Skip to content Skip to content

Alaska Department of Environmental Conservation

You are here: DEC / SPAR / CSP / SPAR Online Services / Contaminated Sites Search / Site Report

Site Report: Former Iliamna Newhalen Nondalton Electric

Site Name: Former Iliamna Newhalen Nondalton Electric
Address: Newhalen, Iliamna, AK 99606
File Number: 2560.38.003
Hazard ID: 2150
Status: Cleanup Complete - Institutional Controls
Staff: IC Unit, 9074655229 dec.icunit@alaska.gov
Latitude: 59.751787
Longitude: -154.817033
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

In 1994, a 20 x 40 foot area of diesel impacted soil was encountered from a former above ground storage tank (AST) area. The exact number of ASTs located in this area is unclear. The spill may have occurred from a slow leaky valve from the ASTs. The ASTs were located just north of sample point IP4 Approximately 80 cubic yards of contaminated soil was excavated and put into a biocell on site. Confirmation samples were not collected from the depths of the excavation. Stockpile soil samples collected in 1998 indicate contamination remains in the biocell above ADEC cleanup levels.

Action Information

Action Date Action Description DEC Staff
7/13/1995 Update or Other Action (Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Cleanup and remediation plan received and reviewed. Ray Dronenburg
7/13/1995 Document, Report, or Work plan Review - other On this date, ADEC received Work Plan and Treatment Plan INNEC Iliaska Point Small Spill Clean-up INNEC Job #95-003, submitted by Bristol. In 1994, a 20 x 40 foot area of diesel impacted soil was encountered as a former bulk fuel storage area indicated by seven soil samples with TPH up to 2,590 mg/kg. Groundwater was encountered 12 to 18 inches bgs. Sheen was not noted on the groundwater but there was petroleum odor. It was suspected that a shallow organic silt layer may be preventing vertical migration of contamination to lower water tables. It was also noted that the bedrock is quite shallow. Grant Lidren
7/13/1995 Update or Other Action (Old R:Base Action Code = RPL1 - Initiate Dialog with RP). Initiate dialogue with responsible party. Ray Dronenburg
7/21/1995 Preliminary Assessment Approved (Old R:Base Action Code = SA1R - Phase I SA Review (CS/LUST)). Reviewed a phase 1 site assessment. Ray Dronenburg
7/21/1995 Update or Other Action (Old R:Base Action Code = CORR - Correspondence (General)). Sent ADEC response letter requesting additional information Ray Dronenburg
8/1/1995 Update or Other Action (Old R:Base Action Code = RAPR - Remedial Action Plan Review (CS)). Reviewed and approved remedial action plan. Ray Dronenburg
8/1/1995 Update or Other Action (Old R:Base Action Code = TOTH - Treatment, Other). Treatment approved. Ray Dronenburg
8/4/1998 Document, Report, or Work plan Review - other On this date, ADEC received biocell sampling results submitted by Bristol. Three soil samples collected from the biocell contained DRO of 150, 750, and 2,800 mg/kg. Grant Lidren
9/27/2001 Update or Other Action Telephone call with Jerry Armstrong of INNEC - approximately 80 cubic yards remain in a biocell constructed in 1995. The material in the cell will be tilled this week, then tilled again and resampled next summer (2002). See email in file. Renee Evans
7/12/2004 Update or Other Action File number issued 2560.38.003 Aggie Blandford
3/7/2007 Exposure Tracking Model Ranking Initial Site Ranking using the ETM Don Fritz
3/20/2007 Update or Other Action Letter sent to the RP requesting an update on site activities and if none, submittal of an assessment work plan. Don Fritz
7/3/2007 Update or Other Action Contaminated Sites staff was contacted by Chip Embretson 571-1225/571-1000 regarding the Iliamna-Newhalen Nondalton Electric site on Lake Illiamna. Mr. Embretson advised that he has been unsuccessful in getting the representative for the responsible party to move forward in responding to concerns identified by the department. Mr. Embretson stated that he is interested in purchasing the property, thus he intends to move forward on completing assessment activates in an effort to close out environmental issues at the site so that he can purchase it. Don Fritz
