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Site Report: Galena AFS/Airport - ST020 UST 1837

Site Name: Galena AFS/Airport - ST020 UST 1837
Address: Galena Airport, Galena, AK 99741
File Number: 860.26.002
Hazard ID: 23151
Status: Cleanup Complete
Staff: No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude: 64.740547
Longitude: -156.951147
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 ST020 is located in the eastern portion of the cantonment “triangle” on less than one acre owned by the City of Galena. The source of contamination at the site is subsurface releases from UST 1837, which received waste oil, diesel, and gasoline from the former floor drains in Building 1837. UST 1837 was removed in 1998. Identified contaminants of concern in soil include DRO, GRO, 1-Methylnaphthalene, 2-Methylnaphthalene, 1,2,4-Trimethylbenzene, 1,3,5-Trimethylbenzene, Benzene, n-Butylbenzene, sec-Butylbenzene, Dibromochloromethane, Ethylbenzene, Ethylene Dibromide, Isopropylbenzene, Naphthalene, n-Propylbenzene, Toluene, and Xylenes. Following cleanup activities, COCs in soil do not exceed the Table B1/B2 Human Health cleanup level, or cumulative risk. Groundwater samples were collected in 2007, 2010, 2011, 2013, and 2014 and there were no exceedances of the Table C cleanup levels.

