Skip to content Skip to content

Alaska Department of Environmental Conservation

You are here: DEC / SPAR / CSP / SPAR Online Services / Contaminated Sites Search / Site Report

Site Report: Kenai Aviation Service

Site Name: Kenai Aviation Service
Address: 305 Willow StreetKenai Airport Terminal, Kenai, AK 99611
File Number: 2320.26.014
Hazard ID: 24575
Status: Cleanup Complete - Institutional Controls
Staff: IC Unit, 9074655229 dec.icunit@alaska.gov
Latitude: 60.564600
Longitude: -151.247700
Horizontal Datum:NAD83

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

During the investigation of a downgradient tank site, contaminated groundwater and soil was encountered that pointed to the jet fuel tanks at this facility. The tank system was used to supply jet fuel to aircraft and includes fueling ports on airport tarmac. After much political posturing between the City of Kenai and the department, a site assessment was completed. DRO contaminants exceeding cleanup levels were documented in the soil and groundwater. Groundwater monitoring initiated to determine status of contaminant plume. Surrounding area is served by municipal sewer and water.

Action Information

Action Date Action Description DEC Staff
2/20/1992 Document, Report, or Work plan Review - other Underground Storage Tank Removal Kenai Airport & Public Safety Building report received. This tank removal is for a downgradient site and indicates a potential problem at this facility. Monica English
9/21/1992 Document, Report, or Work plan Review - other 1992 Kenai Municipal Airport Underground Storage Tank Phase II Investigation report. Monica English
8/11/1993 Document, Report, or Work plan Review - other Phase I Drilling and Site Assessment report for a nearby site indicates contaminated soil and groundwater possibly attributed to the UST system at this facility. Monica English
8/24/1994 Update or Other Action Departmental staff meet with City Engineer to discuss tanks at this facility. Also discuss environmental information obtained for downgradient site points to contamination at this facility. Remind City of UST regulations for assessing potential release. City staff acknowledge that work would be dependent on City's budgetary constraints. Monica English
7/28/1995 Update or Other Action Departmental letter to City requesting that tanks at this facility be either upgraded or permanently closed in accordance with State's UST regulations. Monica English
8/22/1995 Update or Other Action Response letter from City staff indicating City's intent to pump tanks and to conduct a Phase I and Phase II Site Assessment. Monica English
10/20/1995 Update or Other Action Letter from City Manager informing department that the tanks have been pumped and that the City Council did not authorize any further action at this facility. Monica English
10/23/1995 Update or Other Action Article in local paper (Peninsula Clarion) stating that the "City Declines to Assess Possible Fuel Contamination" at this site. Monica English
12/1/1995 Update or Other Action Departmental letter to Mayor of Kenai outlining regulatory requirements for this facility and requesting tank decommissioning work plan. Monica English
12/28/1995 Update or Other Action Letter from City Manager informing department that the City has no money to proceed with work at this faciulity and that the City would pursue other funding options. Monica English
3/22/1996 Update or Other Action Departmental letter to City Manager, outlining regulatory requirements for this facility requesting tank decommissioning work plan. Included in this letter is an affirmation of the city's responsibility for site cleanup, and cost recover, if the Department would have to initiate cleanup. Monica English
4/2/1996 Update or Other Action Letter from City Manager informing department that the City has requested a $10,000 appropriation to fund a Phase I Investigation. Monica English
5/6/1996 Update or Other Action Departmental letter to City Manager informing the City that the tanks must also be decommissioned. Requested notification by the end of June whether the requested $10,000 funding is finalized. Monica English
10/23/1996 Update or Other Action Departmental letter to Mayor of Kenai briefly outlining history fo project and informing City of its responsibility in addressing the environmental issues at this facility. Monica English
11/15/1996 Update or Other Action Letter from Mayor of Kenai informing department that $10,000 funding is appropriated and htat city staff would begin reviewing assessment options. Monica English
1/22/1997 Update or Other Action Letter from city staff stating that a Request for Proposal for assessment work would be released in April/May 1997. Monica English
6/7/1997 Update or Other Action Departmental staff contact city staff to inquire about project status. City staff notifys department that no action is pending until the passage of the State's Contaminated Sites regulations. Monica English
9/8/1997 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 77617 Former Staff
9/8/1997 Site Added to Database Former Staff
11/20/1997 Update or Other Action ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: KENAI AVIATION SERVICES, INC. Former Staff
12/2/1997 Update or Other Action UST Removal Work plan received. Monica English
1/26/1998 Update or Other Action Departmental letter to City of Kenai providing comments to proposed work plan. Monica English
5/8/1998 Update or Other Action Monica English sent a letter requesting supplemental informatioan from an UST Removal Work Plan. Alyce Hughey
