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Site Report: Galena AFS/Airport - SS017 UST 1556-2

Site Name: Galena AFS/Airport - SS017 UST 1556-2
Address: South of the Fire Station Building 1556, Galena, AK 99741
File Number: 860.26.002
Hazard ID: 23154
Status: Cleanup Complete
Staff: No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude: 64.739200
Longitude: -156.951600
Horizontal Datum:NAD83

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

UST 1556-2 was a 300-gallon waste oil tank connected to the Fire Station (Bldg 1556). The tank was pulled in 1997, and DRO was detected above Method 2 cleanup levels. The tank was found to be split upon removal. Contaminated soil was used as backfill after the tank was pulled. --Updated 2011-- SS017 has been identified as a candidate for site characterization. The primary objective of data collection at this site it to characterize the nature and extent of POL contamination in soil laterally and vertically. Target analytes at this site are: DRO, GRO, RRO, VOCs, PAHs, EDB, 1.2 DCA, and metals. This site is also part of a large multiple site interim removal action. In June 2011 ADEC sent a contingent approval for the sampling locations proposed in the site characterization field sampling plan. Additional comment resolution is need for full approval. Additionally in June 2011 ADEC approved the Work Plan for the interim removal action at this site. The primary objective of the interim removal action is to remove the soil source area down to 15 ft bgs. Site characterization sampling is expected to be initiated in the 2011 field season. The interim removal action at this site is scheduled to begin in August 2011. --Update 2014-- In 2011, the Air Force conducted site characterization efforts under 18 AAC 75.335 for the SS017 site. Twenty-six soil borings (SS017_GP001 through SS017_GP026) were advanced to delineate the extent of contamination in surface and subsurface soil at Site SS017. This work was conducted in preparation for an Interim Removal Action to excavate contaminated soil from the vadose zone at Sites SS014 and SS017. These SC borings were advanced within and adjacent to Site SS017, which includes the former truck fill-stands, former valve pit, former UST 1558-1 through UST 1558-5, and former UST 1556-2 (OWS 1556). Data were also collected during the 2011 SC investigation to gain closure approval for the former UST 1556 (DEC File #860.26.002). Former UST 1556-2 (OWS 1556-2) was not considered a source of contamination at SS017. The only target analytes that exceeded extent SLs in vadose zone samples collected near the feature were the Polycyclic Aromatic Hydrocarbons (PAH) benzo(a)pyrene and dibenz(a,h)anthracene, which were detected at 0 to 2 feet bgs. Samples from boring SS017-GP007 and SS017-GP008 indicated PAH contaminants in surface soil (benzo(a)pyrene 0.31-0.37 mg/kg and dibenz(a,h)anthracene 0.0721 - 0.0728 mg/kg). Since the UST was excavated from below ground and the excavation was filled with clean backfill, and since no other exceedances for petroleum contaminants have been identified above cleanup levels in soil or groundwater at the former UST location, the identified surface PAH contamination is most likely not from the UST.

