Site Report: Dutch Hbr-Mt. Ballyhoo Batteries and Stand-Alone Transformer
| Site Name: | Dutch Hbr-Mt. Ballyhoo Batteries and Stand-Alone Transformer |
|---|---|
| Address: | Ulatka Drive, Mt. Ballyhoo, Unalaska, AK 99685 |
| File Number: | 2542.38.014 |
| Hazard ID: | 25717 |
| Status: | Active |
| Staff: | Sarah Bernhardt, 9072697527 sarah.bernhardt@alaska.gov |
| Latitude: | 53.915321 |
| Longitude: | -166.522816 |
| 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
Four batteries and a stand alone transformer were discovered in 1996 site investigations. They were located off a road not mapped on the Ft. Schwatka site, and the road type was not consistent with other roads from that period.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 5/1/2000 | CERCLA RI Report Approved | The Comprehensive Remedial Investigation Report was received. This document discusses the field activities and results from 1996, 1997, 1998, and 1999. Activities included site investigations (SI), Interim Removal actions (IRA) and Remedial Investigations (RI). These various activities were performed at 56 sites throughout the entire Amaknak/Unalaska FUDS. Sampling was conducted to determine both site-specific as well as background levels of contaminants of concern. 93 USTs, 1 AST, associated piping, and 230 drums, contaminated liquid, sludge, and soil were removed during the IRA. Soil borings were drilled, monitoring wells installed and samples were taken to determine type and extent of contamination. Where appropriate a Method Three ACL was calculated. 31 sites are recommended for no further action (NFA) and 25 sites were recommended for further remedial action. No further action is recommended for the Mt Ballyhoo Batteries and Stand-Alone Transformer until it has been determined if the site is FUDS related. | Meghan Dooley |
| 6/13/2003 | CERCLA SI | The 2001/2002 Islandwide SI/RI/IRA Report was received. The report documents the work completed during the 2001 and 2002 field seasons at various sites throughout Amaknak and Unalaska. Three cubic yards of contaminated soil and sained wood were excavated and removed from the site. Two confirmation samples were collected and elevated levels of DRO and arsenic were reported. Three locations downgradient from the excavation were sampled in 2002 to determine if contamination was migrating from the site. Arsenic was the only analyte detected above cleanup levels in the downgradient samples, however it is considered comparable to background levels. The report recommends the site for no further action and that institutional controls be implemented becuase of the localized and elevated levels of DRO. | Meghan Dooley |
| 9/15/2011 | Site Added to Database | A new site has been added to the database | Mitzi Read |
| 9/23/2011 | Exposure Tracking Model Ranking | Initial ranking with ETM completed for source area id: 79157 name: Dutch Hbr-Mt. Ballyhoo Batteries and Stand-Alone Transformer | Meghan Dooley |
| 3/12/2024 | Document, Report, or Work plan Review - other | DEC reviewed the Draft Final Mt. Ballyhoo Recreation and Postal Exchange (Rec-px) Transformer Vault Removal Action and Characterization / Battery And Stand-alone Transformer Site Investigation Report Unalaska, Alaska, dated February 2024. The report describes the investigation activities conducted during the spring of 2023 at the Recreation and Postal Exchange (Rec-PX) Transformer Vault at Mt. Ballyhoo in Unalaska, Alaska. Surface soil samples were collected and analyzed for diesel range organics (DRO), lead, and polychlorinated biphenyls (PCBs). Lead was the only contaminant exceeding DEC’s most stringent cleanup levels. The report recommended the removal of existing lead contamination and further characterization of the subsurface near the transformer vault. DEC recommends that an additional analytical sample be collected, directly north of the existing lead exceedance, concurrent with the planned removal action, to ensure adequate delineation of lead in all cardinal directions. | Ginna Quesada |
Contaminant Information
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Control Type
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Requirements
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No associated sites were found.