6/18/1998 Update or Other Action Letter from City responding to departments comments on proposed work plan. The City provides a Notice of intention to begin tank removal operations. The department did not grant final work plan approval to the City. Monica English
6/22/1998 Release Investigation Fuel tanks are removed at the airport. No monitor wells were drilled, no approved piping assessment completed, nothing is done with the soil stockpile and the extent of contamination was not determined. Monica English
8/4/1998 Update or Other Action Notice from department to City that the piping assessment proposal is inadequate and must be revised. Monica English
9/30/1998 Document, Report, or Work plan Review - other 1998 Underground Storage Tank Removal report received. This report was submitted by Kent & Sullivan on behalf of the City. Monica English
11/13/1998 Update or Other Action Departmental letter to City outlining current knowledge of site status and request for updates and remediation intentions. Monica English
5/20/1999 Update or Other Action Departmental letter to City requesting an update on site status and City's intentions for site cleanup. Monica English
6/10/1999 Update or Other Action City of Kenai letter to department stating that City has no intention of implementing a corrective action plan to address the remaining contamiated soil, piping closure and contaminated groundwater assessment. These actions are required under authority of 18 AAC 78. Monica English
8/5/1999 Update or Other Action Meeting between City of Kenai staff, City's consultant and departmental staff to discuss and plan environmental options for this facility. Monica English
10/11/1999 Leaking Underground Storage Tank Cleanup Initiated - Petroleum During site investigation of UST system contaminated soils excavated and stockpiled and city maintenance shop. Former Staff
3/7/2000 Document, Report, or Work plan Review - other Department receives a 1999 Site Investigation Report from American Environmental. The investigation involved drilling two new monitor wells and adding three hydropunch borings to assess fill ports on runway tarmac. Monica English
10/5/2000 Update or Other Action Departmental letter to City providing comments on the 1999 Site Investigation report. Department also requests a Corrective Action Plan be submitted for long term groundwater monitoring, landspreading of contaminated soil and remdiation proposals for in-situ contaminated soil that exceeds cleanup levels. Monica English
7/16/2001 Update or Other Action City submits a Corrective Action Plan titled: 2001 UST Site Activities Work Plan. Monica English
7/17/2001 Update or Other Action Departmental letter to City requesting changes to the proposed work plan. Monica English
7/18/2001 Underground Storage Tank Site Characterization or Assessment Additional contaminated soil excavated from former UST site. Report submitted by American Environmental. Monica English
3/15/2002 Document, Report, or Work plan Review - other The "2001 UST Soil Excavation Report" was received from American Environmental. This report covers assessment work conducted during the summer of 2001. Monica English
4/2/2002 Update or Other Action Departmental letter providing review comments for the 2001 UST Soil Excavation Report. Monica English
6/4/2002 Update or Other Action Departmental letter requesting a Corrective Action Plan for unresolved environmental issues. Monica English
6/21/2002 Update or Other Action Meeting with consultant (American Environmental) to discuss information needed that wasn't provided in 2001 UST Soil Excavation report. Monica English
9/18/2002 Update or Other Action Monica English sent a letter with review comments on the project status and request for Corrective Action Planafter reviewing the Response to ADEC Letter April 2, 2002 from American Environmental dated July 14, 2002. Alyce Hughey
4/16/2003 Long Term Monitoring Established The "2002 UST Annual Monitoring Well Sampling Report" was received. This is second round of groundwater sampling, no clear trend established. Monica English
5/14/2004 Update or Other Action City submits a request for alternate cleanup levels. Wants to apply the "10X" rule at the site. Only two groundwater monitoring events conducted. Last round in 2002. Monica English
8/12/2004 Update or Other Action ADEC letter to City requesting most recent Groundwater monitoring data and inquiring about stockpiled contaminated soils generated during tank removal. Monica English
9/8/2004 Update or Other Action File number assigned and entered into the Fileroom DB and LUST DB. Alyce Hughey
12/8/2004 Update or Other Action ADEC approval for a soil landspreading request. Monica English
12/29/2004 Institutional Control Record Established Contaminated soils exceeding established cleanup levels for DRO and benzene remains in the former tank excavation and at the fuel ports on the airport tarmac. Any future excavation activities in these areas will require qualified third party oversight. Monica English
12/29/2004 Conditional Closure Approved A No Further Remedial Action Planned determination was made for this facility. Long term groundwater monitoring is required to be conducted until levels consistently meet the cleanup levels. A treatment/disposal plan for a stockpile (~100 cubic yards) of contaminated soil is required to be submitted for review and approval. Monica English
10/17/2005 Update or Other Action Monica English sent another approval letter ro landspread the 200 cubic yeards of contaminated soil after receiving the soil spreading report from American Environmental dated Oct 11, 2005 that reported that the wrong soils were inadvertently landspread without departmental approval. Alyce Hughey
