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Site Report: Galena AFS/Airport - Bldg 1833 (OWS 1833 / OW024) Oil Water Separator

Site Name: Galena AFS/Airport - Bldg 1833 (OWS 1833 / OW024) Oil Water Separator
Address: Cantonment Triangle, West of POL Tank Farm, Galena, AK 99741
File Number: 860.38.048
Hazard ID: 25910
Status: Cleanup Complete
Staff: No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude: 64.740372
Longitude: -156.949824
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

Last Update: November 9, 2017 Note: The initial remedial investigation referred to this site as Site OWS 1833 which refers to Oil-Water Separator (OWS) at the former Morale, Welfare, and Recreation (MWR) storage shed (i.e., Building 1833). In 2014, the Site ID was changed from OWS 1833 to Site OW024. The MWR Storage oil-water separator (Site OW024) is located on the eastern side of the cantonment “triangle” on property that was transferred from Alaska Department of Transportation and Public Facilities (ADOT&PF) to the City of Galena in 2009. Site OW024 is the site of a 55-gallon partially-buried drum that was used as a drywell for a storage shed. Site investigations conducted in 2011 found that surface and subsurface soils are contaminated with trichloroethene (TCE) around the location of the former drywell, which is thought to be the source of contamination at the site. On May 15, 2017, ADEC approved the Record of Decision (ROD) for this site. Selected remedies include applying soil vapor extraction (SVE) followed by performance monitoring to verify the removal of contaminants. Land use controls (LUCs) will be used to mitigate potential exposures until Cleanup Complete is achieved.

Action Information

Action Date Action Description DEC Staff
4/30/2012 Document, Report, or Work plan Review - other DEC received a Draft Remedial Investigation results report for the Site. Dennis Shepard
7/20/2012 Document, Report, or Work plan Review - other DEC provided review comments for the Draft Remedial Investigation results report. Dennis Shepard
9/10/2012 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: 79331 name: OWS1833 Bldg 1833 Oil Water Separator Dennis Shepard
3/4/2013 Document, Report, or Work plan Review - other ADEC received a Draft Final Remedial Investigation results report for the Site. 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
6/13/2014 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
9/24/2014 CERCLA RI Report Approved DEC provided approval for the Supplemental Remedial Investigation Report, Oil Water Separator 1833 (Site OWS1833), Former Galena Forward Operating Location (FOL), Alaska. Dennis Shepard
11/5/2014 Institutional Control Record Established Institutional Controls established and entered into the database. Dennis Shepard
1/6/2015 Risk Assessment Report Approved DEC approved a Draft Human Health Risk Assessment for Site OWS1833/ OW024. No Contaminants of Potential Concern (COPCs) were identified in groundwater, so the risk estimates do not include groundwater exposure. The Risk Assessment concluded that the cumulative carcinogenic risks and non carcinogenic hazards estimated for the five receptor groups at the site are less than the cumulative risk goal of 1 × 10-5, and Hazard Index less than 1. Dennis Shepard
10/6/2015 CERCLA FS DEC approved the CERCLA Feasibility Study for the Site. The selected alternative for Site OW024 consists of Soil Vapor Extraction (SVE) to actively treat the Trichloroethylene (TCE) contamination in soil and Land Use Controls to control exposure to contaminants of concern in the interim until concentrations reach levels that allow a cleanup complete determination to be made. Dennis Shepard
10/14/2015 CERCLA Proposed Plan DEC approved the CERCLA Proposed Plan- Air Force Proposes Alternatives OWS 1833 MWR Storage OWS (Site OW024) with Soil and Groundwater Impacts – Public Comment Invited, Former Galena Forward Operating Location (FOL), Alaska. Dennis Shepard
10/20/2015 CERCLA Proposed Plan A Restoration Advisory Board (RAB) Meeting was held in Galena Alaska. The DEC approved Proposed Plan for the site SS015 was presented during the RAB meeting. Public comment was recorded during the meeting and written comments were solicited in a booklet which contained all three proposed plans being presented (Plans for Sites SS015, SS0222, OW024). 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
5/24/2017 CERCLA Remedial Design/Remedial Action Plan Approved Reviewed and provided an Approval letter for the May 2017 Remedial Design and Remedial Action Work Plan for OWS1833 MWR Storage OWS (Site OW024. Dennis Shepard
7/18/2017 CERCLA ROD Approved DEC signed the Record of Decision for OWS1833 MWR Storage OWS (Site OW024). 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
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
1/2/2019 Document, Report, or Work plan Review - other REPORT APPROVAL: 2017 Performance Monitoring Report for Sites CPL006, CSS002, OW024, SS014/SS017, SS016, SS022, SS025, ST009, and ST010. Parsons, December 2018. The report presents and evaluates performance monitoring data for sites managed by Parsons with an approved Cleanup Plan or Record of Decision (ROD), and an active remedy installed and operating for fiscal year 2017. Jamie McKellar
1/8/2019 Document, Report, or Work plan Review - other DRAFT DOCUMENT RECEIVED: Draft Explanation of Significant Differences for OWS1833 MWR Storage OWS, Site OW024 (Parsons, January 2019) 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
10/30/2019 Document, Report, or Work plan Review - other REPORT APPROVAL: Final 2018 Performance Monitoring Report for Sites CPL006, CSS002, OW024, SS006/SS019, SS014/SS017, SS015, SS016, SS018, SS022, SS025, ST009, ST010, and FT001, Former Galena Forward Operating Location, Alaska (Parsons, October 2019) Jamie McKellar
12/30/2019 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 79331 OWS1833 Bldg 1833 Oil Water Separator . Jamie McKellar
12/31/2019 Cleanup Complete Determination Issued Site OW024 has met the requirements for a cleanup complete determination. A copy of the cleanup complete determination has been attached to the database. Jamie McKellar
12/31/2019 Institutional Control Record Removed Institutional Controls have been removed. Jamie McKellar

Contaminant Information

Name Level Description Media Comments
Trichloroethene Other Soil The approved ACL for TCE in soil at Site OW024 is 0.17 mg/kg. The maximum remaining concentration is 0.13 mg/kg.

Control Type

Type Details
No ICs Required

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.

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State of Alaska Department of Environmental Conservation

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