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Site Report: Mike's Place UST Spill

Site Name: Mike's Place UST Spill
Address: 1102 Second Street, Douglas, AK 99824
File Number: 1538.38.004
Hazard ID: 3982
Status: Cleanup Complete - Institutional Controls
Staff: IC Unit, 9074655229 dec.icunit@alaska.gov
Latitude: 58.277781
Longitude: -134.394702
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

Heating oil leaked from an underground tank (UST) located in back of the former Mike’s Place Café and migrated into the adjacent downhill residential property. Since removal of the UST and the surrounding soil might threaten structural integrity of the restaurant, ADEC approved emptying the tank, closing it in-place and adding fertilizer to promote natural attenuation of the residual contamination in the soil around the UST. Thirty eight tons of contaminated material was excavated from the sloped area below the tank including the adjacent residential property. Soil nutrients were added to the backfill clean material to enhance natural attenuation should any oil seepage occur from the in-situ soil treatment area. Analytical data from sidewall confirmation sample tests for diesel range hydrocarbons (DRO) indicate contaminated soil cleanup is below applicable cleanup concentrations. Site investigation included examining the drainages system at the adjacent residence that diverts intermittent surface water in the subsurface above shallow bedrock in the area. Field screen and observation detected no signs of residual contamination of soil or water media. Douglas Block 15 Lot 1 and 1A, USS 1180

Action Information

Action Date Action Description DEC Staff
7/21/2003 Preliminary Assessment Approved Steep slope of oil spill zone will hinder cleanup and limit soil removal from the Mike's Place property. UST will be closed in-place; water table several feet below ground surface. An estimated 20 cubic yards of contaminated soil may extend 30 feet long and 10-15 feet wide from the UST to the deck at the adjacent residence. Bruce Wanstall
7/23/2003 Leaking Underground Storage Tank Corrective Action Underway The remedial treatment on Mike’s Place property included cutting open the UST, cleaning it out and filling it with clean sand. An interception trench with perforated piping was installed along the property line to allow periodic addition of fertilizer to support natural attenuation of residual petroleum in the soil; the trench also contains 40 pounds of activated carbon. Bruce Wanstall
7/24/2003 Update or Other Action DEC traveled to the adjacent residence where oil was found coming from one of two French drain lines on the south side of the Damon Property. These lines drain into the creek. An inspection in the basement of the property did not show signs of any oil but there was water on the floor. A drain in the floor led to one of the two lines previously mentioned. This was the line closest to the creek. Bruce Wanstall
7/25/2003 Interim Removal Action Approved In situ treatment of adjacent property soil contamination is not adequate; soil removal action plan approved. Bruce Wanstall
8/12/2003 Cleanup Plan Approved Approval letter sent to the RP consultant with changes and comments. Bruce Wanstall
2/7/2005 Site Added to Database Heating oil UST failed, releasing its contents and migrating onto the adjacent property, whose owner reported the spill. Bruce Wanstall
2/7/2005 Site Ranked Using the AHRM Shallow groundwater has limited the vertical migration of the heating oil into the subsurface. Residual soil contamination is present in surface water drainages. Bruce Wanstall
2/7/2005 Spill Transferred from Prevention Preparedness and Response Program Contaminated soil was remediated off-site with DEC approval; fertilizer was added to the spill zone to promote natural attenuation of petroleum compounds not evaluated in site characterization and cleanup or considered inaccessible for removal. Bruce Wanstall
6/3/2005 GIS Position Updated GIS Data transferred from Garmin GPS 76. Metadata include NAD 27 calibration; data averaged from 50 instrument readings; accuracy considered high. Bruce Wanstall
12/12/2007 Exposure Tracking Model Ranking The controlling pathway is residual subsurface soil contamination surrounding the buried tank that was closed in place. Potential exposure risk will remain high until new site data is indicates that in-situ remediation has been successful in reducing petroleum concentrations to safe levels. Bruce Wanstall
10/3/2008 Update or Other Action ADEC examined the site for Cleanup Complete Determination Bruce Wanstall
12/18/2008 Final Cleanup Report Reviewed ADEC discussed the Cleanup Complete - Institutional Control Decision with the current facility manager. Bruce Wanstall
1/5/2009 Record of Decision A Record of Decision Cleanup Complete letter with Institutional Control Signature Page has been finalized and sent to the responsible party by regular mail certified return receipt requested. Bruce Wanstall
1/23/2009 Institutional Control Record Established Institutional Controls are established with Island Pub owner returning the signature page to ADEC. In summary, installation of groundwater wells, any proposal to transport soil or groundwater offsite, in particular from the UST closed-in-place, require coordination and approval by ADEC. Any movement of contaminated material in a manner that results a violation of 18 AAC 70 water quality standards is prohibited. These controls apply to the property regardless of ownership. Human health exposure assumptions used to reach this closure agreement may change if property use is no longer commercial. The property owner will notify ADEC every five years to document current land use (commercial) and current ownership. Bruce Wanstall
1/23/2009 Cleanup Complete Determination Issued The ADEC has determined that cleanup complete is appropriate for this site using an institutional agreement with the facility owner to control exposure pathways. For residual soil contamination (heating oil) location and closure agreement terms see attached documents. Bruce Wanstall
4/1/2010 Update or Other Action Check Received $1,836.57 from Law 03/25/10 Traci Nebeker
5/14/2014 Institutional Control Compliance Review An IC reminder letter was issued to the responsible party on this date. Kristin Thompson
6/6/2019 Institutional Control Compliance Review IC compliance review completed and a reminder letter was issued to the landowner. Evonne Reese
6/10/2019 Institutional Control Update Received a verbal confirmation from the landowner in response to our recent letter that land use has not changed and no construction is planed on the property. Evonne Reese

Contaminant Information

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

Control Type

Type Details
Signed CS Determination Institutional Controls are established with Island Pub owner returning the signature page to ADEC. In summary, installation of groundwater wells, any proposal to transport soil or groundwater offsite, in particular from the UST closed-in-place, require coordination and approval by ADEC. Any movement of contaminated material in a manner that results a violation of 18 AAC 70 water quality standards is prohibited. These controls apply to the property regardless of ownership. Human health exposure assumptions used to reach this closure agreement may change if property use is no longer commercial. The property owner will notify ADEC every five years to document current land use (commercial) and current ownership.

Requirements

Description Details
Periodic Review The property owner will notify ADEC every five years to document current land use (commercial) and current ownership.
Excavation / Soil Movement Restrictions In summary, installation of groundwater wells, any proposal to transport soil or groundwater offsite, in particular from the UST closed-in-place, require ccordination and approval by ADEC. Any movement of contaminated material in a manner that results a violation of 18 AAC 70 water quality standards is prohibited.
Advance approval required to transport soil or groundwater off-site.

No associated sites were found.

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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