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Site Report: Alyeska PS 05 Turbine Fuel Spill


Site Name: Alyeska PS 05 Turbine Fuel Spill
Address: Mile 137 Dalton Highway, Coldfoot, AK 99701
File Number: 330.38.120
Hazard ID: 25440
Status: Cleanup Complete - Institutional Controls
Staff: IC Unit, 9074655229 dec.icunit@alaska.gov
Latitude: 66.813056
Longitude: -150.665028
Horizontal Datum:WGS84

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 March 25, 2009, Alyeska personnel noticed smoke and observed discoloration of snow at the Solar™ generator. Turbine fuel, which is used to power these generators, was observed leaking from the Solar™ generator enclosure onto the snow covered ground. The spill volume was estimated by Alyeska to be 15 gallons. The following month, Alyeska excavated contaminated soil but impacted soil beneath and directly adjacent to the Solar™ generator was not excavated because removal of this soil would have undermined the footings. Confirmation samples were collected with concentrations up to 0.386 mg/kg benzene, 10.7 mg/kg toluene, 21.7 mg/kg ethylbenzene, 141.2 mg/kg xylenes, 1,560 mg/kg GRO, 4,060 mg/kg DRO, and 26,000 mg/kg RRO.

Action Information

Action Date Action Description DEC Staff
7/29/2009 Spill Transferred from Prevention Preparedness and Response Program Spill transferred by PERP staff John Ebel. Spill number = 09309908401; spill date = 3/25/09; substance = turbine fuel; quantity = ~20 gallons. Mitzi Read
8/4/2009 Site Added to Database A new site has been added to the database Mitzi Read
9/22/2009 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 78803 name: Alyeska PS 05 Turbine Fuel Spill based on concentration information in site description alone. Keather McLoone
10/26/2009 Report or Workplan Review - Other Completed review of report turned over from PERP. Review included laboratory review checklist. Earlier review had been conducted to determine only that this was a candidate for CC with ICs and that the work was generally conducted according to regulation. Impacted soil beneath and directly adjacent to the Solar generator was not excavated because this would have undermined the building's footings. Approximately 36 cubic yards of soil were removed for transportation at OIC. 29 soil samples were collected and field screened using PID. Ten soil samples were sent to the laboratory for analytical confirmation. Extent of potentially accessible contamination deminimis. Keather McLoone
10/28/2009 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 78803 Alyeska PS 05 Turbine Fuel Spill. Keather McLoone
11/12/2009 Cleanup Complete Determination Issued The Alaska Department of Environmental Conservation, Contaminated Sites Program (ADEC) has completed a review of the environmental records associated with Alyeska PS 05 Turbine Fuel Spill site located near Coldfoot, Alaska. 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 no further remedial action will be required as long as the site is in compliance with established institutional controls. Keather McLoone
11/12/2009 Institutional Control Record Established Institutional Controls established and entered into the database. Keather McLoone
12/1/2011 Update or Other Action The current project manager chose to retain management of this site with the Cleanup Complete Determination that has Institutional Controls. Kristin Brown
11/12/2013 Institutional Control Compliance Review IC compliance review conducted and staff changed from Linda Nuechterlein to IC Unit. Reminder system set-up to follow-up with the responsible party in late 2014. Kristin Brown
1/2/2015 Institutional Control Update An IC reminder letter was issued to the responsible party on this date. Kristin Brown
2/2/2015 Institutional Control Update The responsible party responded to ADEC's Institutional Controls reminder letter. The site remains in compliance with all institutional controls. There have been no changes in land use or ownership since the 2009 Record of Decision was issued. Kristin Brown

Contaminant Information

Name Level Description Media Comments
BTEX > Human Health/Ingestion/Inhalation Soil original spill volume was estimated to be 15 gallons and then 36 cubic yards of accessible contamination removed - extent of contamination is considered de minimis
GRO > Human Health/Ingestion/Inhalation Soil original spill volume was estimated to be 15 gallons and then 36 cubic yards of accessible contamination removed - extent of contamination is considered de minimis
RRO > Human Health/Ingestion/Inhalation Soil original spill volume was estimated to be 15 gallons and then 36 cubic yards of accessible contamination removed - extent of contamination is considered de minimis

Control Type

Type Details
Signed CS Determination

Requirements

Description Details
Advance approval required to transport soil or groundwater off-site.
When Contaminated Soil is Accessible, Remediation Should Occur

Missing Location Data

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