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Site Report: AFSC AIA Kilo Gates Hydrant System

Site Name: AFSC AIA Kilo Gates Hydrant System
Address: Kilo Gates; Ted Stevens International Airport, Anchorage, AK 99519
File Number: 2100.38.028.34
Hazard ID: 25860
Status: Active
Staff: Wendy Hansen, 9072693059
Latitude: 61.172548
Longitude: -149.948068
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.


In 2011, Aircraft Services International Group (ASIG) assessed the potential for contamination in the area of the former Anchorage Fueling and Service Company (AFSC) fuel pipeline, on the airside portion of the property, to determine a presence or absence of contamination in the area of the fuel pipeline and potential future building footprint areas. Analytical and observation results for the site monitoring event indicate the presence of hydrocarbon consitutents at elevated concentrations in the area of the fuel pipeline and the proposed Guardian Flight building footprint. In additional to jet fuel, heaver petroleum hydrocarbons (i.e. residual range organics) were noted near pits 1-6, 12, and the Guardian Flight building footprint. Depth to groundwater was determined to be approximately 14 feet below ground surface and initial results suggest it is impacted from past fuel spills. Petroleum contamination is likely due to jet fuel spills from AFSC fuel pipelines or hydrant systems. This site is slated to be utilized by Guardian Flight Services and TransNorthern Aviation to store, maintain, and operate their aircraft buisness. Nearest water body is Lake Hood/Spenard, approximately 0.2 mile north of the site.

Action Information

Action Date Action Description DEC Staff
3/27/2012 Site Added to Database A new site has been added to the database Mitzi Read
3/27/2012 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 79276 name: AFSC Kilo Gates Hydrant System Mitzi Read
3/28/2012 Potentially Responsible Party/State Interest Letter DEC staff issued a potential responsible party letter to Amber Deem on March 28, 2012. Todd Blessing
10/22/2012 Update or Other Action DEC staff approved of Transnorthern's request to construct a building with a 6 mil vapor barrier. Staff inspected site and evaluated photo's of the vapor barrier. Todd Blessing
1/24/2013 Update or Other Action DEC staff reviewed and approved of URS work plan titled "Additional Forensic Sampling AFSC Kilo Gates Hydrant System/Former Plant 4". URS proposed to conduct additional forensic soil sampling analysis to suppliment forensic samples collected in 2011. Up to 10 soil borings will be installed near the abandoned pipeline. Samples will be collected based on field screening and analyzed for Soil samples will be submitted to the laboratory for Gasoline Range Organics (GRO), Extractible Petroleum Hydrocarbons (EPH) to include C11-C22 aromatic hydrocarbons, and Poly Aromatic Hydrocarbon (PAH) analyses. Samples will be analyzed using Ultra Violet Fluorescence (UVF) technology, similar to the Ultra Violet Optical Screening Tool (UVOST) system use during the initial investigation at the Kilo Gates site in 2011. These samples will be compared to a raw fuel sample to determine whether the currently used fuel is a potential source for contamination in that area. The samples will also be used to compare to the full forensic analytical samples collected from each boring. Samples will be analyzed by UVF-3100D and TD-500 analyzers, by Site-Lab of Newbury, Massachusetts Todd Blessing
9/25/2013 Site Visit ADEC staff conducted a site visit to observe the current land use and become familiar with the site. Meghan Dooley
1/6/2017 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 79276 AFSC Kilo Gates Hydrant System. Darren Mulkey
1/6/2017 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 79276 AFSC Kilo Gates Hydrant System. Darren Mulkey
7/25/2017 Meeting or Teleconference Held DEC Staff met with ASIG and consultant AECOM to discuss status of site and path forward. A letter dated September 22, 2017 documents the meeting and subsequent communications. In 2011 and 2012, petroleum contamination was identified in the vicinity of an AFSC fuel pipeline during pre-construction assessment activities associated with the Guardian Flight building. Forensic analyses performed in 2013 confirmed the presence of Jet A. Reports relevant to the site discovery were provided to ASIG and AECOM on July 28, 2017. A work plan was requested to determine the nature and extent of contamination, to include analysis for GRO, DRO, VOCs (including BTEX), and PAHs. Wendy Hansen

Contaminant Information

Name Level Description Media Comments

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Description Details

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Missing Location Data

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