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Site Report: Duffy's Roadhouse

Site Name: Duffy's Roadhouse
Address: Mile 62.7 Tok Cutoff; Glenn Highway, ~2 Miles NE of Slana; 62.7 Miles NE of Gakona Junction, Gakona, AK 99586
File Number: 210.26.010
Hazard ID: 25412
Status: Cleanup Complete
Staff: No Longer Assigned, 9074655229
Latitude: 62.724786
Longitude: -143.914464
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.


During a tank inspection on 7/8/2008, a gasoline release (Photoionization Detector [PID] reading of 1,700 parts per million [ppm]) was discovered on the west end of the tank nest (Tanks 3, 4, and 5), next to Tank #3. According to the Underground Storage Tank (UST) Program, the tanks were temporarily closed in February 2004. This facility also has a previously-closed Leaking Underground Storage Tank (LUST) event, Hazard ID 23347, File No. 210.26.005.

Action Information

Action Date Action Description DEC Staff
5/11/2009 Site Added to Database A new site has been added to the database Mitzi Read
5/11/2009 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST site created in CSP database for source area Gasoline Release - Tank #3, 78779 Mitzi Read
5/12/2009 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 78779 name: Gasoline Release - Tank #3 Mitzi Read
5/19/2009 Potentially Responsible Party/State Interest Letter DEC issued a potential responsible party letter to Terry Ellis to infrom Mr. Ellis that Lorene Ellis is a potential responsible party for known soil contamination. Todd Blessing
9/28/2009 Interim Removal Action Approved DEC staff reviewed EMI's interim removal action report dated September 22, 2009. On July 30, 2009 EMI staff met with former property owners Terry Ellis and Kirk Ellis to discuss the status of the site and identify contaminated soil near a tank island. Excavation of contaminated soil was conducted on the west end of the tank island. Excavation terminated at 9 feet below ground surface and six confirmatory soil samples were collected. The soil samples were analyzed for GRO, DRO, and BTEX. GRO and BTEX were detected at levels that exceed 18 AAC 75.341 Table B1 values (under 40 inch zone). GRO was detected at a maximum level of 16,400 mg/kg and benzene was detected at a maximum level of 1.3 mg/kg. Todd Blessing
9/28/2009 Leaking Underground Storage Tank Cleanup Initiated - Petroleum Retroactive database QC entry on 10/1/09. Bill Janes
2/17/2010 Meeting or Teleconference Held DEC staff met with Kirk Ellis, Chris Gronning, and EMI representatives to discuss next steps of the cleanup process. Mr. Gronning is an attorney that represents Kirk Ellis, a potential responsible party. EMI representatives outlined two approaches to addressing soil contamination at the former LUST site. First, they recommended excavation of all remaining soil and then landfarming the contaminated soil on a property Mr. Ellis owns nearby. A second approach was to cap the soil, advance a soil boring to ensure groundwater was not impacted and then request a closure with institutional controls. DEC staff suggested both approaches could be approved; however, the excavation alternative would be preferred. Mr. Ellis concured with DEC's recommendation and commented that he would request EMI to construct a cleanup plan for excavation and treatment of contaminated material. Todd Blessing
5/3/2010 Site Characterization Workplan Approved DEC staff reviewed and approved Environmental Management Inc.’s “Work Plan – Contaminated Soils Clean Up” for Duffy’s Road House, Dated April 27, 2010. Within the plan, EMI proposes to remove the western most underground storage tank (tank #3) at Duffy’s Roadhouse to excavate contaminated soil underneath. An excavator will dig to a maximum depth of 15 to 18 feet below ground surface to remove contaminated soil. During the excavation, EMI representatives will be on-site to segregate clean from contaminated soils based on field screening methods. Soil suspected of being contaminated will be stockpiled on a liner or directly hauled to a landspreading area. EMI proposed to screen and sample potentially contaminated soils in accordance with CSP’s Underground Storage Tank Manual. Laboratory samples will be analyzed for GRO, DRO, and BTEX by a DEC approved methods. Todd Blessing
