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Site Report: Galena AFS/Airport - DSWD (DP023) Disposal Site West of Dike

Site Name: Galena AFS/Airport - DSWD (DP023) Disposal Site West of Dike
Address: Cantonment Triangle, West of POL Tank Farm, Galena, AK 99741
File Number: 860.38.045
Hazard ID: 25907
Status: Cleanup Complete - Institutional Controls
Staff: Jamie McKellar, 9074515175 jamie.mckellar@alaska.gov
Latitude: 64.740153
Longitude: -156.962927
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

On June 28, 2021, Site DP023 was closed with institutional controls. Groundwater beneath the site is contaminated, however this contamination is believed to be associated with upgradient Site CG001 and not Site DP023. Accordingly, institutional controls for groundwater will remain in place and will be monitored as part of the remedy for Site CG001 (Galena AFS / Airport – CG001/CG002 MGH/MSA, File No. 860.38.002 and Hazard ID 1416).

Action Information

Action Date Action Description DEC Staff
5/4/2012 Document, Report, or Work plan Review - other DEC received a Draft Remedial Investigation results report for the Site. Dennis Shepard
9/7/2012 Document, Report, or Work plan Review - other DEC provided review comments for the Remedial Investigation results report for the Site. Dennis Shepard
9/7/2012 Site Added to Database A new site has been added to the database Mitzi Read
10/10/2012 Update or Other Action DEC sent a letter to EPA concerning Risk Assessments (RAs) for Remedial Investigation Sites at Galena. DEC has asked EPA to provide an opinion on risk assessment issues requiring resolution for the remedial investigation sites at Galena. Specific issues of concern are: determination of risk assessment source area and calculation of exposure point concentrations Dennis Shepard
11/15/2012 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 79328 name: Disposal Site West of Dike (DSWD) Dennis Shepard
2/7/2013 Document, Report, or Work plan Review - other ADEC received a Draft Final Remedial Investigation results report for the Site. Dennis Shepard
3/6/2013 Document, Report, or Work plan Review - other ADEC provided comments for the Draft Final Remedial Investigation results report for the Site. Dennis Shepard
1/14/2014 CERCLA RI Plan Approved The Alaska Department of Environmental Conservation (DEC) received a Draft 2013 Supplemental Remedial Investigation (RI) and Site Characterization (SC) Sampling Plan on May 24, 2013. The sampling plan presents step out sample locations and analytical protocols for supplemental remedial investigation at six Sites (B400, OWS1833, DSWD, SS006/SS019, and FT001). DEC provided review comments for the draft sampling plan on July 3, 2013. A response to comments (RTC) and a Draft Final version of the plan was submitted on July 25, 2013. DEC provided comments for the Draft Final on July 19, 2013. A comment resolution teleconference meeting was held on July 19, 2013 to resolve the final issues for the sampling plan. All issues were resolved in the meeting and DEC approval was given to finalize the plan. Final version of the sampling plan was received on December 16, 2013 and approval of the work plan was given on January 14, 2014. Dennis Shepard
4/15/2014 Meeting or Teleconference Held A Technical Project Team meeting was held to meet the Air Force newly selected Performance Based Remediation Contractor for Galena. The 6.5 year remediation contract was awarded to Parsons Governmental Services (Parsons). The contract includes completing the risk assessments, remediation feasibility studies, proposed plans and record of decision for remedial investigations at 10 Sites (FT001, SS006, SS013, SS015, SS019, SS018/AOC023, SS022/B400, DP023/DSWD, OW024/OWS1833, and SS025). Dennis Shepard
7/29/2014 Document, Report, or Work plan Review - other DEC approved a 2014 Preliminary Design Investigation Sample Plan at Site DP023 ((DSWD) Disposal Area West of Dike), Former Galena Forward Operating Location (FOL), Alaska. The Sampling Plan presents the investigation approach, sample locations and analytical protocols for a Preliminary Design Investigation at the Site. Dennis Shepard
