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Site Report: Eareckson AS - Tank 719-1/#66

Site Name: Eareckson AS - Tank 719-1/#66
Address: Building 719 - RAPCON Facility, Amchitka, AK 99546
File Number: 2649.38.001
Hazard ID: 25053
Status: Active
Staff: Erica Blake, 9074512182 erica.blake@alaska.gov
Latitude: 52.713843
Longitude: 174.113269
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

Site TU568-719-1 consists of Former Tank 719-1, a 500-gallon diesel fuel no. 2 (DF2) underground storage tank (UST) that served as the fuel supply for the heating system at Building 719, the Radar Approach Control Building at Eareckson Air Station on Shemya Island, Alaska. At the time of tank removal in 1997, the UST was inactive, and the building was scheduled to be abandoned. However, according to the USAF Real Property records, Building 719 is currently on-site. The UST was located perpendicular to the east wall of Building 719 and was buried at a depth of three feet below ground surface. When the tank was removed in 1997, soil sampling was conducted, and petroleum contaminants detected. During site characterization work in 2019, there was no evidence of water-bearing zones at the site and groundwater was not present. Seven soil borings were advanced and there was no evidence of contamination. This site has been recommended for a Cleanup Complete determination.

Action Information

Action Date Action Description DEC Staff
7/20/1997 Site Added to Database Former Staff
7/20/1997 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 78008 Low levels of DRO contaminated soils ( 45 mg/kg) were found during UST removal on 7/20/97 Former Staff
7/20/1997 Leaking Underground Storage Tank Cleanup Initiated - Petroleum Source removal. UST removed from the ground, 7/20/97. Tim Stevens
2/5/1999 Update or Other Action ADEC project manager requested the US Air Force to do additional sampling at this site to address the excavated soils placed back into the UST excavation with being tested for petroleum contamination. Also need to tests soil for piping closre. Tim Stevens
1/12/2000 Underground Storage Tank Site Characterization or Assessment ADEC received the site assessment report. This site is one of 43 UST SA reports contained in the April 1998 Draft " Project Report" Eareckson AS. Final report dated June 11, 1999 and entitled "Project Report - UST Site Assessment Reports, AST Removal Reports, and Environmental Compliance Activities." Associated ADEC/STP comment letter dated January 12, 2000 prepared by Timothy Stevens. ADEC comment letter states that a No Further Action letter could be issued for this sites based on the level of contamination found during the tank decommissioning (excavation confirmation samples only). However, the site assessment report indicates piping associated with the tanks was pulled but not assessed for contamination. 18 AAC 78.090 requires piping to be assessed for contamination with a minimum of one confirmation sample collected based on proper field screening. If piping confirmation samples were collected and analyzed, this data needs to be submitted to ADEC. Because of the unregulated status of some of these tanks or the close proximity of the tanks to the buildings/equipment they supplied fuel to, sampling could be waived if the Air Force would supply ADEC with information regarding the type of piping used. ADEC specifically requested information on the material of construction, total length on piping, and whether the piping was one continuous piece or made of sections. Gretchen Pikul
11/16/2007 Site Visit ADEC staff travelled to Eareckson Air Station for 4 days to conduct site visits and become familiar with the ecology and topography of the island. Site visits were conducted to all pertinent sites and meetings were held to discuss the plan moving forward for Records of Decision and remedial alternatives. Jonathan Schick
5/6/2008 Exposure Tracking Model Ranking Intitial Ranking Complete for Source Area: 78008 (Autogenerated Action)
1/10/2012 Leaking Underground Storage Tank Cleanup Initiated - Petroleum Contamianted Sites Staff submitted a letter to the USAF Remedial Project Manager stating that the information provided for the closure of the LUST site did not contain information about this particular tank and additional investigation is being requested in order to move forward with the site investigation and eventual closure. Jonathan Schick
9/25/2014 Meeting or Teleconference Held A project records review and scoping meeting was held between the ADEC and USAF. Additional investigation work is planned for this site during 2015. Jessica Morris
10/22/2015 Update or Other Action The ADEC Contaminated Sites Program reviewed and commented on a draft scope of work for investigation, remedial process optimization, and long term management studies at several sites for Eareckson Air Station. Jessica Morris
8/31/2016 Site Characterization Workplan Approved The ADEC Contaminated Sites Program conditionally approved the 2016 Uniform Federal Policy - Quality Assurance Project Plan (UFP-QAPP) for Site Characterization at 14 Former POL Sites, Eareckson Air Station, Shemya Island, Alaska. The conditions for the UFP-QAPP are as follows: 1) We do not object to the long term monitoring work being completed as outlined in the UFP-QAPP; however ADEC cannot concur that efforts will be counted towards meeting the end point criteria outlined in the decision documents until an adequate monitoring program has been established. 2)The QAPP states that field screening results and field observations will be used to determine additional groundwater monitoring well locations. These locations should to be coordinated with ADEC. 3) The leaking underground storage tank (LUST) sites at Eareckson Air Station will need to be characterized and closed in accordance with LUST regulations that are included in 18 AAC 78. 4) The scope of work for this investigation may not be sufficient to fully characterize the sites listed in the work plan, and additional investigation may be necessary. Jessica Morris
11/14/2016 Site Visit ADEC staff travelled to Eareckson Air Station for 4 days to conduct site visits and become familiar with the ecology and topography of the island. Site visits were conducted to all pertinent sites and meetings were held to with ADEC and USAF to discuss a path forward for the sites. Jessica Morris
11/27/2017 Site Visit ADEC staff travelled to Eareckson Air Station for 3 days to conduct site visits and institutional control inspections. Site visits were conducted to all pertinent sites and meetings were held to with ADEC and USAF to discuss a path forward for the sites. Jessica Morris
2/23/2018 Update or Other Action The ADEC Contaminated Sites Program submitted comments on the Draft Site Characterization Report at 13 Former POL Sites, Phase I, Eareckson Air Station, Alaska. Jessica Morris
2/23/2018 Document, Report, or Work plan Review - other The ADEC Contaminated Sites Program provide comments on the Draft Site Characterization Report at 13 Former POL Sites, Phase I, Eareckson Air Station. Jessica Morris
5/2/2018 Document, Report, or Work plan Review - other The ADEC Contaminated Sites Program submitted comments on the Draft Remedial Process Optimization Report for Eareckson Air Station. The purpose of the report was to present an evaluation of the effectiveness of the current selected site remedies and make recommendations for optimization of an island-wide monitoring and management program for contaminated sites at Eareckson. ADEC had numerous comments on the document, and requested a project team meeting to further discuss a more effective and efficient program at Eareckson. Jessica Morris
10/15/2024 Document, Report, or Work plan Review - other DEC provided responses to comments for the Decision Document for 23 Petroleum Contaminated Sites, Eareckson Air Station, Shemya Island, Alaska, Draft (dated July 2024) to the U.S. Air Force. Most of the responses to comments were acceptable, with a couple requiring additional text changes to the document. Two sites (CS566 and OT617) have contamination present above human health levels and a Notice of Activity Use and Limitations will be required for those sites. Erica Blake

Contaminant Information

Name Level Description Media Comments

Control Type

Type Details

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Description Details

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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
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