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: Wildwood AFS Operations Building Facility Former Transformer Location

Site Name: Wildwood AFS Operations Building Facility Former Transformer Location
Address: 3.5 Mile North Kenai Road, Wildwood Drive, Kenai, AK 99611
File Number: 2320.38.051
Hazard ID: 25211
Status: Cleanup Complete
Staff: No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude: 60.607097
Longitude: -151.287226
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

A transformer was located atop a concrete pad at the west side of Building 101, the generator/maintenance building. The transformer and contaminated soil from a transformer oil spill were removed in 1990. The area of 1990 soil removal was 3 feet by 5 feet by 3 feet deep. The transformer enclosure was left in place at that time. Subsequent to the transformer removal, POL was reportedly released at the former transformer location The source and cause were unknown during the RI work, however the release may be associated with a UST that was found there during remedial action. During 1997, approximately 123 cubic yards of petroleum and low-level PCB-contaminated soil was excavated from the former transformer location. The work was conducted in three excavation phases, and was directed based on interim sampling results. A 500-gallon UST was also identified and removed during this work. Final excavation dimensions were 13 feet by 36 feet by 5 to 6 feet deep (depending on location). The excavation was backfilled with clean fill. Confirmation soil samples were collected from the excavation. DRO concentrations above the cleanup target remained in soil at the base of the excavation. DRO was detected at 16,300 mg/kg at 5 feet bgs in the base of the north area of the excavation. DRO was detected at 6,500 and 6,900 mg/kg at 6 feet bgs in the base of the south area of the excavation, beneath the location of the former UST. PCB concentrations in soil at the base of the northern area of the excavation ranged from ND to 0.88 mg/kg.Based on available information, contaminated soil exceeding the cleanup targets has been removed down to at or below the groundwater table.