5/3/2010 Offsite Soil or Groundwater Disposal Approved DEC staff reveiwed and approved Environmental Management Inc.’s “Landspreading Work Plan – Duffy’s Contaminated Soils Knighten’s Property, Milepost 53 Tok Cutoff Slana, Alaska” Dated April 27, 2010. This plan provides a framework for how contaminated soil that is excavated from Duffy’s Roadhouse is to be treated. EMI proposed to transport contaminated soil estimated to be less than 80 cubic yards to Ammon James Property at Mile 63 on the Tok Cutoff. This soil will be spread in a 20 mil lined treatment cell at depth of 12 inches or less in thickness. The treatment cell will be surrounded by a 12-inch high berm and a sump will be placed at the low point to collect storm water. EMI proposes to till the soil at a minimum of once a month. Storm water will be allowed to evaporate, placed back in the treatment cell, or containerized for treatment at a DEC approved facility. Todd Blessing
5/10/2011 Leaking Underground Storage Tank Cleanup Initiated - Petroleum DEC staff reviewed Environmental Management Inc.’s “UST Removal and Release Investigation Report Duffy’s Road House (UST Fac ID 2497) Milepost A265 Glenn Highway (Mile 62.7 Tok Cutoff), Alaska” Dated March, 2011.This report, discusses the cleanup actions conducted at Duffy’s Road House in 2010. In July, EMI supervised the removal of Underground Storage Tank (UST) #3. Approximately 50 cubic yards of contaminated soil was excavated and hauled to a treatment cell at A. James Knighten’s property, at mile 53 Tok Cutoff. Following excavation activities, six soil samples were collected from the excavation pit sidewalls and bottom based on field screening readings to be analyzed for GRO and BTEX. Sample results revealed that contaminated soil remained underneath the former UST location. In October and November, EMI supervised the excavation of an additional 160 cubic yards of contaminated soil underneath and adjacent to UST #3 and collected a potable water sample from the on-site facility. Excavated contaminated soil was transported to a second treatment cell at Brad and Connie Gavitt’s Property located about a mile west of Slana on the Tok Cutoff. When the bottom of the contamination appeared to be clean based on field data, confirmation samples were collected and the excavation proceeded east towards Tank #4 until it was no longer accessible. Confirmatory soil samples were again collected from the excavation pit bottom and sidewalls to be analyzed for GRO and BTEX. BTEX were detected above DEC migration to groundwater cleanup criteria in a sample collected on the east sidewall near Tank #4. No other contaminants of concern were detected above DEC migration to groundwater cleanup criteria. A potable water sample was analyzed for BTEX and none of these compounds were detected in the sample. Todd Blessing
6/28/2011 Update or Other Action DEC staff approved of EMI's work plan to do the following during the summer of 2011: • Remove Tank #4 (gasoline) confirm the soils are clean under the tank with 2 GRO/BTEX samples. Note: If DRO analysis is also completed one of these samples may be also used to confirm Tank #5 soil is clean at the end closest to Tank #4 per 18 AAC 78.090 (d)(2)(B)(iii). • Remove Tank #5 (diesel). confirm the soils are clean under the tank with 2 DRO/BTEX samples. • Remove the remaining contamination from tank #3 leak. confirm the remaining soil is clean with 2-3 GRO/BTEX samples. • Remove Underground lines from UST#3. confirm soil is clean with at least one (1)GRO/BTEX sample. • Confirm excavated soils left on site are clean with 2-3 GRO/DRO/BTEXsamples. Change in Service Assessment of lines and dispensers that will remain in place: • Underground lines from UST#4 and #5 will be assessed to be used as lines for the new ASTs to hook up to the dispensers. confirm soil is clean with at least one sample per line (GRO/BTEX for Tank #4 line and DRO/BTEX for Tank # 5 line). • Dispensers: A minimum of two samples will be collected to confirm soil is clean. They must be midpoint between the dispensers. Todd Blessing
