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Site Report: ADOT&PF Deadhorse Airport Block 304 Lot 1B


Site Name: ADOT&PF Deadhorse Airport Block 304 Lot 1B
Address: Deadhorse Drive, Deadhorse Airport Lot 1B Block 304, Deadhorse, AK 99734
File Number: 300.38.287
Hazard ID: 25471
Status: Active
Staff: Joshua Barsis, 9072697691 joshua.barsis@alaska.gov
Latitude: 70.199971
Longitude: -148.459126
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 8/24/2009, ADOT&PF staff discovered diesel contamination during installation of a culvert in a gravel driveway on Lot 1B, Block 304 Deadhorse Airport. A tanker trailer used as a fueling station was observed directly adjacent to where the contaminated soil was found. When notified, Carlile immediately had the trailer towed to Fairbanks and secured on their lot. ADOT&PF treated the contaminated water and soil that were removed during the culvert installation.

Action Information

Action Date Action Description DEC Staff
10/14/2009 Report or Workplan Review - Other Date on document prepared by Tutka for Carlile entitled Deadhorse Operations Yard Fuel Investigation - Soil Sampling (see action below regarding phone conversation regarding this report). No sheen was observed other than on the soil surface (stain) and five soil samples were collected. Four samples were analyzed for DRO and four for BTEX. Only the most shallow sample had contamination above any applicable cleanup level. Chromatographic patterns were also compared between a fuel standard, fuel from the truck and the soil samples. Keather McLoone
12/8/2009 Site Added to Database Site Added to Database Mitzi Read
12/30/2009 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 78834 name: Driveway Excavation - Petroleum Mitzi Read
1/14/2010 Update or Other Action Phone discussion with Lisa from Carlile. Lisa forwarded a report containing chromatograms from analyses of fuel from the tanker truck (suspected source area) and the soil in the vicinity of the tanker truck. A preliminary review indicates the fuel in the truck was diesel and the fuel in the soil was weathered diesel. Carlile also has a report from Phase II sampling conducted in the late 1990's that they will be forwarding to ADEC for review in the near future. Bill O'Connell
1/14/2010 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 78834 Leaky fuel truck. Bill O'Connell
3/24/2010 Meeting or Teleconference Held Meeting with representatives from Carlile trucking and their consultant. Based on samples collected following the discovery of contamination near the tank truck, it does not appear that the tanker was the source of contamination found during installation of the culvert. Rather contamination at this site is likely due to historic release, or possible undelineated contamination from the nearby MarkAir Deadhorse site, which formerly had a fuel storage area adjacent to the culvert. Bill O'Connell
3/22/2012 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 78834 Unknown. Bill O'Connell
10/1/2014 Update or Other Action The contaminated sites program (CSP) completed its review of this site. Diesel contamination was discovered during a culvert installation in 2009. During this time, one soil sample was collected by ADEC from the contamination and exhibited a concentration of DRO at 750,000 mg/kg. Although the source of contamination was originally thought to be from a tanker truck utilized as a fueling station, it was later determined not to be the case. Samples were collected from beneath the tanker from an area that would have been a source, and did not exhibit concentrations of contaminants in the subsurface. It is possible that contamination is stemming from an adjacent property, through the connected culverts. The contamination needs to be delineated horizontally and vertically. Joshua Barsis
7/10/2015 Report or Workplan Review - Other Reviewed the Phase II Environmental Site Assessment Report, dated June 22, 2015. Seven analytical soil samples were collected from six test pits advanced on Lots 2A and 2C in June 2015. The main goal of this effort was to verify the presence or absence of contamination from onsite and offsite sources; mainly the potential for contamination migrating from the ADOT&PF Deadhorse Airport Lot 1B Block 304 site. Results of the investigation revealed that contamination was present in the surface and subsurface soils on Lot 2C, located along the western boundary and adjacent to Lot 1B. However, all soil sample results were below ADECs most stringent cleanup levels. Contamination was also identified in Sample L2A2, which was collected from a test pit advanced on Lot 2A, in the vicinity of a former above ground storage tank (AST) removed in 2009. Diesel range organics (DRO) was identified in Sample L2A2 at 1,540 mg/kg, which exceeds ADEC cleanup levels. The extent of this contamination has not been fully delineated. See file number 300.38.318 for full text report. Joshua Barsis
11/4/2016 Update or Other Action Letter sent on this day with a brief site history and tooutline existing data gaps that need to be addressed before this site can be considered for closure. Joshua Barsis

Contaminant Information

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