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Site Report: Residence - 904 Les Rogers Turnaround HHOT

Site Name: Residence - 904 Les Rogers Turnaround HHOT
Address: 904 Les Rogers Turnaround, North Pole, AK 99705
File Number: 100.38.210
Hazard ID: 4342
Status: Cleanup Complete - Institutional Controls
Staff: IC Unit, 9074655229 dec.icunit@alaska.gov
Latitude: 64.746320
Longitude: -147.327600
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

As part of a fencing project, a post was placed at the corner of the house. The fence post severed the heating oil return line. Over the next three weeks approximately 1000 gallons of #2 diesel heating oil were released to the subsurface. Response actions included the removal of 143.5 tons of contaminated soil and the recovery of approximately 500 gallons of fuel from the groundwater surface.

Action Information

Action Date Action Description DEC Staff
1/17/2007 Spill Transferred from Prevention Preparedness and Response Program Site transferred by PERP staff Tom DeRuyter. Spill No. 06309929301; Spill Date = 10/20/06; PERP file no. 100.02.290; Volume = ~1,000 gallons; Subtance = #2 Diesel. Mitzi Read
1/18/2007 Site Added to Database Site added to the database. Mitzi Read
1/19/2007 Exposure Tracking Model Ranking Baseline ranking completed. Mitzi Read
2/8/2007 Update or Other Action Received a call from Lyle Gresehover regarding future management of the site. We discussed the fact that wells on adjacent properties have been sampled and were not impacted by the spill. The owner is still recovering a few gallons of fuel as it accumulates on top of the frozen groundwater. Lyle thought a passive skimmer system would work well for product recovery this summer. I suggested we collect a sample from the on-site well this winter, and put in a down-gradient monitoring well in the spring. After sampling the downgradient monitoring well we can evaluate a long term strategy for the site. Kim DeRuyter
4/16/2007 Long Term Monitoring Established ADEC sent a letter to the owners of the property establishing an IC for the annual monitoring of the on-site drinking water well. Deborah Williams
4/16/2007 Update or Other Action ADEC sent a letter to the owners stating that an additional downgradient monitoring well was required. All the monitoring wells should be monitored annually at high water table for the next three years. If after three years of data, the data shows a decreasing or steady state plume, then re-evaluate the monitoring schedule. Deborah Williams
4/19/2007 Update or Other Action Received an email for the Prewitt's. They stated that since the spill, they have recovered over 295 gallons of oil product from the recovery well. Deborah Williams
8/6/2007 Potentially Responsible Party/State Interest Letter A letter was sent to Denali Fenceworks (Joe Vargus) regarding their potential responsibility / liability associated with the release of heating fuel from the broken pipe. They were requested to respond to the matter and provide information. Jim Frechione
8/21/2007 Update or Other Action Denali Fenceworks (Joe Vargas) responded with a detailed description of the events leading up to their installation of the fence at the Prewitt residence. he indicated Mr Prewitt established the location of the fence post that damaged the fuel line and did not consider his company liable for the associated damages Jim Frechione
3/21/2008 Update or Other Action Staff reviewed file for a response to PDC regarding a proposed utility line installation in the area. The contaminated soil has been excavated, except for the impacted soils that are beneath the house. There remains some free phase petroleum on the water table and a groundwater plume that has not been completely delineated. The plume, however, appears to be fairly limited in extent based on sampling neighboring drinking water wells and one on site monitoring well. ADEC has requested additional monitoring. The utility project should not encounter any soil contamination based on their current proposal to only dig in the road. Groundwater contamination could be a concern if there was extensive dewatering. The closest proposed lift station is approximately 1,000 ft away from the site. Ann Farris
3/21/2011 Update or Other Action Staff reviewed the January Groundwater Monitoring Report. The diesel concentrations increased in MW-3 from 2010. Given the concentrations of benzene and proximity to the garage, vapors in the building are a possibility. Residual soil contamination beneath building and unrecoverable fuel on water table. Don't suspect off site migration, but unable to completely delineate. Will collect some air samples and another groundwater sample. Owners have done as much source removal as possible. Did not receive money from the fence company that drilled through the tank. They want to sell the property, but these data are insufficient for a closure at this time. Set up a meeting for April 1. Ann Farris
12/8/2016 Update or Other Action Mailed a Home Heating Oil Tank Pilot Project outreach letter to homeowner. Michael Hooper
12/23/2016 Update or Other Action Landowner responded to outreach letter and indicated they will meet with DEC after they return to the state in April 2017. Michael Hooper
5/10/2017 Meeting or Teleconference Held Met with the Homeowners, will schedule site visit for early summer. In the meeting they confirmed that they had not received money from fencing company and had spent a large sum of money on cleanup. They are still trying to sell the property. Michael Hooper
6/6/2017 Site Visit Conducted a site visit to evaluate vapor intrusion potential at the residence. Michael Hooper
7/28/2017 Update or Other Action The homeowners came into the office to discuss well decommissioning and to sign the notice of environmental contamination - institutional controls (NEC-IC). Michael Hooper
7/31/2017 Update or Other Action Conducted a site visit to provide guidance to homeowner regarding monitoring well decommissioning. Monitoring wells 1-3 were cut off 1 foot below grade and sealed with bentonite. Michael Hooper
8/3/2017 Cleanup Complete Determination Issued A Cleanup Complete - Institutional Controls determination has been made for this site. Remaining soil contamination is inaccessible under the garage and the groundwater plume is stable and decreasing. A notice of environmental contamination has been filed with the DNR recorder's office and institutional controls are in place requiring management of contaminated soils and restricting groundwater well installation. Michael Hooper
8/3/2017 Institutional Control Record Established Institutional Controls established and entered into the database. Michael Hooper
5/22/2018 Institutional Control Compliance Review Staff changed from Michael Hooper to IC Unit. IC compliance review conducted. Closure/IC Details updated. Reminder system set to follow-up on land use conditions every five years. Kristin Thompson

Contaminant Information

Name Level Description Media Comments
DRO > Human Health/Ingestion/Inhalation Soil Soil contamination was found at 18,100-mg/kg under the garage.
BTEX Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil Toluene, Ethylbenzene, and Xylene were found at 7.797, 16.9, and 78 mg/kg, respectively.
DRO > Table C Groundwater DRO was found at 87 mg/kg in the source area. down gradient wells were non-detect.
BTEX > Table C Groundwater Benzene, ethylbenzene,and xylenes, were found at 146, 105, and 259 ug/L, respectively in the source area well. down gradient wells were non-detect.

Control Type

Type Details
Notice of Environmental Contamination A notice has been filed with the recorder's office

Requirements

Description Details
Advance approval required to transport soil or groundwater off-site. Standard condition.
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) Standard condition.
When Contaminated Soil is Accessible, Remediation Should Occur In the event that the remaining contaminated soil becomes accessible in the future due to the building being removed, the land owner shall notify ADEC, characterize, and, if determined necessary, cleanup the soil.
Groundwater Use Restrictions No additional groundwater wells shall be installed on the subject property covered by the institutional controls without prior DEC approval.
Other The Landowner agrees to notify ADEC prior to any sale or transfer of the property and shall report to ADEC every 5 years to document the status of compliance with the institutional controls described in this notice. Such notice and reports should be submitted electronically to CS.Submittals@alaska.gov or sent to ADEC at: Alaska Department of Environmental Conservation Division of Spill Prevention and Response Contaminated Sites Program Attention: IC Unit P.O. Box 111800 Juneau, AK 99811-1800
Other Standard condition.

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