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Site Report: AKARNG Alakanuk FSA


Site Name: AKARNG Alakanuk FSA
Address: Osier Street, Alakanuk, AK 99554
File Number: 2403.38.001
Hazard ID: 3060
Status: Active
Staff: Danielle Duncan, 9074655207 danielle.duncan@alaska.gov
Latitude: 62.683231
Longitude: -164.657520
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

Petroleum product from heating oil system. As of December 2016, all of the diesel range organics (DRO) fuel contaminated soil greater than the cleanup level has been removed from the site. Remaining DRO concentrations are less than or equal to 7,500 mg/kg which is less than the site-specific cleanup level of 12,292 mg/kg DRO. The site is characterized by discontinuous permafrost and supra-permafrost water is not a current or future drinking water source.

Action Information

Action Date Action Description DEC Staff
7/27/1998 Update or Other Action Received Preliminary Assessment Records Review report and Draft Site Sampling Plan, both prepared by Hart Crowser, Inc. Scott Pexton
8/12/1998 Site Characterization Workplan Approved Letter sent with approval of draft site sampling plan. Scott Pexton
9/14/1998 Update or Other Action Received Final Site Sampling Plan, prepared by Hart Crowser, Inc. Scott Pexton
12/28/1998 Update or Other Action Received Draft Site Investigation report, prepared by Hart Crowser, Inc. Scott Pexton
6/11/1999 Update or Other Action Letter sent with comments on draft site investigation report. Scott Pexton
8/20/1999 Update or Other Action Received Final Site Investigation Report, prepared by Hart Crowser, Inc. Scott Pexton
11/12/1999 Site Added to Database Petroleum product from heating oil system. Scott Pexton
11/18/1999 Site Ranked Using the AHRM Site ranked based on information in the August 1999 Final Site Investigation report, prepared by Hart Crowser, Inc. Scott Pexton
2/27/2002 Update or Other Action Received "Corrective Action Plan" prepared by Clearwater Environmental, Inc. The plan describes a proposed interim removal action to excavate up to 20 cubic yards of petroleum-contaminated soil to reduce potential exposure to grossly contaminated soil. The plan proposes method one cleanup levels for petroleum hydrocarbons excavated during the interim action, based on Table A1 of 18 AAC 75.341 (Category D cleanup levels proposed are 1,000 mg/kg for GRO, 2,000 mg/kg for DRO, and 2,000 mg/kg for RRO). BTEX concentrations are to be compared to method two, Table B1 Migration to Groundwater cleanup levels. Excavated soil to be transported to a thermal desorption treatment facility located in Lakewood, Washington. Scott Pexton
4/10/2002 Update or Other Action Received "Final Interim Removal Action Plans prepared by Clearwater Environmental, Inc. Scott Pexton
4/15/2002 Site Characterization Report Approved Sent letter to Norm Straub of the Alaska Army National Guard with approval of the 1999 Final Site Investigation report prepared by ERM West, Inc./Hart Crowser, Inc. with conditions: (1) based on the information provided, ADEC does not approve the proposed alternative cleanup levels of 10,250 mg/kg for DRO, 1,400 mg/kg for gasoline range organics (GRO), 1 mg/kg for benzene, 526 mg/kg for toluene, 714 mg/kg for ethylbenzene, and 10,187 mg/kg for total xylenes; and, (2) soil cleanup levels provided under method one and method two apply at a contaminated site unless the department approves an alternative cleanup level that the responsible person has proposed under method three or method four (18 AAC 75.340 (d)). Letter also provided specific comments on the interim removal action plan provided by Clearwater Environmental, Inc. Scott Pexton
5/3/2002 Update or Other Action Received Email message from Norm Straub of the AKARNG with attached Addendum for the Final Interim Removal Action Plan. Scott Pexton
