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Site Report: FAA Iliamna Station

Site Name: FAA Iliamna Station
Address: Bristol Bay Area, Iliamna, AK 99606
File Number: 2560.38.001
Hazard ID: 2820
Status: Active
Staff: Jenny Gates, 9072628203 jenny.gates@alaska.gov
Latitude: 59.753145
Longitude: -154.913178
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

Updated December 26, 2017: The FAA Iliamna Station site includes the former RTR Building 402, which is located approximately 3.35 miles east of the Iliamna airport. Building 402 is currently leased to the Interior Telephone Company to house their communications equipment. A 1993 Environmental Compliance Investigation Report (ECIR) reported that a bucket was being used to collect leaking fuel beneath a 515-gallon fuel oil aboveground storage tank (AST), located on the south side of the building. DRO was detected as high as 22, 000 mg/kg and BTEX was detected at 32 mg/kg from a surface soil sample. The spill was reportedly cleaned up in 1993; however no documentation of this cleanup was documented by FAA or ADEC. The AST is no longer present at the site.

Action Information

Action Date Action Description DEC Staff
4/10/1998 Meeting or Teleconference Held CSRP staff met with the FAA project manager and FAA's consultant to discuss the work plan for additional site investigation. Several sites at the facility are contaminated by petroleum hydrocarbons. Eileen Olson
5/7/1998 Site Characterization Workplan Approved Site Characterization Workplan Approved this date. Eileen Olson
12/14/1999 Site Added to Database Diesel. Eileen Olson
1/25/2000 Site Ranked Using the AHRM Initial ranking. Eileen Olson
7/31/2001 Update or Other Action Letter from CSRP Intern Elizabeth Stergiou to Gerald Anelon of Iliamna Village Council in response to inquiry from Iliamna Village Council regarding site history, summary of actions, and potential for drinking water to become contaminated as a result of FAA releases. Eileen Olson
8/23/2001 Proposed Plan Conditional approval of "Iliamna FAA Station Work Plan/Health and Safety Plan, Sample Groundwater/Excavate Fuel Affected Soil, FAA Iliamna Station, Iliamna, Alaska" dated August 1, 2001, prepared by Montgomery Watson. The plan proposed sampling existing monitoring wells, decommissioning wells in the area of a planned apron extension, excavation of fuel contaminated soil and reconstructing a long-term stockpile cell. The Department approved the decommissioning of the wells only if new wells are installed to characterize and monitor the extent of DRO groundwater contamination. Eileen Olson
4/9/2002 Site Ranked Using the AHRM Modified 2 areas of the ranking for this station based on file information as follows: 1) Changed Qquantity value to 3 from unknown (2.1) based on file documentation that over 500 tons of contamination have been excavated or are present at the site; 2) Checked the Multiple Sources box as geographically separated sources are present at each of the two main facilities (Quarters Area and Flight Service Station). Eileen Olson
4/29/2002 Update or Other Action FSS site only: Emailed FAA staff two requirements for continuation towards NFRAP; these were concurrence needed by property owner and estimate of volume and location of remaining contamination exceeding site cleanup level. Eileen Olson
9/11/2002 Update or Other Action Requested monitoring results from FAA for quarterly monitoring of drinking water well in the village of Iliamna Eileen Olson
9/18/2002 Update or Other Action Sent letter requesting continued groundwater monitoring 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: Groundwater monitoring plan for 2002 sampling event. Elizabeth Stergiou
12/18/2002 Update or Other Action The site is included in a NALEMP Phase III Site Assessment for the Village of Illiamna dated 11/16/2001 prepared by Portage Environmental. Report is filed in FUDS. Debra Caillouet
9/4/2003 Update or Other Action ADEC approved the workplan for the Fall 2003 Sampling and Analysis Plan for various sites. Deborah Williams
6/27/2005 Update or Other Action Site File Review: Station site separated from other database sites (Living Quarters, FSS, NDB). Station site covers groundwater contamination. Anne Marie Palmieri
9/18/2013 Document, Report, or Work plan Review - other Approved the final work plan describing remedial actions and site characterization activities at 12 areas of concern at the Iliamna Station including the RTR Site, the NDB Site, and the Former Quarters Facility (contains 10 areas of concern). The purpose of the planned remedial investigation is to identify the nature and extent of hydrocarbon contamination at the areas of concern by using an ultraviolet optical screening tool (UVOST) and collecting soil and groundwater samples. The Hydrocarbon Risk Calculator will be used to assess the risk posed by each area of concern. Soil containing diesel range organic concentrations greater than 12,500 milligrams per kilogram based on previous sampling will be excavated and landspread on site for treatment. Melody Debenham