7/7/2011 Update or Other Action Staff discussed the status of further cleanup actions with Environmental Management Inc (EMI). EMI removed both tanks #4 and #5 and removed the line and dispenser from tank # 3. The lines and dispensers from tanks # 4 and #5 were left on-site, for use with the new AST. EMI completed a site assessment of all the UST’s lines and dispensers (removal or change in service). No evidence of any new contamination was found for Tanks #4 and #5. The field levels at the limit of excavation were much better than last fall, but still had a slight odor. The tank excavation was left open pending laboratory results. Todd Blessing
7/13/2011 Update or Other Action Staff reviewed the confirmation soil analytical results for 2011 excavation activities. No contaminanats of concern exceeded cleanup levels; therefore, staff approved of EMI's request to backfill the excavation. Approximately 70 cubic yard of additional contaminated soil was removed and placed in the landfarm area. Todd Blessing
12/16/2011 Site Characterization Report Approved DEC staff reviewed Environmental Management Inc.'s UST Removal Site Assessment & Soil Removal Report. This report documented the excavation of contaminated soil left in place beneath Tank #3. Approximately 70 cubic yards of contaminated soil was removed and placed in the treatment cell on Gravitt's Property. Confirmation soil samples whithin the excavation pit floor and sidewalls did not exceed 18 AAC 75.341 Table B1 or B2 values. Staff issued a letter commenting on the report and requesting an annual report on landfarming activities. The report should include a schedule and work plan for sampling landfarmed soil. Todd Blessing
12/4/2012 Update or Other Action Staff reviewed Environmental Management Inc.'s "Treatment of Contamianted Soils From Duffy's Road House, Treatment Cell #2, Mile 58 Tok cutoff, Slana, Alaska". This report documented the cell construction details and the treatment activities to date. The cell dimensions was 35 feet by 60 feet with a berm around teh cell 2 feet or higher. 200 cubic yards of material where added to the cell. Limited landfarming activities were conducted during the summer of 2011 and 2012. EMI proposed to conduct a soil characterization study during the summer of 2013. Todd Blessing
4/5/2013 Update or Other Action Reviewed EMI's November 2012 report "Treat of Contaminated Soils from Duffy's Road House (UST Fac ID2491, Treatment Cell #1, Grizzle Lake Ranch, Mile 53 Tok Cut off." Approximately 50 cubic yards of contaminated soil were placed in a lined treatment cell on July 25, 2010, and were aerated an unspecified number of times during the remainder of 2010 and again in Spring 2011. On June 29, 2011, confirmation samples were collected. Results of the confirmation samples were less than the most strigent applicable 18 AAC 75.341 Table B1 or B2 cleanup levels. Jacob Gano
5/5/2014 Update or Other Action ADEC spoke with Kirk Ellis regarding the site status and landfarm sampling schedule. Tilling and sampling occured in 2013. Additional sammpling is planned for 2014 to determine if the landfarm meets cleanup levels. Meghan Dooley
11/14/2014 Report or Workplan Review - Other Reviewed Treatment Cell #2 sampling report for Duffy’s Roadhouse. Cell #2 contains approximately 250 cy of soil. 25 samples were collected throughout the 3-foot deep stockpile for field screening with the bottom most samples collected approximately 4-6 inches above the liner. The 5 samples with the highest field screening results were submitted for laboratory analysis of GRO and BTEX. Contaminants were not detected above cleanup levels in any of the samples. Bill O'Connell
12/2/2014 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 78779 Gasoline Release - Tank #3. Lisa Krebs-Barsis
12/3/2014 Cleanup Complete Determination Issued The Alaska Department of Environmental Conservation (ADEC) has reviewed the environmental records for the Duffy’s Roadhouse site. No further remedial action is required. Bill O'Connell

Contaminant Information

Name Level Description Media Comments
GRO < Method 2 Most Stringent Soil
BTEX Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
DRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil

Control Type

Type Details
No ICs Required


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)
Hazard ID Site Name File Number
23347 Duffys Roadhouse 210.26.005

Missing Location Data

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