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Site Report: ADOT&PF Homer Facility


Site Name: ADOT&PF Homer Facility
Address: 3450 Sterling Highway, Homer, AK 99603
File Number: 2314.26.002
Hazard ID: 24664
Status: Active
Staff: Paul Horwath, 9072623422 Paul.Horwath@alaska.gov
Latitude: 59.659327
Longitude: -151.642426
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

During the removal of one 3,000-gallon gasoline underground storage tank (UST), and one 4,000-gallon diesel UST, approximately 400 cubic yards of contaminated soil were removed and thermally remediated. Benzene levels were from 4.5-460 parts per million (ppm), gasoline range organics (GRO) levels were from 1,200-9,500 ppm, and diesel range organics (DRO) levels were from 190-19,000 ppm - in soil.

Action Information

Action Date Action Description DEC Staff
2/11/1998 Site Added to Database * Not Assigned
2/11/1998 Leaking Underground Storage Tank Cleanup Initiated - Petroleum * Not Assigned
2/11/1998 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 77631 * Not Assigned
3/25/1998 Update or Other Action Notice of Petroleum Release, request for Corrective Action, Release Notifications, Release Investigation, and Cost Recovery Letter sent by Monica English Alyce Hughey
1/8/2003 Update or Other Action Approximately 400 cubic yards of stockpiled contaminated soil was remediated on-site utilizing a Hot Air Vapor Extraction system. Monica English
6/9/2004 Update or Other Action File number assigned and entered into the Fileroom DB and LUST DB. Alyce Hughey
7/27/2004 Update or Other Action Reviewed file, contacted OASIS Karl Hill to follow up on HAVE treatment of JAN 2003. David Allen
7/27/2005 Update or Other Action Reviewed and organized file. Sent ADOT an e-mail requesting any additional information before sending management decision. Contaminated soil remains above cleanup levels after removing a 3,000 gallon gasoline and 4,000 gallon diesel UST in 1997. Donald Seagren
7/29/2005 Update or Other Action Sent letter requiring assessment &/or cleanup of the former UST excavation site. No assessment or cleanup was done at UST removal in 97. Soil contamination remaining exceeding ADEC cleanup levels. Donald Seagren
11/16/2005 Update or Other Action Using Figure 1 from a Summary Report Underground Storage Tank Closure Report DOT&PF Maintenance Facility, from AGRA Earth & Environmental, dated December 1997, 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
2/27/2006 Underground Storage Tank Site Characterization or Assessment Review & approve Site Characterization work plan. Donald Seagren
6/20/2006 Update or Other Action Review data and approve transport of contaminated soil and GW to Anchorage for treatment & disposal. Donald Seagren
9/19/2006 Underground Storage Tank Site Characterization or Assessment Reviewed site assessment report. Soil & GW contamination remains exceeding cleanup levels. Considering current site use, the documented contamination should not pose an immediate risk to human helath and the environment - although the extent of GW contamination has not been defined. Cleanup and possible additional assessment needed. Donald Seagren
10/9/2006 Update or Other Action Prepared and issued a Request for Proposals for groundwater sampling which is to occur in the spring of 2007. ADEC Term Contractor Shannon & Wilson was selected to perform this work. Donald Seagren
2/14/2007 Exposure Tracking Model Ranking * Not Assigned
4/8/2008 Underground Storage Tank Site Characterization or Assessment Shannon & Wilson Site Characterization report dated February, 2008. Soil borings sampled in 2007 did not contain any contaminants exceeding soil cleanup levels. Groundwater samples from 3 of the 10 MWs contained concentrations exceeding ADEC groundwater cleanup levels. The groundwater concentrations were generally an order of magnitude lower than 2006 levels. The groundwater contaminant plume appears to be defined. Long term groundwater quality monitoring should continue at this site, based on funding availability. Donald Seagren
6/12/2009 Update or Other Action February 2008 Site Characterization, ADOT&PF Maintenance Facility, Homer, Alaska submitted by Shannon and Wilson April 17, 2008 to the RFA: Grants, Loans and Contracts office. The report documents work beginning April 17, 2007 as well as historical data. This report was sent to Soldtona staff on this date. Pam Clemens
3/7/2010 Site Characterization Workplan Approved An RFP was released for a long term groundwater sampling and analysis event. Term Contractor SLR's proposal was received, reviewed, and approved. An NTP was issued to SLR, and the sampling event is to occur in the 2010 field season. Paul Horwath
12/28/2010 Site Characterization Report Approved Term Contractor SLR's 2010 Ground Water Monitoring Report, dated November 2010 has been reviewed. Groundwater samples were collected from the MWs in May, 2010. Groundwater contamination remains in concentrations greatly exceeding ADEC groundwater cleanup levels in MWs 6, 7, and 8. Paul Horwath
12/29/2010 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 77631 USTs. Paul Horwath
3/23/2012 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 77631 USTs. Paul Horwath
6/25/2014 Report or Workplan Review - Other Paul Horwath approved the Shannon & Wilson June 17, 2014 Work Plan for Groundwater Sampling at the ADOT&PF Homer Facility that will include the documenting of the field activities for the site, and including the measurement information for the monitoring wells such as depth of monitoring wells, depth to groundwater, etc. Alyce Hughey
12/10/2014 Site Characterization Report Approved Review term contractor Shannon & Wilson's DRAFT GW sampling and analysis report, covering the July 2014 GW sampling event at this site. Provide edits/corrections. GW contaminant concentrations in MW-8 remain high, consistent with the 2010 GW sampling event. Suggests there may have been another release at this site, or GW flow direction is now to the NW, rather than in the southerly direction that was previously determined back in the 2000s. Paul Horwath
3/12/2015 Update or Other Action Decimal Lat/Long coordinates collected using ADEC Internal GIS map, and entered into database. 59.659327 -151.642426 Paul Horwath

Contaminant Information

Name Level Description Media Comments

Control Type

Type Details

Requirements

Description Details

There are no documents for this site report.

Missing Location Data

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