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Site Report: FAA Fort Yukon Quarters Facility Bldg 101 UST 9-C-6

Site Name: FAA Fort Yukon Quarters Facility Bldg 101 UST 9-C-6
Address: Airport Vicinity, Fort Yukon, AK 99740
File Number: 740.38.011
Hazard ID: 25397
Status: Cleanup Complete
Staff: No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude: 66.570446
Longitude: -145.240950
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

One underground storage tank was removed at this residence in 1995 as documented in the Fuel Storage Tank Decommissioning Assessments, dated 1995. Tank 9-C-6 was an active 500 gallon diesel tank that was removed and 15 cubic yards of petroleum-contaminated soil were removed. Six (6) confirmation samples were collected and analytical results showed that diesel-range organics concentrations up to 560 mg/kg remained. The department determines that with the low concentrations remaining that there is likely only a very small volume of contaminated soil in place. The department determines that no further remedial action is planned for the Building 101 former tank area. If, in the future, the building is removed and the soil at the former tank area is accessible, the area should be characterized and any contamination managed in accordance with department regulations and guidance, as required by 18 AAC 75.325(i).

Action Information

Action Date Action Description DEC Staff
7/15/1991 Site Added to Database A new site has been added to the database (Date adjusted from 4/10/2009 for report/query consistency. (Reese)) Mitzi Read
7/15/1991 Update or Other Action (Old R:Base Action Code = SA1 - Phase I Site Assessment (General)). PAHs, heavy metals, and DRPH found at elevated levels. Don Gibler
7/15/1992 Preliminary Assessment Approved Phase I Site Assessment (General)). Don Gibler
10/9/1992 Interim Removal Action Approved (Old R:Base Action Code = SA1R - Phase I SA Review (CS/LUST)). Don Gibler
10/9/1992 Update or Other Action Received the Environmental Compliance Investigation Report. Former Staff
5/12/1993 Site Added to Database Lead, DRPH and PAH contamination. Former Staff
5/15/1993 Site Ranked Using the AHRM Initial ranking. Former Staff
6/29/1994 Update or Other Action (Old R:Base Action Code = RPL2 - Site Information Request Letter). Sent PRP-CS Database Notification Letter to RP requesting update and more environmental information concerning contaminated site. RP/Jackie for FAA Anchorage office responded to let me know she will be sending information on the facilities soon. Received information on 8-8-94. Jeff Peterson
8/8/1994 Site Ranked Using the AHRM Reranked (Based on DDT contaminated soil in addition to CERCLA sources). Former Staff
11/27/1995 Update or Other Action Summary of meeting on 11/08/1995 and proposed corrective action approaches. Kent Patrick-Riley
1/17/1996 Update or Other Action Received Underground Fuel Storage Tank (UST) Decommissioning Assessment Report for tanks: 9-C-1 - 9-C-4 at Building 300, 9-C-5 at Building 601, 9-C-7 at Building 100, 9-C-8 at the Old FSS, and 9-C-9 and 9-C-10 at the Yukon Flats Health Clinic. Contamination was left in place at Building 100, the Old FSS, and the Yukon Flats Health Clinic. Confirmation samples were not collected at the depth of the excavation at tank 9-C-3 at Building 300. Former Staff
7/29/1996 Update or Other Action Received the Site Cleanup and Investigation Report documenting sampling. Former Staff
7/8/2002 Update or Other Action Adjusted priority and site location to reflect data provided in reports. Elizabeth Stergiou
7/9/2002 Site Number Identifier Changed Workplan changed from 09 to 01 to reflect no presence of hazardous substances above cleanup levels. Sequence Number changed from 04 to 01. Elizabeth Stergiou
7/16/2002 Update or Other Action Rec'd Memorandum from FAA consultant titled "Product Baildown Tests and Groundwater Sampling Near Yukon River at FAA Tanana Site, Alaska". Eileen Olson
9/18/2002 Update or Other Action Sent letter requesting groundwater monitoring for all existing wells on site, monitoring of the in-situ system, and monitoring of the landspread soil, with a schedule of monitoring to be submitted by March 31, 2003 and the monitoring to be complete by June 30, 2003. Elizabeth Stergiou
9/19/2002 Update or Other Action Sent general letter requesting the following documents be submitted by 10/1/02: status of groundwater monitoring and all groundwater monitoring reports since February 12, 1997, status of the in-situ remediation system and associated soil sand groundwater and all associated reports since February 12, 1997, status of the land spread treatment cell and associated soils and groundwater and all associated reports since February 12, 1997, and status of all contaminated sites at the station. Elizabeth Stergiou
11/21/2005 Update or Other Action Building 101: No Further Remedial Action Planned: Tank 9-C-6, a 500 gallon diesel tank, was removed along with 15 cubic yards of petroleum-contaminated soil in 1995. Six confirmation samples showed an elevated level of 560 mg/kg DRO remaining in-situ. If, in the future, the building is removed and the soil at the former tank area is accessible, the area should be characterized and any contamination managed in accordance with department regulations and guidance. ADEC letter sent November 21, 2005. Anne Marie Palmieri
9/22/2025 Update or Other Action Database actions reviewed and corrected. Historic actions are preserved in the file. AJ Hytry
9/23/2025 Cleanup Complete Determination Issued As determined in 2005, DEC has determined DRO remains at FAA Fort Yukon Quarters Facility Bldg 101 UST 9-C-6, but likely only a small volume of contaminated soil is remaining. The department determines that no further remedial action is planned for the Building 101 former tank area. AJ Hytry

Contaminant Information

Name Level Description Media Comments
DRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil DRO remaining at 560 mg/kg.

Control Type

Type Details
No ICs Required

Requirements

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
25393 FAA Fort Yukon Quarters Facility Bldg 300 Interior Sump 740.38.011
25395 FAA Fort Yukon Quarters Facility Bldg 601 Interior Sump 740.38.011
25396 FAA Fort Yukon Quarters Facility Bldgs 100 & 102 USTs 9-C-7, 9-C-9 & 9-C-10 740.38.011

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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