10/14/2014 Document, Report, or Work plan Review - other DEC approved the 2014 Preliminary Design Investigation (PDI) Sample Plan Addendum for Site DSWD (DP023). The Addendum presents the investigation approach for a geophysical survey at Site DP023 (Disposal Site West of Dike, formerly known as DSWD). The Addendum added the Geophysical Survey Task to work approved on 7/29/2014. Dennis Shepard
2/25/2015 Risk Assessment Report Approved DEC approved a Human Health and Ecological Risk Assessment for the site. The report concluded that there are unacceptable carcinogenic and non-carcinogenic risks to current and future occupational workers and near and long term future residents associated with exposure to contaminants in surface soil via ingestion, dermal contact, and inhalation. The report concluded that there are unacceptable ecologic risks to Terrestrial plants, terrestrial invertebrates and vertebrate receptors for the contaminants in soils. Hazard Quotients greater than 1, indicating that adverse effects may occur from assumed exposures to: metals (lead, selenium, vanadium), high and low molecular weight PAHs, and petroleum hydrocarbons (GRO, DRO, and RRO). A time critical removal action is proposed to begin at the Site in 2015. Dennis Shepard
6/4/2015 Document, Report, or Work plan Review - other DEC approved the Action Memorandum for Time Critical Removal Action for Site DP023, DSWD Disposal Site West of Dike, Former Galena Forward Operating Location, Galena, Alaska. The Action Memorandum documents the time critical removal action to be conducted under the authority of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), 40 Code of Federal Regulations (CFR) 300.415, to remove petroleum hydrocarbons, volatile organic compounds, semi-volatile organic compounds, polychlorinated biphenyl and pesticide contaminants of concern in soils from Site DP023/ DSWD. Dennis Shepard
6/16/2015 Document, Report, or Work plan Review - other DEC approved the Technical Memorandum, 2014 Preliminary Design Investigation Report for Site DP023 (Disposal Site West of Dike) (Parsons), Former Galena Forward Operating Location (FOL), Alaska. The objectives of the 2014 PDI were to: 1) Better define the lateral and vertical extents of debris and contamination within the geophysical anomaly adjacent to West Perimeter Road, and 2) Collect sufficient data to design a removal action proposed for 2015, including the area, depth, and approximate volume of debris and soil requiring removal. Dennis Shepard
8/11/2015 CERCLA Removal Action Plan DEC approved the Time Critical Removal Action (TCRA Work Plan) for Disposal Site West of Dike (Site DP023) August 2015, Former Galena Forward Operating Location (FOL), Alaska. This TCRA is being undertaken in order to mitigate the risks associated with drums containing hazardous substances, PCB transformers and PCB contaminated soil identified at the DP023 site. The TCRA will be conducted by strategically excavating the previously identified geophysical anomaly and the areas where buried drums were encountered; including where PCB concentrations were greatest during previous site investigations. Dennis Shepard
10/26/2016 Site Visit A site visit was conducted and the temporary cap, signage and silt fences were verified in good condition by the DEC Project Manager. Dennis Shepard
10/26/2016 Meeting or Teleconference Held A restoration Advisory board meeting was held in Galena Alaska to discuss the general and specific status of site investigations and cleanup at Galena. Dennis Shepard
8/8/2018 Site Visit DEC conducted a site visit at the Former Forward Operating Location in Galena, AK on August 8-9, 2018. A photo log is available in DEC's electronic file. Jamie McKellar
8/20/2018 CERCLA FS DRAFT FEASIBILITY STUDY RECEIVED: Draft Feasibility Study Report for Disposal Site West of Dike (Site DP023), Former Galena Forward Operating Location, Alaska. Prepared by Parsons. Dated August 2018. Jamie McKellar
9/17/2018 CERCLA Removal Action Report RTCs RECEIVED: Draft Final Construction Completion Report for a Time Critical Removal Action for Disposal Site West of Dike (Site DP023), Former Galena Forward Operating Location, Alaska. Prepared by Parsons. Dated September 2018. Jamie McKellar