Action Information

Action Date Action Description DEC Staff
9/7/1999 Underground Storage Tank Site Characterization or Assessment UST sampling and closure report received. Colin Craven
1/31/2001 Update or Other Action Comments submitted on September 7 sampling and closure report. Colin Craven
5/9/2001 Release Investigation Draft of the continued release investigation received. Colin Craven
11/6/2001 Update or Other Action "Follow On Investigation" report received. Report sent to Wiegers. Colin Craven
11/2/2005 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 76032 File review and generation of LUST entries specific to each tank. 2001 site investigation found BTEX, GRO, and DRO contamination. Currently negotiating with AF Compliance about past UST removals to see which merit further investigation or closure. Colin Craven
11/2/2005 Site Added to Database Former Staff
11/2/2005 Leaking Underground Storage Tank Cleanup Initiated - Petroleum Includes removal of UST with no known removal of contaminated soil. Other UST removals at Galena have used contaminated soil as backfill. Evonne Reese
11/30/2005 Update or Other Action RECKEY has automatically been generated. Former Staff
9/1/2010 Site Visit IRP site visit Amanda Loomis
6/3/2011 Document, Report, or Work plan Review - other ST020 SC Work Plan reviewed and comments submitted to USAF Fred Vreeman
6/9/2011 Site Visit IRP site visit Fred Vreeman
6/9/2011 Conceptual Site Model Submitted CSM submitted Fred Vreeman
7/11/2011 Update or Other Action Field Sampling Plan Response to Comments sent to USAF Fred Vreeman
7/12/2011 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 76032 name: autogenerated pm edit - Galena Airport - UST 1837 Amanda Loomis
8/5/2011 Update or Other Action Draft Final ST020 Field Sampling Pland and response to comments recieved from USAF. Fred Vreeman
8/17/2011 Site Characterization Workplan Approved USAF using CERCLA authority. Conditional approval for investigation at site ST020. Fred Vreeman
11/28/2011 Update or Other Action Final Field Sampling Plan received. Dennis Shepard
4/26/2012 Document, Report, or Work plan Review - other DEC received a Draft Site Characterization results report for Site. Dennis Shepard
6/28/2012 Document, Report, or Work plan Review - other DEC provided review comments for the Draft Site Characterization results report. Sample results for the former UST 1837 location indicated DRO contamination to 18,000 mg/kg. Extent of contamination has not been fully defined. Dennis Shepard
5/15/2013 Document, Report, or Work plan Review - other DEC received a Draft Final Site Characterization results report for Site Dennis Shepard
6/18/2013 Document, Report, or Work plan Review - other DEC provided comments for the Draft Final Site Characterization results report for Site Dennis Shepard
6/27/2013 Meeting or Teleconference Held A Teleconference call was held to resolve remaining issues for the Site Characterization results report for the Site. All remaining issues resolved. Air Force will Finalize the report. Dennis Shepard
9/20/2013 Document, Report, or Work plan Review - other DEC received the Final Site Characterization results report for Site ST020. Dennis Shepard
10/3/2013 Site Characterization Report Approved DEC approved the Site Characterization results report for the Site ST020. Dennis Shepard
9/4/2014 Site Characterization Report Approved DEC approved the Addendum Site Characterization (SC) Results Report, Building 1837- Former Underground Storage Tank (Site ST020), Former Galena Forward Operating Location (FOL), Alaska. The purpose of the addendum was to address requirements for an SC Report under 18 AAC 75.335 (c) (ADEC, 2012), specifically, to propose cleanup levels and remedial techniques for the site. Monte Garroutte
9/5/2014 Site Characterization Report Approved DEC approved the Supplemental Site Characterization Results Report, Building 1837 – Former Underground Storage Tank (Site ST020), Former Galena Forward Operating Location (FOL), Alaska. Monte Garroutte
6/29/2016 Cleanup Plan Approved DEC approved the Subsurface Aeration (Vertical Well) Cleanup Plan for site ST020. Dennis Shepard
6/30/2016 Cleanup Plan Approved DEC approved the Subsurface Aeration (Vertical Well) Cleanup Plan for Sites ST020, SS005, CST014, CST011 Area 2, and TU001. 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
10/11/2017 Update or Other Action DEC approved the Subsurface Aeration (Vertical Well) Construction Completion Report for Sites ST020, SS005, CST014, CST011 Area 2, and TU001. Dennis Shepard
6/29/2018 Document, Report, or Work plan Review - other DEC approved the Technical Memorandum, 2018 Data Collection Sampling Plan for Sites ST005 Area D, ST020, SS005, CST011 Area 2, and CG001, Former Galena Forward Operating Location (CH2M, June 28, 2018). 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
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 Performance Monitoring Report (CH2M Hill Sites) for Sites ST020, SS005, CST014, CST011 Area 2, TU001, CG001, CG002, CB001 and Southern ST005, Former Galena Forward Operating Location, Alaska (CH2M, October 2019) Jamie McKellar
5/21/2020 Document, Report, or Work plan Review - other REPORT APPROVAL: 2019 Performance Monitoring Report (CH2M Hill Sites) for Sites ST020, SS005, CST014, CST011 Area 2, TU001, CG001, CG002, CB001, Southern ST005, and ST005 Area C (CH2M, May 2020) Jamie McKellar
7/14/2020 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 76032 Site ST020 - UST 1837. Jamie McKellar
11/25/2020 Cleanup Complete Determination Issued CLEANUP COMPLETE: ADEC has reviewed the environmental records associated with Site ST020 and determined that residual contamination does not pose a risk to human health or the environment. Jamie McKellar
11/30/2021 Document, Report, or Work plan Review - other TECHNICAL MEMORANDUM APPROVAL: Final 2021 Remediation System and Well Decommissioning and Replacement (Sites CG001, CSS002, SS025, ST005, ST020, and TU001), CH2M/Jacobs, November 2021 Jamie McKellar

Contaminant Information

Name Level Description Media Comments
1,2,4-Trimethylbenzene Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
1,3,5-Trimethylbenzene Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
1-Methylnaphthalene Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
2-Methylnaphthalene < Method 2 Most Stringent Soil
Benzene Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
Dibromochloromethane Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
DRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
Ethylbenzene Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
Ethylene dibromide Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
GRO Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
Isopropylbenzene < Method 2 Most Stringent Soil
n-Butylbenzene < Method 2 Most Stringent Soil
n-Propylbenzene < Method 2 Most Stringent Soil
Naphthalene Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil
sec-Butylbenzene < Method 2 Most Stringent Soil
Toluene < Method 2 Most Stringent Soil
Xylenes (total) Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation Soil

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.

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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