure determination for the UST on December 18, 2001. The site remained open because FAA included an area of stained soil from a former drum storage area as part of this site, or "Area of Concern". | Kim DeRuyter |
| 12/20/2001 | Site Added to Database | Diesel. | Elizabeth Stergiou |
| 12/20/2001 | Site Ranked Using the AHRM | Initial ranking. | Elizabeth Stergiou |
| 3/7/2002 | Meeting or Teleconference Held | Site visit with FAA representatives. | Elizabeth Stergiou |
| 3/18/2002 | Update or Other Action | See FAA Biorka Island for facility actions. | Elizabeth Stergiou |
| 1/26/2006 | Institutional Control Record Established | All work performed for the Federal Aviation Administration (FAA) requires completion and approval of a Project Environmental and Occupational Safety and Health Worksheet (EOSH Worksheet). The EOSH Worksheet is a tool that allows project managers to identify potential hazards and contamination, take appropriate measures to avoid hazards and manage contamination appropriately, to minimize environmental impacts, determine whether environmental assessment is required prior to beginning work, and to minimize fines and/or penalties associated with non-compliance with federal and state regulations. It also acts a mechanism to identify when outside agency permits are necessary. Specific portions of the EOSH Worksheet address: the presence/absence of endangered species, activities conducted in wetlands or anadromous streams, whether work will occur on a contaminated site or involve activities associated with fuel tanks, fuel distribution lines, oil-containing transformers, groundwater monitoring wells, floor drains, and generation and handling of hazardous waste. To ensure all issues are appropriately considered, the worksheet is to be reviewed after each phase of project development and implemenation. This form is to be kept with project progress documents throughout the project. | Sharon Richmond |
| 4/23/2008 | Exposure Tracking Model Ranking | Initial ranking with ETM completed. | Sharon Richmond |
| 1/5/2010 | Update or Other Action | During an FY90 Site Investigation, stained soil was identified under two 55 gallon drums that were stored at the RCAG/Radar site. The drums appeared to contain rainwater and ashes. A 20 sq. ft. area of oil stained soil was observed below the drums, with the staining extending to a depth of one inch. Soil samples were collected for analysis and no PCBs or hydrocarbon compounds were detected above ADEC cleanup levels. TCLP metals results were below regulatory levels. During the FY94 ESI, the two drums and their contents were disposed of at the Sitka Landfill, a small area of stressed vegetation was fertilized and seeded. In 2008, FAA personell and DEC staff visited the area and could not locate the stained soils. The area had either revegetated or had been developed over during construction of the new EG building. No further action is required at this area of concern. | Kim DeRuyter |
| 1/5/2010 | Leaking Underground Storage Tank Release Confirmed - Petroleum | LUST site created in CSP database for source area UST 47-B-01 500 gal diesel, 73523. Review of the LUST database indicates this was a regulated tank. | Kim DeRuyter |
| 1/7/2010 | Update or Other Action | Re-ranked the site in the Exposure Tracking Model, based on current file review and sample results from the soil stains which eliminated the potential concern for cumulative risk, and vapor intrusion. All pathways are either incomplete or de minimis exposure. | Kim DeRuyter |
| 1/7/2010 | Cleanup Complete Determination Issued | Kim DeRuyter |
Contaminant Information
| Name | Level Description | Media | Comments |
|---|---|---|---|
| DRO | < Method 2 Most Stringent | 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.