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Site Report: Alyeska PS 12 Fuel Island Area


Site Name: Alyeska PS 12 Fuel Island Area
Address: Mile 64.7 Richardson Hwy., Pipeline Mile 735, Copper Center, AK 99573
File Number: 330.38.012
Hazard ID: 1739
Status: Cleanup Complete
Staff: ,
Latitude: 61.475900
Longitude: -145.145300
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

Alyeska Pipeline Service Co. performed a site assessment around its fuel handling area in July 1992. Soil impacted by turbine fuel and diesel fuel were detected, excavated, and thermally remediated Organic Incineration Technologies, INC in North Pole, AK. Highest contaminant concentrations were detected at 2' BGS. Concentrations quickly decreased with depth beyond 2 ft. Alyeska placed a liner over the excavation floor (2-6' BGS) to limit future releases and backfilled the excavation with clean fill.

Action Information

Action Date Action Description DEC Staff
9/2/1992 Update or Other Action Date of Corrective Action Report for Diesel Fueling Area - recommends NFA for this source area. Petroleum Hydrocarbons as diesel by PHC method all ND at 50 mg/kg for both stockpile composite samples and excavation verification samples. Keather McLoone
9/2/1992 Update or Other Action Date of Corrective Action Report for Turbine Fuel Dike Area recommending further characterization. Contamination was left in place due to close proximity of utility lines and building. Diesel concentrations left in place, from 38 samples collected, were less than Method Two migration to groundwater cleanup levels (2008) in 32 samples. Concentrations above 2008 cleanup levels were up to 4,670 mg/kg. Highest concentrations nearest utility lines. Keather McLoone
12/28/1992 Site Added to Database Site added by staff. No Longer Assigned
4/9/1993 Update or Other Action Date of Contamination Assessment Plan for the Turbine Dike Area Keather McLoone
12/17/1993 Update or Other Action Date of Contamination Assessment Report for the Turbine Fuel Offloading Area. Additional characterization was performed in this area including five soil borings and one temporary well installation with soil samples and a groundwater sample submitted to laboratory. This time analytical suite included BTEX. Benzene results were ND (at 0.2 mg/kg) and only one sample contained DRO above 2008 Method Two migration to groundwater cleanup levels at 240 mg/kg. Boring soil samples were intended to further delineate horizontal and vertical extent. Report conclusion was extent of contamination remaining was very limited beyond the containment. Neither BTEX nor DRO were detected in the groundwater sample. Keather McLoone
1/3/2008 Exposure Tracking Model Ranking Initial ranking with ETM completed. Keather McLoone
2/1/2008 GIS Position Updated Updated using Arc GIS SPAR_StatewideLocator (ArcReader) Grant Lidren
11/13/2012 Meeting or Teleconference Held Met with Alyeska (Jan Shifflett) and SLR International (Scott Rose) to discuss the case history and current operational status of this facility. Given the age of the release event (approx. 20 years old), previous remediation efforts, and low historic concentrations, it is likely that most of the contamination has been treated by natural attenuation processes. Richard Bernhardt
4/24/2013 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 78305 turbine fuel offload area. All exposure routes are now "pathway incomplete, De Minimis exposure, or exposure controlled," and this site is undergoing a closure review. Richard Bernhardt
5/2/2013 Cleanup Complete Determination Issued Impacted soil was excavated to th emaximum extent practical and thermally remediated in North Pole, AK. Inaccessible contamination beneath fixed structures has been subjected to 21 years of natural attenuation processes, so this site no poses an unacceptable risk to human health or the environment. Richard Bernhardt

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.

Missing Location Data

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