5/14/2002 Interim Removal Action Approved Letter sent to Norm Straub of AKARNG with approval of interim removal action plan (with addendum) prepared by Clearwater The plan describes procedures to conduct an interim removal action in accordance with 18 AAC 75.330. ADEC determined that the proposed interim removal action will reduce human and environmental exposure to hazardous substances at the site and help to prevent the migration of hazardous substances from the site to groundwater and surface water. Up to twenty cubic yards of petroleum-contaminated soil will be excavated and placed in 55-gallon steel drums or 1-cubic yard Supersacks for temporary storage onsite in an area lined with 10-mill polyethylene plastic. The drums or Supersacks will also be covered with a 6-mill polyethylene plastic cover. The contractor intends to transport the contaminated soil via barge to Seattle, Washington and then via highway to a thermal desorption treatment facility located in Lakewood, Washington. Prior to transporting the contaminated soil from the Alakanuk Federal Scout Armory site, the Alaska Army National Guard contractor will obtain written ADEC approval to move the soil in accordance with 18 AAC 75.370 (b). Scott Pexton
5/14/2002 Record of Decision Approved Soil Cleanup Levels: Benzene = 0.02 mg/kg, GRO = 100 mg/kg, and DRO = 200 mg/kg using method one, Table A1 and Table B1 at 18 AAC 75.341. Approximately 20 cubic yards of petroleum-contaminated soil will be excavated in accordance with an approved interim removal action plan. Scott Pexton
7/10/2002 Update or Other Action Received faxed documentation from Norm Straub of the Alaska Army National Guard regarding TPS Technologies Inc., a soil treatment facility in the State of Washington, including a cop0y of the operating permit, and a letter indicating acceptance of soils from seven AKARNG facilities. Scott Pexton
7/16/2002 Update or Other Action Faxed signed authorizationlletter to transport 20 cubic yards of DRO contaminated soil from the Alakanuk Federal Scout Armory to the TPS Technologies treatment facility at 2800 104 St. Court South, Lakeland Washington. Soil will be contained in supersacks and transported by Norhtland Barge to the docks and trucked by Interwest Development Construction to the TPS facility. Scott Pexton
3/15/2004 Update or Other Action File number assigned: 2403.38.001. Sarah Cunningham
6/2/2004 Update or Other Action ADEC received draft Alternate Cleanup level Demonstartion Preoject. Beatrice Egbejimba
6/16/2004 Update or Other Action ADEC reviewed a draft interim removal action report recieved on April 4, 2003. AKARNG provided comments on April 20, 2004. ADEC had no objections to the report based on AKARNG comments. Beatrice Egbejimba
2/4/2005 GIS Position Updated based on consultant' report Debra Caillouet
2/4/2005 Update or Other Action Staff reviewed the July 2004 final workplan that was recieved Oct 04 for the Alternate Cleanup Level Project. The work plan in general meets requirements. Debra Caillouet
2/18/2005 Update or Other Action A letter was sent to the AKANG providing conditional approval of the workplan. Debra Caillouet
8/3/2005 Update or Other Action Staff drafted a letter for the Interim Removal Action Report. Debra Caillouet
8/22/2005 Interim Removal Action Approved A letter was sent to the AKARN approving the IRA report with the following content: The Interim Removal Action documents that 20.8 tons of petroleum contaminated soil was removed and treated at TPS Technologies in Washington. Diesel range organics (DRO) were found up to 12,300 mg/kg remaining in the sidewall of the excavation next to the building. All gasoline range organic (GRO), benzene, toluene, ethylbenzene, and xylene (BTEX) results were rejected due to high moisture content and a possibility that the field sampler introduced two vials of methanol and did not report that to the laboratory. DEC does not have a copy of the field notes and cannot make a decision on the validity of that determination. DEC is aware that an Alternative Cleanup Level demonstration project is ongoing for the site that includes sampling and analysis for GRO and BTEX. The results of that effort could be sufficient to allow determination of any necessary future actions regarding those analytes. When DEC reviewed the Installation Action Plan in March 2005, it was noted that the summary of the Site Investigation (SI) did not include the finding of a leaking creosote container and the storage of dry cleaning solvent in the storage van. It also did not include a drum storage area identified during the site inspection for the SPCC Plan in 1990 or the stressed vegetation noted as being in that area during the SI. This storage area was sampled only for petroleum hydrocarbons and found low levels of DRO. DEC requested that the area be sampled for chlorinated hydrocarbons and SVOCs and the proposed date for the removal of the building to assist in determining an appropriate long-term plan. The Final Interim Removal Action Report adequately documents removal and off site treatment of some petroleum contaminated soil from the site. Therefore, DEC approves the interim action under 18 AAC 75.330. However, because residual petroleum contamination in soil exceeds cleanup levels and there are two areas insufficiently characterized, additional site characterization and/or cleanup are necessary. Debra Caillouet
