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Site Report: ADOT&PF - Dillingham

Site Name: ADOT&PF - Dillingham
Address: Kenny Wren Road and East Main Street, Dillingham, AK 99576
File Number: 2540.26.002
Hazard ID: 25151
Status: Cleanup Complete - Institutional Controls
Staff: IC Unit, 9074655229 dec.icunit@alaska.gov
Latitude: 59.041655
Longitude: -158.468887
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

In September 1999, 3 USTs were removed. The presence of petroleum hydrocarbons, exceeding ADEC cleanup levels, was evident in the field screening and documented by the laboratory analytical reports. However, no additional excavation was conducted to remove the impacted soil. Approximately 35 yds3 of contaminated soil generated during the UST removal was stockpiled on site.

Action Information

Action Date Action Description DEC Staff
3/7/2000 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 77639 (Added by System) Former Staff
3/7/2000 Leaking Underground Storage Tank Cleanup Initiated - Petroleum 10/13/06 Update action history Evonne Reese
3/7/2000 Site Added to Database Former Staff
6/14/2004 Update or Other Action File number assigned and entered into the Fileroom DB and LUST DB. Alyce Hughey
6/23/2005 Update or Other Action Using Figure 1 from a Closure Report DOT & PF Underground Storage Tank Removal Dillingham, dated January 2000 from R & M Consultants, Inc. in conjunction with TopoZone Pro, entered coordinates for this site. Metadata include USGS Topo Map 1:63K Series, TopoZone Pro Street Maps, on a Medium Size Map, View Scale 1:24,000 and coordinate Datum NAD27. Moderate degree of confidence in accuracy of location. Alyce Hughey
7/11/2005 Document, Report, or Work plan Review - other Reviewed UST closure report. DRO soil contamination exceeding ADEC cleanup standards exists in excavation and stockpile. Additional assessment, corrective action & remediation required. Sent e-mail to ADOT to see if any additional work may have been done since 2000. Donald Seagren
7/12/2005 Update or Other Action DOT has not conducted any further work since UST removal in 2000. A letter was sent requiring additional assessment and corrective action work be conducted to bring the site to closure. The contaminated soil stockpile must remain covered to prevent spread of contamination. Donald Seagren
2/27/2006 Underground Storage Tank Site Characterization or Assessment Review and approve site characterization and remediation work plan Donald Seagren
3/13/2006 Underground Storage Tank Site Characterization or Assessment Review and approve final work plan. Point out possible funding conflict to Admin folks to clarify. Donald Seagren
5/18/2006 Update or Other Action Discuss preliminary site findings with Mike Reiser (SLR). Test pits and holes have not found the contamination at levels reported in the R&M report. At a loss to explain the differences. Installation of MWs will provide additional information on soil & GW contamination. Stockpile will be sampled. Based on assessment and stockpile sampling results, the remediation contractor may not be needed. Decision will be made when more information is available. Donald Seagren
6/26/2006 Document, Report, or Work plan Review - other Review, and approve for final issuance, the 2006 SLR site assessment report. We did not find the level or amount of contamination expected. Some soil contamination at depth and some GW contamination was detected. Contaminated soil stockpile still exceeds ADEC soil cleanup levels. Donald Seagren
11/16/2006 Update or Other Action Drafted a conditional closure ROD and sent to management for review & concurrence. Donald Seagren
12/13/2006 Conditional Closure Approved Semi annual LTM to be established pending CIP funding approval, to begin starting in 2008 Donald Seagren
12/13/2006 Institutional Control Record Established Donald Seagren
12/13/2006 Long Term Monitoring Established Semi-annual groundwater monitoring requirement included as a condition of closure, until two consecutive sampling events meet ADEC groundwater cleanup levels. Paul Horwath
2/15/2007 Exposure Tracking Model Ranking Intitial Ranking Complete for Source Area: 77639 (Autogenerated Action)
6/17/2008 Update or Other Action Site project management transferred from Don Seagren to Paul Horwath per Linda Nuechterlein. Alyce Hughey
1/4/2011 Update or Other Action Site was added to the State-owned CIP funding spreadsheet used by the CSP to project and budget for the assessment and cleanup of State-owned contaminated sites. Paul Horwath
1/4/2011 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 77639 USTs. Paul Horwath
4/3/2012 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 77639 usts. Paul Horwath
6/21/2013 Update or Other Action Project manager changed from Paul Horwath to Peter Campbell, per Paul Horwath. Alyce Hughey
6/24/2014 Document, Report, or Work plan Review - other Work plan approval for groundwater monitoring of 5 on site wells. Peter Campbell
11/19/2014 Document, Report, or Work plan Review - other Sample results from MW-1 in August 2014 showed benzene (0.00505 mg/L) and DRO (2.86 mg/L)exceeding ADEC Table C cleanup levels and showing decreasing concentrations since 2006. Contamination at the site is not causing risk to human health or the environment. I can recommend decommissioning the monitoring wells and closing the site. Peter Campbell
1/21/2020 Institutional Control Compliance Review IC compliance review conducted and historical information entered in the Closure/IC Details section of this database record. Evonne Reese
8/19/2021 Institutional Control Update According to the project manager's recommendations in 2014, I removed future groundwater monitoring requirements from the site record. Evonne Reese

Contaminant Information

Name Level Description Media Comments
BTEX > Table C Groundwater
DRO > Table C Groundwater

Control Type

Type Details
Other

Requirements

Description Details
Groundwater Use Restrictions
New Construction Restrictions

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