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Site Report: Alyeska PS 10 Fuel Island


Site Name: Alyeska PS 10 Fuel Island
Address: Mile 218 Richardson Hwy., Pump Station 10, Paxson, AK 99737
File Number: 330.38.077
Hazard ID: 2682
Status: Cleanup Complete - Institutional Controls
Staff: IC Unit, 9074655229 dec.icunit@alaska.gov
Latitude: 63.423500
Longitude: -145.770000
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

In October 1996, Alyeska workers discovered approximately 9 square feet of stained soil near the Pump Station 10 fuel island. According to the report, it appears that the contamination may be under the dispenser island. Elevated DRO and GRO soil samples were found adjacent to the fuel island down to 2 feet below ground surface.

Action Information

Action Date Action Description DEC Staff
6/1/1998 Update or Other Action Alyeska submitted "Contamination Assessment Workplan PS10 Fuel Island" Deborah Williams
12/31/1998 Update or Other Action Alyeska submitted a PS10 Fuel Island Contamination Assessment Report. The conclusion of the report was that impacted soil at the site is minor, and restricted to the base of the diesel fuel dispenser. Four hand auger borings were advanced in the fuel island area and contained concentrations up to 520 mg/kg gasoline range organics (GRO) and 2,100 mg/kg diesel range organics (DRO) were found directly adjacent to the diesel pump. Benzene, toluene, ethylbenzene, and xylenes (BTEX) were below Method Two migration to groundwater cleanup levels. Two hollow-stem auger borings were advanced and one developed into a monitoring well. Soil sample results from these borings were nondetect for GRO, DRO and BTEX. A single water sample was collected from the monitoring well and contained nondetectable concentrations of GRO, BTEX and polynuclear aromatic hydrocarbons (PAHs). Deborah Williams
10/30/2000 Site Added to Database Elevated DRO and GRO soil samples were found adjacent to the fuel island. Bruce Wanstall
10/30/2000 Site Ranked Using the AHRM Initial ranking. Deborah Williams
1/10/2008 Exposure Tracking Model Ranking Initial ranking with ETM completed. Keather McLoone
6/10/2008 Conditional Closure Approved The Alaska Department of Environmental Conservation (ADEC), Contaminated Sites Program, reviewed the environmental records associated with site Alyeska Pump Station 10 Fuel Island. This site had been contaminated by the release of a hazardous substance; however, based on the information provided to date, ADEC has determined that no further remedial action is required, and that Alyeska Pump Station 10 Fuel Island can be closed subject to the conditions outlined in this document. The hazardous substance contamination has been adequately addressed and does not pose an unacceptable risk to human health or the environment Keather McLoone
6/10/2008 Institutional Control Record Established 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 is required at Pump Station 10 Fuel Island. This determination is subject to the following conditions: 1. A Notice of Residual Contamination will be recorded on the ADEC database to document residual contamination remaining on site above the most stringent ADEC cleanup levels. This will serve as notification to future owners/operators of the property of the environmental status of the site and any conditions that apply to future management of contamination. 2. ADEC approval is required prior to off site transport of soil or groundwater in accordance with 18 AAC 75.370 (b). 3. Groundwater wells shall not be installed on this property without prior approval from ADEC. 4. Soil containing residual contamination may not be placed in surface water or other environmentally sensitive areas. 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 Update or Other Action Staff changed from Linda Nuechterlein to IC Unit. Kristin Brown
2/5/2014 Institutional Control Update An IC reminder letter was issued to the responsible party on this date. Kristin Brown
5/17/2017 Institutional Control Compliance Review IC compliance review conducted. ICs Verification letter issued. This site has a groundwater use restriction. Reminder system set for future follow-ups to occur every three years. Kristin Brown
6/12/2017 Institutional Control Periodic Reporting Received a letter verifying that land use conditions remain unchanged. Kristin Brown
11/20/2017 Meeting or Teleconference Held Attended a meeting regarding the elimination of non-essential infrastructure at Pump Station 10. There are five Alyeska sites located at this pump station that have institutional controls and this site is one of them. Construction is in the planning stages and will not begin until 2019. The foundations for the buildings on the pad will remain in place so the residual contamination that may remain underneath the foundations will remain in place. Because of this, the project is not planning on addressing the known contaminated site issues. Verifying this detail should be included in the next IC compliance review. Evonne Reese

Contaminant Information

Name Level Description Media Comments
DRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
GRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil

Control Type

Type Details
Other CS database notation and letter to landowner/RP (added during a QC check 4/11/2014).

Requirements

Description Details
Advance approval required to transport soil or groundwater off-site. Standard condition.
Excavation / Soil Movement Restrictions Soil containing residual contamination may not be placed in surface water or other environmentally sensitive areas.
Groundwater Use Restrictions Groundwater wells shall not be installed on this property without prior approval from ADEC.
Movement or use of contaminated material (including on site) in a manner that results in a violation of the water quality standards is prohibited (18 AAC 70) Standard condition.
Periodic Review Every three years.

Missing Location Data

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