Action Information

Action Date Action Description DEC Staff
11/22/2005 Leaking Underground Storage Tank Release Confirmed - Petroleum LUST Site created in CSP for source area ID 76034 1997 tank pull report documented DRO above Method 2 cleanup levels. Currently negotiating with AF Compliance about past UST removals to see which sites merit further investigation. Colin Craven
11/22/2005 Site Added to Database Former Staff
11/30/2005 Update or Other Action RECKEY has automatically been generated. Former Staff
9/1/2010 Site Visit Site Visit, scoping future IRA locations Amanda Loomis
12/7/2010 Meeting or Teleconference Held TPT Meeting, site discussed Fred Vreeman
1/11/2011 Meeting or Teleconference Held Scoping call for SS014/17/21 Fred Vreeman
2/15/2011 Meeting or Teleconference Held TPT meeting, site discussed Fred Vreeman
4/4/2011 Document, Report, or Work plan Review - other FSP for SS014/16/19/21 reviewed Fred Vreeman
4/19/2011 Meeting or Teleconference Held TPT meeting, site discussed Fred Vreeman
5/11/2011 Meeting or Teleconference Held Traffic control plan/IRA meeting Fred Vreeman
5/23/2011 Meeting or Teleconference Held TPT meeting, site discussed Fred Vreeman
6/9/2011 Site Visit Site Visit to IRA location Fred Vreeman
6/10/2011 Site Characterization Workplan Approved Contingent approval for SC sampling locations. Fred Vreeman
6/10/2011 Conceptual Site Model Submitted CSM submitted Fred Vreeman
7/1/2011 Document, Report, or Work plan Review - other Response to Comments on Interim Removal Action Work Plan receieved from USAF Fred Vreeman
7/7/2011 Document, Report, or Work plan Review - other RTC on IRA workplan reviewed. Fred Vreeman
7/8/2011 Update or Other Action Interim Removal Action Work Plan comment responses acceptance letter sent to USAF Fred Vreeman
7/11/2011 Exposure Tracking Model Ranking Initial ranking with ETM completed for source area id: 76034 name: autogenerated pm edit - Galena Airport - UST 1556-2 Amanda Loomis
7/15/2011 Update or Other Action Draft Final Interim Removal Action Work Plan submitted by USAF Fred Vreeman
7/22/2011 Document, Report, or Work plan Review - other Additional interim removal action markups receieved from USAF Fred Vreeman
7/26/2011 Interim Removal Action Approved Work Plan for interim removal action approved Fred Vreeman
8/24/2011 Update or Other Action Draft Final SS014/SS017/SS021 Field Sampling Plan submitted by USAF Fred Vreeman
9/2/2011 Offsite Soil or Groundwater Disposal Approved Approval to move soil to stockpile at Campion AS Fred Vreeman
9/2/2011 Update or Other Action Final Interim Removal Action Work Plan received from USAF Fred Vreeman
12/22/2011 Leaking Underground Storage Tank Cleanup Initiated - Petroleum Adminstrative action addition for grant reporting purposes. Evonne Reese
12/27/2011 Update or Other Action Draft Final Field Sampling Plan for SS014/SS017/SS021 Approved. Dennis Shepard
5/16/2012 Document, Report, or Work plan Review - other DEC received a Draft Interim Removal Action Excavation Report for Sites SS005, AST1569, SS014, and SS017. Dennis Shepard
5/18/2012 Document, Report, or Work plan Review - other DEC received a Draft Site Characterization Report for Sites SS014/SS017/SS021. Dennis Shepard
11/20/2012 Document, Report, or Work plan Review - other DEC provided review comments for the Draft Interim Removal Action Excavation Report for Sites SS005, AST1569, SS014, and SS017. Based on the review of the removal actions, all abandoned fuel lines at SS017 should be considered future sources of release and require investigation and removal. Dennis Shepard
11/21/2012 Document, Report, or Work plan Review - other DEC provided review comments for the Draft Site Characterization Report for Sites SS014/SS017/SS021. Based on review of the report, the lateral and vertical extent of contamination has not been fully delineated east of SS017. Based on the report and review of sampling, no contamination related to the UST 1556-2 was identified above Method two cleanup levels near the former tank location. Dennis Shepard
9/6/2013 Meeting or Teleconference Held A teleconference was held to discuss final resolution of comments for the SS014/SS017/SS021 Site Characterization Report. Dennis Shepard
12/8/2014 Cleanup Complete Determination Issued Data was collected during a 2011 Site Characterization investigation to gain closure approval for the former UST 1556-2. The Final Site Characterization results report, Birchwood Hangar (Site SS014), Truck Fill-Stands (Site SS017), and Old Fire Station (Site SS021) recommended a cleanup complete determination for the UST 1556-2 site. The only target analytes that exceeded extent SLs collected near the former UST were the Polycyclic Aromatic Hydrocarbons (PAH) benzo(a)pyrene and dibenzo(a,h)anthracene, which were detected below Method two, table B1 cleanup levels at 0 to 2 feet bgs. Based on a review of the environmental record and of cumulative risk calculations using the method three risk calculator, ADEC has determined that residual contaminant concentrations do not pose a cumulative human health risk. Cleanup Complete Status is appropriate. Dennis Shepard
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

Contaminant Information

Name Level Description Media Comments
Benzo(a)pyrene < Method 2 Most Stringent Soil
Dibenzo(a,h)anthracene < Method 2 Most Stringent Soil
DRO < Method 2 Most Stringent 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.

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State of Alaska Department of Environmental Conservation

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