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Site Report: Kenai Peninsula Borough Homer Maintenance Shop

Site Name: Kenai Peninsula Borough Homer Maintenance Shop
Address: 638 East Pioneer Avenueand Lake Street, Homer, AK 99603
File Number: 2314.26.019
Hazard ID: 23217
Status: Cleanup Complete
Staff: No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude: 59.649400
Longitude: -151.528500
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

Two UST's removed in 1990 (Regulated Gas and Diesel Tanks) and two more in 1992 (One Heating Oil Tank, Contaminated soils below cleanup levels and One Waste Oil Tank, Contaminated soils were above cleanup levels.) Surficial soil and groundwater contamination onsite. GW Monitoring program in progress. Elevated levels of BTEX and GRO in GW still, mentioned in 1998 Monitoring Rpt. 164 yards of contaminated soil was thermally remediated in 7/99.

Action Information

Action Date Action Description DEC Staff
12/30/1992 Site Added to Database Former Staff
12/30/1992 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 77767 ADD; Former Staff
12/31/1992 Underground Storage Tank Site Characterization or Assessment Paul Horwath
12/31/1992 Leaking Underground Storage Tank Cleanup Initiated - Petroleum LCAU; During the removal of an UST system, contaminated soils were encountered. Soil borings were advanced to determine the extent and levels of contaminatiuon. A phase 2 site assessment is scheduled during the spring of 1996. : LCAU date changed DB conversion Former Staff
3/3/1994 Leaking Underground Storage Tank Corrective Action Underway LCAR; A LUST corrective action report was reviewed by DEC staff and comments were provided to the RP. Former Staff
3/4/1994 Update or Other Action Monica English sent a letter requesting information on the locations of all the soils treated at the Clean Soils Facility in Kenai. Alyce Hughey
11/17/1994 Leaking Underground Storage Tank Corrective Action Underway LCAR; Additional information was provided to the department regarding corrective actions taken for the remediation of contamination resulting from a UST closure. The Borough requested closure for this site. Closure of this site cannot occur until all issues regarding post-treatment sampling of the contaminated soils is resolved. A letter stating this was sent to the Borough. Former Staff
6/6/1995 Update or Other Action CAPR; Departmental staff reviewed a corrective action plan for contamination from a former UST system at this site. Former Staff
1/31/1996 Leaking Underground Storage Tank Corrective Action Underway LCAR; Departmental staff reviewed a corrective action report for activities associated with the removal of 2 regulated USTs. Both the soils and GW at this site have been impacted with petroleum hydrocarbons from the UST systems. A corrective action plan will be submitted to address the contamination. Former Staff
2/5/1996 Release Investigation SA2A; Departmental staff reviewed and approved a Phase II Site Assessment Plan for further defining contaminated soil and GW resulting from 2 USTs at this site. Former Staff
6/16/1996 Long Term Monitoring Established Paul Horwath
3/11/1997 Update or Other Action Monica English sent a letter commenting on the Additional Site Investigation Report and meeting on March 5, 1997. Alyce Hughey
11/20/1997 Update or Other Action ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: KENAI PENINSULA BOROUGH Former Staff
11/26/1997 Update or Other Action Sent fax and said CR Letter sent in error. Misunderstood letter. Will call back. They are remediating site; Catherine Mayer; 907-262-4441 Former Staff
6/17/1999 Update or Other Action Don Seagren sent an approval letter to transport and thermal treat 164 cubic yards of contaminated soil at Soil Processing Inc., in Soldotna. Alyce Hughey
7/26/1999 Update or Other Action Don Seagren sent an approval letter to transport the treated soils at Soil Processing Inc., to the Soldotna landfill to be used as cover material. Alyce Hughey
11/22/1999 Update or Other Action Colin Bayse sent a letter with questions regarding the treated contaminated soils. Alyce Hughey
7/10/2000 Update or Other Action Colin Bayse sent a letter of response after reviewing AGRA Earth & Environmentals response to Colin's questions in his 11-22-99 letter. The letter addresses those responses and the ones that are still inadequate. Alyce Hughey
8/21/2000 Update or Other Action Colin Bayse sent a follow up letter to Kenai Peninsula Borough after attending a meeting on July 10, 2000. Alyce Hughey
12/11/2002 Update or Other Action Monica English sent a letter requesting a Project Status Update and to inform them that she was the new project manager. Alyce Hughey
9/14/2004 Update or Other Action File number assigned and entered into the Fileroom DB and LUST DB. Alyce Hughey
1/3/2005 Update or Other Action Staff began review of previous environmental activities associated with several underground storage tank systems previously located at this facility (in preparation to meeting with borough's environmental compliance manager). Monica English
1/4/2005 Update or Other Action Staff meets with the Environmental Compliance manager to discuss outstanding environmental issues associated with several former underground storage tank systems at this facility. The borough will sample the existing monitor wells to obtain current groundwater quality at the site and determine if additional cleanup activities are warranted. Monica English
9/8/2005 Update or Other Action A ground water monitoring plan is received and reviewed. Three monitor wells will be sampled to determine if a contaminant trend can be established. Previous groundwater sampling has documented benzene, and GRO contaminants above the GCL. Monica English