9/10/2014 Document, Report, or Work plan Review - other Approved final 2014 work plan addendum for remedial investigation and supplemental sampling. Additional excavation activities will take place at the tank farm and Building 601 to remove hot spots. Up to 9 monitoring wells within the former quarters facility will be redeveloped and sampled. Melody Debenham
8/17/2015 Update or Other Action No further action is required at the following 5 areas of concern: Building 600 Domestic Water Well; Building 601 West Spill; Building 601 Northeast Wooden Platform Spill; Former Soil Stockpile; and Former Tank Farm Aboveground Feeder Line. Letter attached to database. Melody Debenham
10/1/2015 Document, Report, or Work plan Review - other Approved final work plan addendum 2 describing no-purge groundwater sampling at 8 wells in the Quarters area. Melody Debenham
7/15/2016 Document, Report, or Work plan Review - other Approved final Technical Memorandum documenting no purge groundwater sampling results. Results were lower than samples collected previously using low flow methods. Results from 4 monitoring wells are still above the cleanup level for diesel range organics. Melody Debenham
12/14/2016 Document, Report, or Work plan Review - other Received final Remedial Investigation Report for four sites at FAA Iliamna Station - Quarters Area Building 100, Quarters Area Mobile AST, NDB Building 604, and RTR Building 402. There are 7 additional areas of concern at the FAA Iliamna Station that will be addressed in a separate report. Melody Debenham
8/21/2017 Document, Report, or Work plan Review - other REPORT REVIEW: Draft Remedial Investigation (RI) reports for Seven Sites at Iliamna Station. Dated January 2017. Prepared by Bethel Services. The Department reviewed the HRC data for all eleven sites at the FAA Iliamna Station and it appears that the site-specific data in the report are based on wet bulk density rather than dry bulk density. As such, Method Three calculation could not be performed with the site-specific data provided. The Department recommended that FAA collect additional site-specific data from Iliamna station such that a Method Three calculation can be used. Jamie McKellar
9/7/2017 Meeting or Teleconference Held On September 7, 2016, the Department participated in a teleconference with FAA and Bethel representatives to discuss the status of the Remedial Investigation reports. During the meeting, FAA indicated that the site-specific data presented was indeed for dry bulk density. The Department had previously advised FAA that Method Three calculations could not be performed with the site-specific data provided as it appeared that the data presented were for wet bulk density rather than dry bulk density. The Department agreed to take another look at the site-specific data and revisit the Method Three Calculations. Jamie McKellar
9/25/2017 Update or Other Action Letter issued to FAA regarding 11 sites at Iliamna Station: FAA previously requested that the Department perform Method 3 calculations using the HRC provided in two Remedial Investigation Reports dated October 2016 and January 2017. When entered into the Method Three calculator, the site-specific data presented in both RI reports results in lower alternative cleanup levels than those cited under 18 AAC 75.341. At this time, the Department cannot concur with FAA’s recommendations to close sites at Iliamna Station. Additional investigation and/or remediation are needed to make further determinations. Jamie McKellar
12/7/2017 Update or Other Action REPORT RECEIVED: Final RI Report for Eight Sites at FAA Iliamna Station, dated November 2017. Addressed in 9/25/2017 letter which advised that additional investigation and/or remediation are needed to make further determinations at FAA Iliamna. Jamie McKellar
10/20/2021 Document, Report, or Work plan Review - other Received draft WP addendum to WP (approved April 2021. Addendum is for soil remediation at Bldg 402. 10/27/2021: Comments sent. 4/21/2022: RTC received. 4/26/2022: DEC comments sent back pending final report copy review. 4/28/2022: Final WP copy received. Approval letter sent. Shonda Oderkirk

Contaminant Information

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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