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Site Report: ADOT&PF Homer Maintenance Station AST

Site Name: ADOT&PF Homer Maintenance Station AST
Address: 3450 Sterling Highway; MP 68.9 Sterling Highway, Homer, AK 99603
File Number: 2314.38.039
Hazard ID: 26727
Status: Active
Staff: Kris Dent, 9072623411 kris.dent@alaska.gov
Latitude: 59.659360
Longitude: -151.642433
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 July, 2016, during excavation and construction work to install a storm water retention pond, lift station, and approximately 280 feet of arctic pipe buried at a depth of 3 to 4 feet below ground surface, field sampling and screening of the excavation work by a qualified environmental professional identified petroleum-contaminated soil along the piping trench. Very high photoionization detector field screening values indicate the petroleum product is likely gasoline. Approximately 60 cubic yards of contaminated soil were stockpiled and later shipped out of State to an approved landfill on the west coast of the United States. ADEC believes the contamination is a consequence of a gasoline release which occurred at the facility after the prior release investigation work was completed in association with the former regulated underground storage tank (UST) systems at this facility. The contamination from the former UST facility is entered in this database under ADEC Hazard ID# 24664. The closest source of gasoline stored at the facility since the USTs were removed is an above ground fuel storage tank (AST) system. The AST fuel system is the likely source of the gasoline-contaminated soil.

Action Information

Action Date Action Description DEC Staff
7/12/2016 Document, Report, or Work plan Review - other Restoration Science & Engineering, LLC, provided ADEC with e-mail notification that petroleum contaminated soil was encountered during trenching for installation of a nondomestic wastewater disposal system piping at the Homer ADOT&PF Maintenance facility. Paul Horwath
8/2/2016 Document, Report, or Work plan Review - other RS&E's August 2, 2016 Field Screening Activities Report was received by ADEC's Grant Lidren, and forwarded to Paul Horwath on June 14, 2017. Paul Horwath
6/14/2017 Offsite Soil or Groundwater Disposal Approved ADEC's Grant Lidren issued ADEC authorization for the offsite transport and disposal of an estimated 60 cubic yards of petroleum contaminated soil, to Columbia Ridge Landfill in Arlington, Oregon. Paul Horwath
6/21/2017 Site Added to Database A new site has been added to the database Mitzi Read
6/22/2017 Potentially Responsible Party/State Interest Letter ADEC issued a PRP / Notification of Liability letter to the ADOT&PF. Paul Horwath
6/23/2017 Workplan Requested ADEC issued a letter to ADOT&PF requiring the submittal of a Site Characterization Work Plan in order to identify the extent and magnitude of petroleum contamination at the facility, in accordance with 18 AAC 75.335. Paul Horwath
6/26/2017 Update or Other Action Notify and refer this "site" to ADEC's drinking water program, to inform them of potential risk to the public water supply for this facility, and in order to identify the source(s) of water supplied to the facility for drinking and other potable purposes. Paul Horwath
6/27/2017 Document, Report, or Work plan Review - other Received a report covering the last sampling of the facility drinking water well (2015). No contaminants were identified in the water well, which was tested by 8260C and 8270D. The well is defined as a private well based on the 2017 amended ADEC Drinking Water Regulations. So there is no longer any ADEC DW Public Drinking Water System/Program oversight. The well is regulated no different that a private residential water supply well based on current ADEC DW Regulations. Paul Horwath
6/29/2017 Update or Other Action Obtain electronic reports from Jennifer Micolichek (ADOT&PF). Save to electronic file. Receive confirmation that the asphalt pavement was placed at the facility in the fall of 2014. Contaminated soil is beneath asphalt. Release occurred prior to fall of 2014. Paul Horwath
12/20/2019 Update or Other Action At this time there is no available funding for remediation or work at the site per email with Erik Norberg. DOT&PF has not submitted a work plan for this site. Jessica Hall
10/14/2020 Update or Other Action At this time there is no available funding for remediation or work at the site. DOT&PF has not submitted a work plan for this site. Jessica Hall
5/7/2021 Update or Other Action Per the RP, as of now, DOT&PF has no plans to evaluate the Homer facility. Jessica Hall
5/17/2024 Document, Report, or Work plan Review - other DEC approved the work plan "DOT&PF Homer Maintenance Station AST 2024 Site Characterization Workplan", dated May 5, 2024. The work described is to characterize the remaining hydrocarbon-impacted soil and groundwater in the vicinity of an aboveground storage tank (AST). Kris Dent
5/31/2024 Document, Report, or Work plan Review - other Had a phone discussion with QEP regarding the work plan, timeline of work, and existing wells. Also discussed previous contamination in the monitoring wells and if free product is encountered during 2024 work. Kris Dent
5/1/2025 Site Characterization Report Approved Report Approval for the DOT&PF Homer Maintenance Station AST/UST 2024 Site Characterization Report dated April 10, 2025. This report describes the field work conducted in July 2024 at the DOT&PF Homer Maintenance Station in Homer. The objectives were to delineate the vertical and horizontal extent of the contaminated soil and groundwater associated with the current aboveground storage tank (AST) and the former underground storage tank (UST). Three soil borings were completed as monitoring wells to sample soil and groundwater. Soil samples collected from Boring 16 had an exceedance of naphthalene above DEC migration to groundwater cleanup levels (CULs). Soil samples collected from Boring 17 had concentrations of gasoline range organics (GROs), volatile organic compounds (VOCs), and polynuclear aromatic hydrocarbons (PAHs) in exceedance of CULs. Boring 18 also had detections of PAHs above CULs. Soil samples were collected based on sampling intervals and the highest field-screening results. Soil samples were collected down to the groundwater interface at approximately 29-35 feet below ground surface (BGS); however, a low recharge rate in the monitoring wells made groundwater sampling difficult or impossible. DEC requests resampling of the existing wells during higher groundwater conditions, if possible, to verify that contamination is not reaching the groundwater at the site. Kris Dent
9/19/2025 Document, Report, or Work plan Review - other Work plan approved for groundwater sampling. Kris Dent

Contaminant Information

Name Level Description Media Comments

Control Type

Type Details

Requirements

Description Details
Hazard ID Site Name File Number
24664 ADOT&PF Homer Facility 2314.26.002
26545 ADOT&PF Homer Maintenance Station Class V Injection Well 2314.38.037
23744 ADOT&PF Homer Maintenance Shop (OWS) 2314.26.003

Missing Location Data

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State of Alaska Department of Environmental Conservation

P.O. Box 111800
Juneau, AK 99811-1800
Phone: 907-465-5066
Fax: 907-465-5245
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