2/7/2008 Update or Other Action Contaminated Sites staff received a phone call from Chip Embretson regarding the Iliamna-Newhalen Nondalton Electric site on Lake Iliamna. Mr. Embretson asked if Bristol Environmental had contacted ADEC staff with regards to continuing assessment and cleanup work on the site. After Mr. Embretson was informed that Bristol Environmental had not contacted Contaminated Sites staff, he stated that he would look for a different consultant to review the file and develop a work plan. Contaminated Sites staff explained to Mr. Embretson that in addition to the soils existing in the bioremediation cell, we have no documentation regarding the actions taken at the site, thus further site assessment and reporting was necessary. Mr. Embretson asked about the possibility of incorporating contaminated soils into roadways, and was informed that this may be a possibility if done under an approved plan. Don Fritz
9/16/2009 Update or Other Action File transferred/received from Soldotna. New ADEC project manager is now Grant Lidren. Linda Nuechterlein
12/17/2009 Update or Other Action On this date, ADEC contacted a prospective buyer. It appears the last sampling event was 1998, which is in accordance with the ADEC file. It is possible that the biocell rests upon a tarp at the area of the former spill. It was discussed that further soil sampling needs to be completed. Grant Lidren
12/28/2009 Update or Other Action On this date, ADEC contacted INNEC. It was discussed that INNEC is considered an RP for this site. Grant Lidren
2/23/2011 Potentially Responsible Party/State Interest Letter Request for further action/RP letter sent on this date. Grant Lidren
9/6/2011 Site Characterization Workplan Approved On this date, ADEC reviewed the Closure Sampling Plan for INNEC – Former Above-Ground Storage Tank Area Lot 1, submitted by JBN Consultants, dated August 31, 2011. A total of six soil samples will be collected including the duplicate. Two surface soil samples will be collected from the biocell and two surface soil samples will be collected from the spill area. Additionally, one comparison sample will be collected outside of the zone of contamination. Grant Lidren
9/5/2012 Update or Other Action On this date, ADEC received the Closure Sampling lab results for INNEC – Former Above-Ground Storage Tank Area Lot 1, submitted by JBN Consultants. A total of six soil samples were collected including the duplicate. Two surface soil samples collected from the biocell contained DRO up to 526 mg/kg. Four surface soil samples collected at the former AST location contained DRO up to 2,310 mg/kg. It is assumed the AST samples were collected from less than 2 feet bgs and at the groundwater interface. Grant Lidren
9/7/2012 Site Characterization Workplan Approved ADEC received and approved amended workplan. Two temporary wellpoints were to be installed downgradient. As of 5/22/2014, ADEC has not recieved the Report for this field work. Grant Lidren
3/5/2014 Meeting or Teleconference Held On this date, a meeting was conducted with APC Services LLC discussing potential field work at the site in 2014. Grant Lidren
5/21/2014 Document, Report, or Work plan Review - other ADEC approved the Draft Closure Sampling Work Plan Former AST Area submitted by APC Services LLC dated May 2014 with the following condition: the biocell shall be containerized and/or covered during transport. Field work is planned for the week of June 8, 2014. Grant Lidren
5/22/2014 Offsite Soil or Groundwater Disposal Approved On this date, ADEC approved the disposal of remediated biocell soil to the landfill. Grant Lidren
7/9/2014 Meeting or Teleconference Held Attended a meeting with APC Services to discuss the July 2014 Draft Investigation Report. Grant Lidren
7/9/2014 Site Characterization Report Approved On this date, ADEC received the “Draft Investigation Report Former Above-Ground Storage Tank Area Lot 1, Iliaska Subdivison, Iliamna, Alaska” submitted by APC Services LLC dated July 2014. Grant Lidren
