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Site Report: FAA Frederick Point NDB Facility

Site Name: FAA Frederick Point NDB Facility
Address: 4.5 Mi. ESE of Petersburg, Frederick Point, Petersburg, AK 99833
File Number: 1521.38.011
Hazard ID: 1762
Status: Cleanup Complete
Staff: No Longer Assigned, 9074655229 dec.icunit@alaska.gov
Latitude: 56.792264
Longitude: -132.821219
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

Updated January 2022 Near NDB Engine Generator Building 402 at the site, burned oily areas and oil-stained soil patches were noted during site investigation in 1998. Burning treated wood and oil area had elevated petroleum levels, high arsenic(860ppm), and hexavalent chrome. Also samples for TRPH turned up 7,700ppm. FAA removed contaminated soil from the North Burn Area northeast of Building 402 in 1998, in 2012, and in 2014, and from the West Burn Area near the wooden deck near Building 402 in 2012, and, in 2014. Confirmation sample results from the 2014 removal action show arsenic is the only contaminant of concern remaining at the burn areas and the extent is de minimis. All structures were disassembled and removed in 2017. In addition, further sampling and excavation in 2017 at the West Burn area and North Burn area. All samples at the West burn area were below ADEC cleanup levels for petroleum contaminants. Arsenic levels in the North Burn Area ranged from 19-160 mg/kg, exceeding the ADEC arsenic cleanup levels. The remaining As levels occur within a large tree truck root system. Soil has been removed to the extent practicable, and by hand. Site closure was requested.