12/7/2005 Update or Other Action Monica English sent a review comments letter after reviewing the 2005 Groundwater Monitoring Report. Alyce Hughey
1/3/2006 Update or Other Action Monica English sent an approval letter approving a 2005 waiver to utilize the Borough's Environmental Compliance Manager to conduct groundwater monitoring activities. Alyce Hughey
3/20/2006 Update or Other Action Using the Vicinity Map and the Site Map from a Site Assessment Report Waste Oil Tank Removal KPB Homer Maintenance Shop, from Rozak Engineering, dated December 29, 1992, 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
2/7/2007 Update or Other Action Sent letter to RP to identified change in project managers for ADEC, request an update on site activities. Don Fritz
3/22/2007 Exposure Tracking Model Ranking Initial Site Ranking using the ETM Don Fritz
9/21/2009 Meeting or Teleconference Held Phone call with with David Gottschalk (KPB) regarding sheening encountered on groundwater, and the need for additional assessment. David will contact a contractor to have further assessment evaluated, and groundwater sampling conducted. Don Fritz
9/30/2009 Site Characterization Workplan Approved Don Dougherty (EMI) submitted a work plan on 9/29 for assessment activities in association with sheening discovered at the site in August. Phone conversation with Don who was at the site implementing the plan. Not finding any sheening downgradient of initial hole, but odors of aged fuel. Don believes that we have a good downgradient monitoring well, all wellswill be sampled to depict current groundwater conditions. Don Fritz
10/12/2009 Update or Other Action Staff approved the transport of approximately 15 tons of impacted soil to ASR for thermal remediation. Don Fritz
10/22/2009 Update or Other Action Staff approved ASR request to comingle soils transported to ASR from this project. Don Fritz
7/1/2011 Site Characterization Report Approved Paul Horwath
7/18/2011 Cleanup Plan Approved Paul Horwath
7/26/2011 Document, Report, or Work plan Review - other Reviewed the Limited Sampling / Assessment Report, dated October 2009, from Environmental Management Incorporated. On August 12, 2009 during the installation of a new gate into the maintenance facility an area of contaminated soil was encountered at approximately 4 feet below ground surface. On September 30, 2009 approximately 6.5 cubic yards (a total of 15.72 tons) of contaminated soil was excavated from two areas near the entrance to the fenced facility and transported to Alaska Soil Recycling for thermal remediation and disposal. Confirmation soil samples detected 1,130 and 1,870 mg/kg DRO at 5 feet bgs at the bottom of the two excavations. Three monitoring wells were sampled with 0.130 mg/L benzene and 2.26 mg/L DRO being detected in two of the monitoring wells sampled. Alyce Hughey
7/26/2011 Final Cleanup Report Reviewed Alyce Hughey
7/26/2011 Offsite Soil or Groundwater Disposal Approved Approved approximatley 7 cubic yards of soil for offsite disposal at ASR. Paul Horwath
11/16/2011 Update or Other Action Site transferred from Don Fritz to Peter Campbell per Paul Horwath. Alyce Hughey
11/23/2011 Long Term Monitoring Complete The four groundwater monitoring wells on the property associated with this project must now be properly decommissioned in accordance with ADEC’s February 2009 Monitoring Well Guidance. The Kenai Peninsula Borough must prepare and provide ADEC with a work plan which identifies proposed decommissioning procedures for ADEC review and approval prior to implementation of those procedures. The decommissioning of these monitoring wells should occur before July 30, 2012, and must be documented in a written report submitted to ADEC by October 31, 2012. This work must be performed or directly supervised by a ‘qualified person’, as defined in 18 AAC 78.995(118), and the report must be signed by a qualified person. Peter Campbell
11/23/2011 Cleanup Complete Determination Issued Based on the most recent soil and groundwater samples collected at this site, soil and groundwater contamination remains on site above established default cleanup levels. However, ADEC has determined that this site does not pose an unacceptable risk to human health or the environment, subject to the below stipulated conditions. Therefore, we are issuing this ‘Corrective Action Complete’ decision, subject to the following conditions: Peter Campbell
6/28/2012 Document, Report, or Work plan Review - other Approval issued to decommission the four remaining groundwater monitoring wells according to the Homer Maintenance Shop Monitoring Well Decommissioning 2012, dated June 27, 2012 with the condition that a report be submitted following the decommissioning work. Peter Campbell
8/13/2012 Document, Report, or Work plan Review - other Reviewed the Notification of Monitoring Well Decommissioning at Homer Maintenance Shop, dated August 2, 2012, and prepared by Kenai Peninsula Borough. On July 2, 2012 the four existing monitoring wells MW-5, MW-6, MW-7, and MW-8 were decommissioned by Discovery Drilling. All four monitoring wells had threaded bottom caps, which prevented the driller from knocking out the bottom. The entire well casings and screens were therefore pulled. The holes remained open and the driller filled the remaining voids with Bentonite chips from the bottom of the well to approximately 2-feet below ground surface and the top two feet were filled with pea gravel. Alyce Hughey

Contaminant Information

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

Control Type

Type Details
No ICs Required

Requirements

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

No associated sites were found.

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
TDD: 800-770-8973
Physical Location: 410 Willoughby