9/19/2005 Update or Other Action A comment letter was sent to the AKARNG regarding the Draft ACL report. Debra Caillouet
6/12/2006 Cleanup Level(s) Approved A Method III cleanup level was approved. Debra Caillouet
3/14/2008 Exposure Tracking Model Ranking Initial ranking with ETM completed. Debra Caillouet
2/3/2010 Meeting or Teleconference Held Staff participated in the Installation Action Plan meeting. Debra Caillouet
11/30/2010 Report or Workplan Review - Other Staff reviewed and sent comment to the Alaska Army National Guard on the Draft Work Plan for Site Characterization at 21 Alaska Federal Scout Readiness Centers, November 2010, including the Site Specific Plans for Akiak, St. Mary’s and Tuntutuliak. Debra Caillouet
5/23/2011 Site Characterization Workplan Approved Final Work Plan for Site Characterization at 21 Alaska Federal Scout Readiness Centers, April 2011 approved. Debra Caillouet
5/23/2011 Site Characterization Workplan Approved Final Work Plan for Site Characterization at 21 Alaska Federal Scout Readiness Centers, April 2011 approved. Debra Caillouet
6/14/2013 Report or Workplan Review - Other Alakanuk Federal Scout Readiness Center Data Gap Investigation Report, Draft March 2013 The report recommends cleanup levels of 1,400 mg/kg for GRO, 12,292 mg/kg for DRO, and 0.052 mg/kg for benzene based on the default aromatic and aliphatic cleanup levels from 18 AAC 75.34 Table B2 for the ingestion and inhalation pathways. The GRO is capped at the maximum allowable. ADEC has no objection to the use of these cleanup levels. Confirmation sampling will be necessary to show all levels, (total DRO by AK102, DRO Aromatic, DRO Aliphatic, total GRO by AK101, GRO Aromatic, GRO Aliphatic and benzene) are met. Debra Caillouet
8/8/2013 Site Characterization Report Approved Alakanuk Federal Scout Readiness Center Data Gap Investigation Report, Final June 2013 The report recommends cleanup levels of 1,400 mg/kg for GRO, 12,292 mg/kg for DRO, and 0.052 mg/kg for benzene based on the default aromatic and aliphatic cleanup levels from 18 AAC 75.341 Table B2 for the ingestion and inhalation pathways. The GRO is capped at the maximum allowable. ADEC has no objection to the use of these cleanup levels. Confirmation sampling will be necessary to show all levels, (total DRO by AK102, DRO Aromatic, DRO Aliphatic, total GRO by AK101, GRO Aromatic, GRO Aliphatic and benzene) are met. Debra Caillouet
9/19/2013 Cleanup Level(s) Approved ROD signed Debra Caillouet
2/24/2015 Report or Workplan Review - Other Draft Alakanuk Remedial Action Plan, Federal Scout Readiness Center, February 12, 2015 - approved and letter sent. Debra Caillouet
12/17/2015 Update or Other Action Staff changed to Danielle Duncan and hard file transferred to the Juneau office. Kristin Brown
5/3/2016 Update or Other Action Field work is planned for June. Danielle Duncan
9/27/2016 Report or Workplan Review - Other Reviewed the Draft Remedial Action Report this date and had no comments - the report is approved. Excavation activities were guided using a photoionization detector and confirmation samples from the excavation base and sidewalls were submitted to an approved laboratory and analyzed for DRO. Thirteen cubic yards of soil were removed from the site and placed in Super Sacks to be disposed of at the Waste Management landfill in Seattle. Final confirmation sample results (6 samples and a duplicate) had DRO values ranging from 74-7,500 mg/kg which are lower than the site-specific cleanup level of 12,292 mg/kg. I look forward to receiving a final remedial action report. Danielle Duncan
12/20/2016 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 74035 AST. Danielle Duncan
1/5/2017 Report or Workplan Review - Other Rec'd the final remedial action report this date. Danielle Duncan

Contaminant Information

Name Level Description Media Comments

Control Type

Type Details

Requirements

Description Details

Missing Location Data

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