2/21/2006 Update or Other Action Using Figure 2 from the 20204 UST Annual Monitoring Well Sampling Report, from American Environmental, dated November 11, 2004, in conjunction with TopoZone Pro and the KPB Parcel Lookup, entered the coordinates for this site. Metadata includes No Topo Basemap, TopoZone Pro Street Maps, Black and White Aerial Photo, on a Medium Size Map, View Scale 1:10,000, Coordinate Datum NAD83. High degree of confidence in accuracy of location. Alyce Hughey
10/9/2006 Update or Other Action Project manager changed from Monica English to Don Fritz, per Paul Horwath. Alyce Hughey
2/9/2007 Exposure Tracking Model Ranking Baseline ranking completed Don Fritz
2/15/2007 Update or Other Action Staff reviewed the 2006 UST Monitoring Well Sampling Report prepared by Peter Campbell (American Environmental) and provided review comments. Don Fritz
4/3/2009 Document, Report, or Work plan Review - other Reviewed the 2008 UST Monitoring Well Sampling Report, dated March 2009, from American Environmental, for Paul Horwath. The groundwater samples taken during the 2008 monitoring event, detected a slight increase in hydrocarbon concentrations in four of the five monitoring wells tested. The monitoring well located approximately 10 feet down gradient from the former airport UST excavation had hydrocarbon odor in the purged water, and the sample taken had a full spectrum of BTEX, GRO, and DRO present in the sample taken. Only DRO was above the groundwater cleanup levels from the well, and the DRO concentrations were below the last monitoring event performed in 2006. The next groundwater monitoring will be performed in 2010 according to the December 29, 2004 ADEC letter 2004 UST Alternate Cleanup Levels Request – No Further Remedial Action Planned Determination. Alyce Hughey
7/14/2011 Offsite Soil or Groundwater Disposal Approved Reviewed the July 11, 2011 Request for Water Disposal prepared and submitted by American Environmental, and approved for the disposal of approximately one gallon of purged groundwater into the City's sanitary sewer system for treatment in the waste water treatment plant. Paul Horwath
9/9/2011 Document, Report, or Work plan Review - other Reviewed the 2011 UST Monitoring Well Sampling Report, dated August 2011, from American Environmental. The groundwater samples taken during the 2011 monitoring event showed non-detectable concentrations in four of the five monitoring wells. The fifth monitoring well has remained at concentrations ranging from 1.56 to 6.57 mg/L DRO for the past four sampling events. Two of the monitoring wells (MW-2 and MW-5) were tested for RRO as a substitution for EDB to determine if the wells had been impacted from the construction of the new tarmac in 2010. Analytical results did not detect RRO in either well tested. Monitoring well MW-3, the monitoring well located approximately 10 feet down gradient from the former airport UST excavation, detected DRO at 2.61 mg/L. All the other monitoring wells did not detect hydrocarbon concentrations above the groundwater cleanup levels. The next groundwater monitoring will be performed in 2013 according to the December 29, 2004 ADEC letter 2004 UST Alternate Cleanup Levels Request – No Further Remedial Action Planned Determination. Alyce Hughey
11/15/2011 Long Term Monitoring Complete Based on groundwater quality data collected and reported over the past ten years, groundwater concentrations have remained stable in the DRO range. Long term monitoring of groundwater is no longer required. Contaminated soils exceeding established cleanup levels for DRO and benzene remains in the former tank excavation and at the fuel ports on the airport tarmac. Any future excavation activities in these areas will require qualified third party oversight. Paul Horwath
11/15/2011 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 77617 Kenai Aviation tank site. Paul Horwath
11/10/2014 Update or Other Action Staff changed from Paul Horwath to IC Unit. Kristin Thompson
8/18/2015 Institutional Control Compliance Review IC compliance review conducted. The groundwater monitoring requirements were removed in the Closure/IC Details section according to the November 15, 2011 long term monitoring removed. Send an IC reminder letter to the responsible party/landowner. Evonne Reese
8/20/2015 Institutional Control Update An IC reminder letter was issued to the responsible party on this date. Kristin Thompson
8/7/2024 Institutional Control Compliance Review IC compliance review completed on this date. An IC reminder letter was e-mailed to the landowner. The next review will be in five years’ time. Gaige Robinson

Contaminant Information

Name Level Description Media Comments
DRO > Table C Groundwater
DRO 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.
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.
Excavation / Soil Movement Restrictions Contaminated soils exceeding established cleanup levels for DRO and benzene remains in the former tank excavation and at the fuel ports on the airport tarmac. Any future excavation activities in these areas will require qualified third party oversight.
Periodic Review Every five years.

No associated sites were found.

Missing Location Data

Because the GIS location data for this site has not been entered, we cannot direct you to its position on the map. Click "Continue" to proceed to the Contaminated Sites Web Map or "Close" to return to the site report.
Continue     Close

Public Notices  •  Regulations  •  Statutes
Press Releases  •  Contact

 

State of Alaska Department of Environmental Conservation

P.O. Box 111800
Juneau, AK 99811-1800
Phone: 907-465-5066
Fax: 907-465-5245
TDD: 800-770-8973
Physical Location: 410 Willoughby