9/2/2014 Site Characterization Report Approved On this date, ADEC received the “Final Investigation Report Former Above-Ground Storage Tank Area Lot 1, Iliaska Subdivison, Iliamna, Alaska” submitted by APC Services LLC dated August 2014. On June 9th and 10th, approximately 80 cubic yards of petroleum impacted soil from the biocell was transported to the Newhalen Landfill. The former pipe was bent to seal it off and left in situ. Removal of the pipe was not practical without damaging the berm. The two historic well points, GW1 and GW2, did not contain groundwater for sampling. Well point GW3 installed within the source area contained DRO up to 2.65 mg/L. GW4 installed downgradient of the source area and 20 feet up gradient of Lake Iliamna did not produce groundwater for sampling due to poor permeability, but contained a strong hydrocarbon odor and sheen. A soil sample collected from the GW4 groundwater interface at 20 inches bgs contained DRO at 4,210 mg/kg. Four out of the 10 soil samples collected 12 inches bgs from the former AST farm contained DRO above ADEC migration to groundwater cleanup levels with DRO up to 1,830 mg/kg. Three of these samples contained a strong hydrocarbon odor. Seven shovel sheen tests along the beach did not contain evidence of petroleum contamination. An additional investigation was conducted on July 25th to determine extent of contamination encountered at GW4. The Lake level was higher during this investigation; within 2.7 feet of GW4. Two out of the six soil samples collected 12 inches bgs to the GW interface contained DRO up to 3,250 mg/kg. The two historic well points, GW1 and GW2, did not contain groundwater for sampling. A groundwater sample collected from GW4 contained detectable levels of DRO, but below method two cleanup levels (note: this sample is considered bias low due to limited recharge in the well). A surface water sample collected from the Lake was ND for TAH and TAQH and contained detectable levels of DRO but below groundwater cleanup levels. Grant Lidren
10/29/2014 Cleanup Complete Determination Issued The Alaska Department of Environmental Conservation (ADEC), Contaminated Sites Program, has completed a review of the environmental records associated with the Former Iliamna Newhalen Nondalton Electric. Based on the information provided to date and the administrative record, the ADEC has determined that the contaminant concentrations remaining on site do not pose an unacceptable risk to human health or the environment. No further remedial action will be required as long as the site is in compliance with established institutional controls. Grant Lidren
10/29/2014 Institutional Control Record Established Institutional Controls established and entered into the database. Grant Lidren
11/26/2014 Update or Other Action The Notice of Environmental Contamination was received from DNR on this date. Grant Lidren
7/21/2015 Update or Other Action Per an email correspondence from INNEC, MW-4 was decommissioned in June 2015. Grant Lidren
11/16/2015 Institutional Control Compliance Review IC compliance review conducted, staff name changed from Lidren to IC Unit, and reminder system set to review the site record in October 2019. Nathan Maxwell
1/25/2016 Update or Other Action This property has been sold to the Lake and Peninsula Borough. The landowner information has been updated in the database record. Evonne Reese
3/22/2017 Institutional Control Compliance Review IC compliance review conducted. Closure/IC Details updated. Five-year review of land use conditions is scheduled for 2019. Kristin Thompson
12/6/2019 Institutional Control Compliance Review An Institutional Controls reminder letter mailed to the landowner on this date. Mossy Mead
12/23/2019 Institutional Control Update Received an email verification from the property owner representative that all ICs are in compliance and there have been no changes in land use. Evonne Reese

Contaminant Information

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

Control Type

Type Details
Notice of Environmental Contamination Document ID #2014-000296-0 filed in the Iliamna Recording District of the State Recorder's Office on 10/29/2014.

Requirements

Description Details
Advance approval required to transport soil or groundwater off-site. Standard condition.
Groundwater Use Restrictions Installation of groundwater wells will require ADEC approval
Other The landowner must report to ADEC every five years to document land use, or as soon as they become aware of any change in lan ownership and/or use.
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.

No associated sites were found.

Missing Location Data

Because the GIS location data for this site has not been entered, we cannot direct you to its position on the map. Click "Continue" to proceed to the Contaminated Sites Web Map or "Close" to return to the site report.
Continue     Close

Public Notices  •  Regulations  •  Statutes
Press Releases  •  Contact

 

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