Action Information

Action Date Action Description DEC Staff
4/6/1993 Update or Other Action (Old R:Base Action Code = SA1 - Phase I Site Assessment (General)). Report covers all associated facilities in the Petersburg area used for air navigation. Most significant is Frederick Point, 4.5 miles east-southeast of Petersburg. Former Staff
11/1/1993 Preliminary Assessment Approved Preliminary Assessment Approved this date. Former Staff
9/22/1994 Site Added to Database Remote navigational aid facility near Petersburg. Minimal contamination likely, initial tests showed elevated levels of arsenic. Former Staff
9/22/1994 Update or Other Action (Old R:Base Action Code = RARR - Remedial Action Report Review (CS)). Former Staff
11/28/1997 Site Ranked Using the AHRM Initial ranking. Sally Schlichting
7/11/2000 Site Ranked Using the AHRM Changed Population Density Value from 10 to 3, GW Usage Value from 0.4 to 0, SW Usage Value from 0.4 to 0, and Environmental Recreation value from 0 to 2. Former Staff
1/18/2006 Update or Other Action Updated CSP Database info for site. At request of FAA, reviewed 1993 and 1998 site work for site closure. 1998 confirmational samples indicate full closure of the site is warranted. PAH issues were noted in 1993 and sampling was not performed in 1998, however confirmational samples were Non-Detect for all other compounds and risk pathways appear to be incomplete. Drafting a closure letter for site. Mike Jaynes
6/18/2007 Exposure Tracking Model Ranking ETM ranking Anne Marie Palmieri
3/30/2012 Document, Report, or Work plan Review - other Approved work plan for site investigation and cleanup activities at the North Burn Area and the West Burn Area. An estimated ½ cubic yard of contaminated soil will be removed, containerized and transported off site for disposal from each site. Confirmation samples will be collected for benzene, toluene, ethylbenzene, and xylenes (BTEX), diesel and residual range organics (DRO and RRO), polynuclear aromatic hydrocarbons (PAHs), arsenic, chromium, copper, pesticides, and dioxin. Melody Debenham
11/30/2012 Document, Report, or Work plan Review - other Approved the final report documenting site investigation and cleanup activities at the North Burn Area and the West Burn Area. Approximately ½ cubic yard of contaminated soil was removed from each site. Confirmation samples were analyzed for benzene, toluene, ethylbenzene, and xylenes (BTEX), diesel and residual range organics (DRO and RRO), polynuclear aromatic hydrocarbons (PAHs), arsenic, chromium, copper, pesticides, and dioxin. At the North Burn Area, arsenic and chromium remain above the cleanup level. At the West Burn Area, arsenic remains above the cleanup level. Two samples were collected and analyzed for background concentrations of COCs. Arsenic background was 2 mg/kg. Melody Debenham
5/6/2014 Document, Report, or Work plan Review - other Received work plan for removal of arsenic and chromium contaminated soil at north burn area and arsenic contaminated soil at west burn area. Melody Debenham
2/23/2015 Document, Report, or Work plan Review - other Approved final report describing removal of contaminated soil at two areas of concern. At the north burn area, 0.5 cubic yards of contaminated soil was removed. Samples were analyzed for total chromium and hexavalent chromium. Results indicate that all chromium at the north burn area is trivalent chromium. At the west burn area, approximately 0.25 cubic yards of contaminated soil was removed. Contaminated soil was transported out of state to an appropriate disposal facility. Confirmation sampling indicates that arsenic remain above the cleanup level, however it is not practicable to remove any additional soil at these sites. Melody Debenham
8/12/2015 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 72740 NDB. Melody Debenham
2/7/2017 Update or Other Action Evaluate environmental reports and the FAA and DEC communication regarding what remains after the site characterization and remedial cleanup at the site. Contact made with FAA to discuss actions to take this spring while dismantling the facility. Bruce Wanstall
7/7/2017 Document, Report, or Work plan Review - other Approved the work plan to remove approximately 1 and a third cubic yards of petroleum and arsenic contaminated soil. Danielle Duncan
8/4/2017 Update or Other Action Approve offsite soil transport of several drums of metals contaminated soil to Columbia Ridge. Sally Schlichting
10/10/2017 Update or Other Action Staff assigned changed from Sally Schlichting to Erin Gleason Kathryne Roldan
5/15/2018 Update or Other Action Received draft 2017 report on 4/17/2018. ADEC has reviewed and requested one revision from FAA via email. Erin Gleason
6/1/2018 Site Characterization Report Approved Received revised draft of report from FAA on 6/1/2018.The report is now approved. The FAA removed remaining infrastructure associated with the NDB facility. In addition 0.3 cubic yards (cyd) of arscenic contaminated soil was removed from the north burn area (NBA)and 1 cyd of petroleum contaminated soil was removed from the west burn area (WBA). Three analytical soil samples were collected form the perimeter of the excavation at the NBA and found arscenic of 19 mg/kg, 60 mg/kg, and 160 mg/kg. Excavation at the NBA was inhibited by a large Sitka Spruce tree and its root systems. All soil in the NBA was removed by hand. All other contaminants of concern in the NBA were below method 2 ADEC cleanup levels. Four analytical samples were collected at the WBA and all samples were below ADEC method 2 cleanup levels. Erin Gleason
3/15/2019 Exposure Tracking Model Ranking A new updated ranking with ETM has been completed for source area 72740 NDB. Erin Gleason
4/21/2021 Update or Other Action ADEC sent a letter to FAA on this date documenting that the site was eligible for closure with ICs. Erin Gleason
4/22/2021 Update or Other Action Email send to FAA on this date requesting additional information about the site and contamination beneath the stump. Erin Gleason
8/3/2021 Update or Other Action ADEC received response to April 22 email from FAA. Information in response indicates that the contamination beneath the stump is de minimis. Erin Gleason
9/2/2021 Meeting or Teleconference Held Meeting held on this date with ADEC managers. Site is determined to have de minimis contamination and is closable. Erin Gleason
11/3/2021 Update or Other Action Received email from ADNR (the land owner) asking about site status. ADEC informed ADNR that the site was eligible for clean closure. Erin Gleason
9/29/2022 Cleanup Complete Determination Issued Site closed with de minimus amount of arsenic remaining in soil. No recoverable contaminated soil remains at the site. Bedrock and the site's proximity to a cliff made full contaminant recovery impossible. The site is remote and will not be used for residential purposes. Shonda Oderkirk

Contaminant Information

Name Level Description Media Comments
Arsenic - Total > Human Health/Ingestion/Inhalation Soil Residual arsenic mass is de minimis. Remaining contaminated soil was impossible to remove due to bedrock and the proximity of a cliff.

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
TDD: 800-770-8973
Physical Location: 410 Willoughby