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Site Report: ADOT&PF SREB - Koyukuk

Site Name: ADOT&PF SREB - Koyukuk
Address: Koyukuk Airport, Koyukuk, AK 99754
File Number: 830.38.004
Hazard ID: 4349
Status: Cleanup Complete
Staff: ,
Latitude: 64.877180
Longitude: -157.713320
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.


A 10/20/05 Site Characterization and Cleanup Operation Report described petroleum-contaminated soils located inside the former Snow Removal Equipment Building (SREB) from various small releases during routine operations.

Action Information

Action Date Action Description DEC Staff
10/20/2005 Site Characterization Report Approved On this date, ADEC received a Site Characterization and Cleanup Operation Report for Koyukuk Airport SREB, dated October 20, 2005, and submitted by Oasis. The site has a history of various petroleum spills and leaks in the SREB. Six petroleum impacted areas were located and field screened. Four areas based off field screening, were analyzed for BTEX, DRO, GRO, & RRO. Samples were collected from the surface soil, from 4 to 6 inches bgs, contained DRO up to 5,100 mg/kg, and RRO up to 20,000 mg/kg . The surface soil was then removed down to 1 foot bgs and up to 4 ft. bgs on the north side of the building and stockpiled. Three confirmation samples, collected inside the SREB, based off field screening, collected 4 to 6 inches bgs, was ND for DRO and RRO( note: BTEX and GRO were not analyzed). The approximately 75 cubic yards stockpiled soil was moved to the airport apron, approximately 100 ft. south of the SREB and was later reportedly used as a sub-base layer for construction of a new runway in October of 2005. Four stockpile samples, collected 18 inches into the pile, contained DRO up to 1,200 mg/kg (note: BTEX and GRO were not analyzed). Grant Lidren
2/7/2007 Site Added to Database Site added to the database. Mitzi Read
2/8/2007 Exposure Tracking Model Ranking Baseline ranking completed. Mitzi Read
6/10/2009 Cleanup Complete Determination Issued The Alaska Department of Environmental Conservation (ADEC), Contaminated Sites Program, has completed review of the environmental records associated with the ADOT&PF SREB - Koyukuk. Based on the information provided to date, the ADEC has determined that the contaminant concentrations remaining on site do not pose an unacceptable risk to human health or the environment, and this site is closed. Grant Lidren

Contaminant Information

Name Level Description Media Comments
DRO < Method 2 Most Stringent Soil
RRO < Method 2 Most Stringent Soil

Control Type

Type Details
No ICs Required


Description Details
Advance approval required to transport soil or groundwater off-site.

Missing Location Data

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