Site Report: Eareckson AS - Tank 503-2/#74
| Site Name: | Eareckson AS - Tank 503-2/#74 |
|---|---|
| Address: | Building 503, NW of Hanger 2; Shemya, Amchitka, AK 99546 |
| File Number: | 2649.38.001 |
| Hazard ID: | 25036 |
| Status: | Active |
| Staff: | Erica Blake, 9074512182 erica.blake@alaska.gov |
| Latitude: | 52.724055 |
| Longitude: | 174.086216 |
| Horizontal Datum: | WGS84 |
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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
Former Tank 503-2, a 20,000-gallon diesel fuel No. 2 underground storage tank (UST), was used as the fuel supply for the heating system at Building 503, which services Hangar 2 on Eareckson Air Station on Shemya Island, Alaska. The UST was removed in 1997 and was in good condition. Petroleum, oil and lubricant (POL) odors were noted after excavation and analytical soil samples were collected prior to being backfilled with clean fill. A site investigation in 2016/2017 was conducted to assess POL impacts at the site. Nine soil borings were advanced. Diesel range organics (DRO), semi-volatile organic compounds (SVOCs) and volatile organic compounds (VOCs) were identified in the soil at concentrations above DEC's Method Two Table B1 and B2 migration to groundwater cleanup levels. The nature and extent of the Former Tank 503-2 site is adjacent and overlapping PL575. Because of site proximity, the Former Tank 503-2 is considered part of PL575. A monitoring well at PL575 was installed, and groundwater sampled to assess impacts. There were no contaminants of concern detected in the groundwater. DRO, naphthalene, benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene remain in the subsurface soil above migration to groundwater cleanup levels. The remedial objective for this site will be to prevent disturbances or relocation of soil with contaminant concentrations exceeding migration to groundwater cleanup levels. Please note, Eareckson AS - Tank 503-2/#74 will be assessed and cleaned up under PL575 (DEC File Number: 2649.38.049, Hazard ID: 26298).
Action Information
| Action Date | Action | Description | DEC Staff |
|---|---|---|---|
| 7/18/1997 | Site Added to Database | Former Staff | |
| 7/18/1997 | Leaking Underground Storage Tank Release Confirmed - Petroleum | LUST Site created in CSP for source area ID 77636 On July 18, 1997 UST was decommssioned by Jacobs Engineering. Consultant confirmed a petroleum release had occurred, soil contamination noted contamination. | Former Staff |
| 7/18/1997 | Leaking Underground Storage Tank Cleanup Initiated - Petroleum | UST permanently closed/ removed from ground. | Tim Stevens |
| 2/5/1999 | Update or Other Action | ADEC project manager sent letter requesting the Air Force to conduct a release investigation of the former UST site. | 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. SA report indicated DRO contamination, 5,500 ppm. 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 503-2 (ADEC #74) 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 |
| 2/15/2007 | Exposure Tracking Model Ranking | Baseline Ranking | Jill Taylor |
| 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. DRO, SVOCs, and VOCs are present in the soil above ADEC criteria. POL contamination in soil and groundwater are co-located with Site PL575 have been delineated in all directions, except to the north. Contamination appears to be present towards the boundary of IRP Site SS025, a former bulk fuel storage facility. This site may be managed together with Sites PL575 and SS025 in the future. | 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 |
Contaminant Information
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Control Type
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Requirements
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There are no documents for this site report.
| Hazard ID | Site Name | File Number |
|---|---|---|
| 26298 | Eareckson Air Station PL575 | 2649.38.001, 2649.38.049 |