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Site Report: Eareckson AS - Tank ID 76201-2/#47

Site Name: Eareckson AS - Tank ID 76201-2/#47
Address: Building 76201; New Vehicle Maintenance Facility, Amchitka, AK 99546
File Number: 2649.38.001, 2649.26.008
Hazard ID: 23547
Status: Active
Staff: Erica Blake, 9074512182 erica.blake@alaska.gov
Latitude: 52.724152
Longitude: 174.118777
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 TU568-743 refers to the corrected location of Tanks 76201-1 and 76201-2, two former underground storage tanks (USTs). Former Tank 76201-1 was a 5,000-gallon diesel fuel no. 2 (DF2) UST and former Tank 76201-2 was a 5,000-gallon MOGAS UST. During site characterization work, visual reconnaissance and review of engineering documents identified the corrected locations for these tanks to be west of Building 743 at Eareckson Air Station on Shemya Island, Alaska. Contamination was identified in the excavation after the two USTs were removed in 1997. In 2019, site characterization was conducted to assess contamination in the vicinity of the former USTs. Ten soil borings were advanced with one completed as a monitoring well (SB10). Diesel range organics (DRO), semi-volatile organic compounds (SVOCs) and volatile organic compounds (VOCs) were detected in the soil exceeding DEC migration to groundwater cleanup levels. The contamination has been delineated vertically, but the lateral extent has not been defined to the south and west of the former UST locations. A groundwater sample was collected from the monitoring well installed downgradient from the former UST and fill stand, and there were no contaminants of concern detected exceeding cleanup levels. Both Tank 76201-1 and Tank 76201-2 were located adjacent to one another, so both sites in the Contaminated Sites database are associated. Site cleanup efforts have addressed both areas. Refer to associated site: Eareckson AS - Tank ID 76201-1/#46 (DEC File Number 2649.26.010, Hazard ID 23546).

Action Information

Action Date Action Description DEC Staff
8/30/1994 Update or Other Action NOR; Suspected release reported and DEC letter sent. Former Staff
8/30/1994 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 77999 ADD; Site added to database. Former Staff
8/30/1994 Site Added to Database Former Staff
12/31/1994 Leaking Underground Storage Tank Cleanup Initiated - Petroleum 10/11/06 LUST Cleanup Initiated - Petroleum added Evonne Reese
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 review of the UST diagram (Figure 2.23-1) submitted as part of the site assessment report for this UST indicates dispensers were located approximately 23 feet to the east of the tank. A review of the assessment narrative and laboratory data presented indicates the piping and the dispenser island was notclosed in accordance with 18 AAC 78.090. ADEC requests the Air Force to submit a work plan to assess the piping runs and the dispenser island associated with this UST. Gretchen Pikul
4/30/2004 Update or Other Action unused entry. Former Staff
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
4/29/2008 Exposure Tracking Model Ranking Intitial Ranking Complete for Source Area: 77999 (Autogenerated Action)
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
2/4/2019 Site Characterization Workplan Approved The ADEC Contaminated Sites Program approved the Final Addendum Addendum Uniform Federal Policy – Quality Assurance Project Plan (UFP-QAPP) for Site Characterization at 13 Former POL Sites, Eareckson Air Station, Sheyma Island, Alaska. The QAPP Addendum was approved with the following conditions: 1)ADEC requests weekly field meetings during the effort. 2)the LUST regulations in 18 AAC 78 still need to be achieved. 3) the scope of work for this effort may not be sufficient to fully characterize the sites, and additional characterization may be necessary. Jessica Morris
4/27/2022 Update or Other Action On 4/27/2022 ADEC approved the Eareckson Air Station, Alaska, REMEDIAL PROCESS OPTIMIZATION REPORT dated April 2022. This Remedial Process Optimization (RPO) Report presents an evaluation of the effectiveness of current selected site remedies and makes recommendations for optimization of the IWM Program, as appropriate to establish a more integrated groundwater monitoring program at Eareckson AS. RPO is a systematic approach for evaluating and improving the effectiveness of site remediation without increasing site risk. This RPO Report presents a site-by-site evaluation of effectiveness of the sites selected remedy and provides recommendations to: • Streamline groundwater monitoring. • Develop a holistic approach to site management. • Maintain the remedial action objectives (RAOs) set forth in established Record of Decisions (RODs) and Decision Documents (DDs). Daniela Fawcett

Contaminant Information

Name Level Description Media Comments

Control Type

Type Details

Requirements

Description Details

There are no documents for this site report.

Hazard ID Site Name File Number
23546 Eareckson AS - Tank ID 76201-1/#46 2649.38.001, 2649.26.010

Missing Location Data

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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
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