Site Report: FAA Lake Minchumina Landspread
| Site Name: | FAA Lake Minchumina Landspread |
|---|---|
| Address: | Lake Minchumina, Lake Minchumina, AK 99757 |
| File Number: | 225.38.001 |
| Hazard ID: | 2910 |
| Status: | Active |
| Staff: | Tim Sharp, 9074512131 tim.sharp@alaska.gov |
| Latitude: | 63.885454 |
| Longitude: | -152.304173 |
| Horizontal Datum: | NAD83 |
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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
Approximately 2200 cubic yards of gasoline- and diesel-contaminated soils excavated from FAA Minchumina sites were placed in lined off-site biocells for treatment. Soils averaged three feet deep in cells while the liner was present. In July 1996, cells were sampled and prematurely decommissioned without waiting for confirmation sampling results by ripping up bottom liner. Department staff converted cell treatment system to landspreading without a liner and allowed further spreading to a depth of approximately one foot thickness. FAA's contractor erroneously spread some of the soils over the tank farm area which had been excavated and backfilled with clean fill. Summer 1998 sample results indicate diesel range organic levels as high as 7,200 mg/kg are still present in the soils. Combination LUST and CS Site.
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 12/27/1999 | Site Added to Database | Diesel and gasoline. | Eileen Olson |
| 1/24/2000 | Site Ranked Using the AHRM | Initial ranking. | Eileen Olson |
| 1/14/2002 | Update or Other Action | See FAA Lake Minchumina for updated database information. | Elizabeth Stergiou |
| 9/18/2002 | Update or Other Action | Sent letter requesting groundwater monitoring for all existing wells on site, with a schedule of monitoring to be submitted by March 31, 2003 and the monitoring to be complete by June 30, 2003. Also requested the long term contaminated soil stockpile constructed during field season 2001 should be cleaned up by the end of field season 2003. | Elizabeth Stergiou |
| 9/19/2002 | Update or Other Action | Sent general letter requesting the following documents be submitted by 10/1/02: the final corrective action report for work completed in 2001 and the final release investigation report for the 2000 release investigation. | Elizabeth Stergiou |
| 9/4/2003 | Update or Other Action | ADEC approved the workplan for the Fall 2003 Sampling and Analysis Plan for various sites. | Deborah Williams |
| 11/17/2011 | Update or Other Action | File review ordered at request of Dept of Natural Resources. | Fred Vreeman |
| 11/29/2011 | Meeting or Teleconference Held | Report to DNR with site summary and recommendation to proceed with selection. | Fred Vreeman |
| 3/27/2012 | Meeting or Teleconference Held | Meeting with FAA to discuss and approve future plans for Minchumina property. The FAA plans to continue to own 10 of our 750 acres, and transfer the other 740. ADOTPF wants some and FAA is not sure who selected the rest. The 10 acres include the landfarm. stockpiles, former building locations etc, basically the main area the FAA occupied at Minchumina. Work at site will continue. Schedule will be submitted annually. | Fred Vreeman |
| 9/15/2014 | Update or Other Action | Verified site is on list for work in FY16. | Fred Vreeman |
| 8/7/2015 | Update or Other Action | Funding in FY15 was used for high priority remediation projects. Request sent this day to FAA asking for status update on Minchumina. | Fred Vreeman |
| 4/26/2016 | Update or Other Action | Site reassigned for follow up by project manager | Fred Vreeman |
| 8/21/2017 | Site Characterization Workplan Approved | Final Work Plan for Lake Minchumina FAA Station Release Investigation was approved. This project includes sampling of the three existing monitoring wells, installation and sampling of up to two additional monitoring wells, Multi Increment (MI) sampling of the landspread and two stockpiles, and Ultra-Violet Optical Screening Tool (UVOST) probing to delineate petroleum contaminated soil (PCS) at eight Areas of Concern (AOCs). The landspread will be sampled in two Decision Units (DUs). Each landspread decision unit will be a vertically measured layer to be sampled at pre-determined depths. The two adjacent soil stockpiles will be MI–sampled as single, individual DU, one per stockpile, with well-defined sample depth intervals for each grid cell. | John O'Brien |
| 2/20/2020 | Update or Other Action | DEC commented on 2019 Draft Report for Lake Minchumina FAA Station Demolition and Remedial Action. The report detailed demolition of four buildings with lead based paint, ACM, and PCBs. Contaminated soil was added to soil stockpiles. The landfarm was tilled weekly during the field season. | Tim Sharp |
| 4/2/2020 | Update or Other Action | DEC Approved 2019 Final Demolition and Remediation report. Four buildings were demo'd and weekly tilling efforts were detailed to remediate POL contaminated soils. All waste streams were accounted for and transport forms were included. | Tim Sharp |
Contaminant Information
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Requirements
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There are no documents for this site report.
No associated sites were found.