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Site Report: Eareckson AS - Tank 619-1/#20

Site Name: Eareckson AS - Tank 619-1/#20
Address: Building 619 Incinerator Building, Shemya, Amchitka, AK 99546
File Number: 2649.38.001
Hazard ID: 24768
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 TU568-619-1 consists of Former Tank 619-1, a 5,000-gallon diesel fuel no. 2 (DF2) underground storage tank (UST) which contained the fuel supply for the boiler and burners at Building 619 (the Incinerator Building) at Eareckson Air Station on Shemya Island, Alaska. Building 619 is no longer in use. The UST, which had passed a tightness testing in August 1994, was filled by truck and was inactive at the time of removal in 1997. There were no known releases at this tank, however petroleum contamination was identified in the tank excavation. In 2016/2017, eleven soil borings were advanced at the tank removal site. DRO and naphthalene was detected above DEC’s migration to groundwater cleanup levels within the footprint of where the tank was in the soil at depths ranging from 11.5 to 14.5 feet below ground surface. In 2022, a monitoring well was installed within the vicinity of the remaining soil contamination, and there were no exceedances in the groundwater. Based on the de minimis contamination remaining and there being no exceedances in the groundwater, this site is recommended for a Cleanup Complete with no institutional controls 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 77854 Contaminated soil found during UST closure 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 sent letter to the Air Force requesting a release investigation be done to find the full extent of the soil contamination. 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 based on information and laboratory data contained in the site assessment reports, tank 619-1 (ADEC #20) will need to have a release investigation done to determine the vertical and horizontal extent of the contamination found during the closure process. Gretchen Pikul
5/25/2007 Exposure Tracking Model Ranking Initial Ranking Jill Taylor
1/11/2012 Update or Other Action The ADEC Contaminated Sites Program sent a letter to the USAF stating that additional investigation is required at this stie to delineate the extent of soil contamination. 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
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
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

Requirements

Description Details

There are no documents for this site report.

No associated sites were found.

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
TDD: 800-770-8973
Physical Location: 410 Willoughby