Action Information

Action Date Action Description DEC Staff
4/18/1996 Site Added to Database (Date adjusted from 7/15/2008 for report/query consistency. (Reese)) John Halverson
4/18/1996 Proposed Plan The Corps finalized the proposed plan. Preferred alternatives included: Main Complex tank farm and USTs 5-1 and 5-2 - vapor extraction and air sparging; Maintenance Building, ACS MARS, Quonset Hut and Disposal Trench Area Burn Pit - soil excavation and off-site treatment followed by no further action; Operations Building - excavation and off-site treatment followed by natural attenuation and institutional controls; Landfill and Disposal Trenches - capping, natural attenuation (landfill area only) and institutional controls. John Halverson
6/3/1996 Update or Other Action Received a groundwater monitoring report for tank farm area from sampling in August 1995. It covered the main complex area tank farm and USTs (significant fuel contamination), ACS/MARS facility (low level DRO), Operations Building (DRO and low TEX), Landfill (low level VOCs) and Trench disposal areas (DRO and benzene at burn pit area). John Halverson
8/27/1996 Update or Other Action Received the December 1995 groundwater monitoring event report. The Operation Building area contained DRO up to 20 mg/l and low level TEX in GW. John Halverson
12/9/1997 Update or Other Action Received the groundwater monitoring report for sampling done in July 1997. Groundwater levels have dropped significantly, some MWs have gone dry. Operations Building (up to 6 mg/l DRO) in groundwater. John Halverson
5/15/1999 Update or Other Action Received groundwater monitoring report for sampling done in July 1998. Operations building (DRO low levels, need new wells in better locations). John Halverson
9/3/1999 Interim Removal Action Approved ADEC received "Remedial Action Report, Phase II Remediation" by Harding and Lawson/Wilder, dated August 25, 1999. The report documents cleanup work done between June 1997 and November 1998. Operations Building - transformer area and drum storage area have residual DRO contamination; transformer casing and concrete sent to landfill. John Halverson
9/3/1999 Update or Other Action ADEC received "Remedial Action Report, Phase II Remediation" by Harding and Lawson/Wilder, dated August 25, 1999. The report documents cleanup work done between June 1997 and November 1998. Operations Building - transformer area and drum storage area have residual DRO contamination, former AST/UST area has residual fuel contamination; transformer casing and concrete sent to landfill. John Halverson
2/24/2000 Site Ranked Using the AHRM Initially ranked as High Priority however, the actual AHRM scores comes up Low Priority. John Halverson
2/3/2005 Update or Other Action File number issued 2320.38.051 Aggie Blandford
6/2/2005 Site Characterization Workplan Approved A work plan for Site Characterization and Attenuation Monitoring was approved with minor comments. The work plan describes the planned investigation to delineate further the locations of remaining NAPL at the various source areas within the former Wildwood AFS using the Rapid Optical Screening Tool (ROST), Laser-Induced Fluorescence (LIF). It includes sampling and analysis to calibrate the results of the ROST LIF work and to further characterize contaminant nature and obtain data with which to evaluate the status of each source area using current Method II and III tools, and possibly a 4-phase partitioning model. Sampling and analysis will also obtain data with which to evaluate natural attenuation occurrence at each source area. Debra Caillouet
6/21/2005 Meeting or Teleconference Held Staff visited all of the Wildwood sites with the new project manager and the environmental engineer for the site. Staff also observed the ROST/LIF in operation. Debra Caillouet
6/15/2007 Update or Other Action The Declaration of Project Closure Decison for the CON/HTRW project at Wildwood was signed. Debra Caillouet
9/5/2007 Update or Other Action Staff reviewed and prepared comment on No DOD Action Indicated Report, Wildwood AFS, F10AK0251 HTRW Project 03, Draft July 07 The report summarizes the actions and data for twelve areas of concern at the former Wildwood Air Force station that are located at the High Frequency Facility, ACS MARS facility, Operations Building Facility, Rifle Range, Firing Range, Main Complex, and the Main Drum Storage Area. Comments on the draft document are being provided on the attached table. In general, DEC agrees with the conclusions to close these sites after the appropriate public comment period with the exception of the High Frequency Facility where the data supports a Conditional Closure. Debra Caillouet
9/5/2007 Site Characterization Report Approved The ROST/LIF Investigation, Former Wildwood Air Force Station, Revision 1, April 2007 Report was reviewed and approved. The report presents the results of the investigation at multiple areas within the former Wildwood AFS during the summer of 2005. The logs from the ROST/LIF are presented along with laboratory analysis results. The report provides valuable site characterization data to support future decisions and generally meets the requirements of 18 AAC 75.335 Site Characterization. Debra Caillouet
11/19/2007 Exposure Tracking Model Ranking Debra Caillouet
3/7/2008 Meeting or Teleconference Held Staff met with the USACE project manager and engineer to discuss comments on the draft proposed plan and incorporate them into the document. Debra Caillouet
9/24/2008 Site Added to Database A new site has been added to the database Mitzi Read
9/26/2008 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 78526 name: Former Transformer Location Debra Caillouet
11/16/2009 Site Characterization Workplan Approved Final Work Plan, Soil Assessment and Groundwater Monitoring of Non-Tank Farm Sites, Former Wildwood Air Force Station, Kenai, November 2009 will sample soil and groundwater at the site. Debra Caillouet
10/31/2011 Document, Report, or Work plan Review - other 2011 Annual Report, Groundwater Monitoring and Former Operations Building Facility Soil Assessment, Former Wildwood Air Force Station, The report adequately documents the results of the sampling and analysis that occurred during 2011 and is approved. The report documents the decommissioning of a monitoring well located near MW-16 that apparently had been abandoned without removal of the casing, The groundwater elevations have continued to lower and the DRO concentrations have risen at the Tank Farm. The soil sampled at the Operations Building showed no exceedances of the most stringent cleanup levels. Debra Caillouet
2/11/2019 Update or Other Action Evaluated site for closure; sent letter to ACOE on 2-11-2019 with site history and status. Joshua Barsis
2/12/2019 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 78526 Former Transformer Location. Joshua Barsis
2/22/2019 Cleanup Complete Determination Issued Based on the information provided to date, it has been determined that the contaminant concentrations remaining on site do not pose an unacceptable risk to human health or the environment and no further remedial action will be required unless new information becomes available that indicates residual contaminants may pose an unacceptable risk. Joshua Barsis

Contaminant Information

Name Level Description Media Comments
DRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil

Control Type

Type Details
No ICs Required

Requirements

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

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