10/29/2018 Site Visit On October 23, 2018, DEC participated in the Technical Project Team (TPT) meeting with representatives from USAF and ADOT&PF. A site visit with inspections of each site was conducted the following day (10/24/2018) in Galena, as well as a regional advisory board (RAB) meeting with members of the community and other interested parties. Jamie McKellar
11/8/2018 Document, Report, or Work plan Review - other REPORT APPROVAL: Construction Completion Report for a Time Critical Removal Action for Disposal Site West of Dike/Site DP023 (Parsons, November 2018). Jamie McKellar
3/1/2019 CERCLA Proposed Plan Approval of Proposed Plan: Site DP023, Former Disposal Site West of Dike. The selected remedy includes excavation of the remaining debris area; Treatment of excavated soil at the Galena landfarm, transport to the Galena Landfill, or transport off-site for disposal; Dispose of inert debris at the Galena landfill and transport other debris off site for disposal; backfilling the excavation with clean soil; and groundwater monitoring. Jamie McKellar
4/5/2019 Site Visit On April 2, 2019, DEC staff participated in a Technical Project Team meeting with representatives from USAF, Parsons, CH2M, and ADOT. The TPT meeting was held at the Fairbanks DEC office. On April 3-4, 2019, DEC staff traveled to Galena to participate in meetings with the City Mayor & RAB chair to discuss community concerns about site cleanup; a Proposed Plan meeting for Site DP023, and a community regional advisory board (RAB) meeting to discuss fieldwork completed during the 2018 field season and upcoming 2019 fieldwork. Site visits were also conducted. Jamie McKellar
10/23/2019 Meeting or Teleconference Held On October 22, 2019, DEC participated in the Technical Project Team (TPT) meeting with representatives from USAF and ADOT&PF. A site visit was conducted the following day (10/23/2019) in Galena, as well as a regional advisory board (RAB) meeting with members of the community and other interested parties. Jamie McKellar
10/12/2020 Document, Report, or Work plan Review - other REPORT APPROVAL: Final Construction Completion Report for Disposal Site West of Dike (Site DP023), Former Galena Forward Operating Location, Alaska (Parsons, September 2020) Jamie McKellar
4/8/2021 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 79328 Disposal Site West of Dike (DSWD). Jamie McKellar
6/28/2021 Cleanup Complete Determination Issued CLEANUP COMPLETE WITH INSTITUTIONAL CONTROLS: Groundwater beneath the site is contaminated, however this contamination is believed to be associated with upgradient Site CG001 and not Site DP023. Accordingly, institutional controls for groundwater will remain in place and will be monitored as part of the remedy for Site CG001 (Galena AFS / Airport – CG001/CG002 MGH/MSA, File No. 860.38.002 and Hazard ID 1416). Jamie McKellar
6/29/2021 Institutional Control Record Established Institutional Controls established and entered into the database. Jamie McKellar
11/15/2023 Site Visit DEC, DOT, USAF, and contractors met at the Fairbanks DEC office on May 2, 2023 for a Technical Project Team meeting. The following day a site visit and Regional Advisory Board (RAB) meeting were held in Galena. Meeting minutes for the TPT and RAB meetings were approved on November 15, 2023. Jamie McKellar

Contaminant Information

Name Level Description Media Comments
Benzene > Table C Groundwater Groundwater contamination beneath Site DP023 is attributed to and will be addressed under the cleanup plan for upgradient Site CG001.
DRO > Table C Groundwater Groundwater contamination beneath Site DP023 is attributed to and will be addressed under the cleanup plan for upgradient Site CG001.

Control Type

Type Details

Requirements

Description Details
Advance approval required to transport soil or groundwater off-site.
Movement or use of contaminated material (including on site) in a manner that results in a violation of the water quality standards is prohibited (18 AAC 70)

No associated sites were found.

Missing Location Data

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