TRP – Heinz Site

Name:
Heinz Salvage Yard
Location:
Mile 4.8 Tok Cutoff, Gakona, AK
Coordinates:
Latitude, 62.312873, Longitude, -145.217487
Area:
4 Acres
Contaminants:
Abandoned vehicles, trailers, snowmachines, rusted car parts, household appliances, used tires on and off the rims, barrels, fallen buildings, Petroleum, Polychlorinated Biphenyls (PCBs), Lead
Contacts:
Native Village of Gakona, Ahtna Inc., AK Dept. of Environmental Conservation, EPA
http://dec.alaska.gov/Applications/SPAR/PublicMVC/CSP/SiteReport/26718
Institutional Controls:
Signage, Gate, and Trenches
Action Information:
May 17, 2017 – Site added to ADEC database
May 2, 2018 – Brownfield Award – SFY 18 DEC Brownfields Assessment and Cleanup service awarded. The Native Village of Gakona applied for a DBAC to assess possible impacts from the neighboring salvage yard on the property owned by Ahtna, Inc.
April 16, 2019 – Brownfield Award – SFY 20 Brownfields funding awarded to the Native Village of Gakona to conduct additional assessment of impacted property owned by Ahtna, Inc. EPA State and Tribal Response Program funding estimate: $110,139.59.
May 15, 2019 – Site Characterization Report Approved – ADEC approved the Site Characterization Activities Former Heinz Salvage Yard, Gakona, Alaska, Revision 3 received on April 18, 2019 on this date. This report documented the site activities conducted at the Former Heinz Salvage Yard in Gakona, Alaska under DEC’s Brownfield Assessment and Cleanup SFY 2019 program. Site activities included digging 34 test pits, 3 trenches, sampling surface water and installing and sampling 3 temporary monitoring wells. Samples were analyzed for Diesel Range Organics by AK 102, Gasoline Range Organics by AK 101, Residual Range Organics by AK 103, Volatile Organic Compounds by 8260, PCBs by 8082A, RCRA metals by 6020B, Polycyclic Aromatic Hydrocarbons by 8270, Dioxanes by 8290, TAH and TAqH by 624 and 625, and 1, 2 Dibromethane by 8011. The report indicates test pit 27 and 28 contained blackened soil and an unknown free product on the surface of the water that pooled in the excavations. The substance was clear with a low viscosity and unidentifiable odor. It did not resemble petroleum and due to the history of the area, could be an unknown glycol. Additionally, the water in in the eastern most portion of TN1 (northwest of test pits 27 and 28) had a sheen, but no stained soil was noted in the trench. None of the soils exhibited elevated photoionization detector readings or x-ray fluorescence readings. However, the same test pits (27 and 28) that contained the unknown free product contained Diesel Range Organics at 3,780 mg/kg and 1,960 mg/kg respectively (above ADEC Migration to Groundwater cleanup levels). The temporary monitoring wells detected several analytes, but none above ADEC cleanup levels. Groundwater was found on the site from 3.36 feet below ground surface to 10.20 feet below ground surface with an approximated flow direction to west southwest. It should be noted that the three temporary monitoring wells were installed prior to the discovery in test pits 27 and 28, therefore none of the wells were located in test pits 27 or 28. The surface water sample was non-detect for Total Aromatic Hydrocarbons (TAH) or Total Aqueous Hydrocarbons (TAqH). It should also be noted that the soil and water samples contained arsenic above ADEC cleanup levels, but in accordance with ADEC regulations, these concentrations are considered to likely be background. Several Quality Assurance/Quality Control issues were identified and explained in the report. However, only data for acetone and tetrahydrofuran results were rejected. It should be noted some analytes could not be detected below ADEC cleanup levels, so their presence above or below ADEC cleanup levels cannot be determined at this time.
February 21, 2020 – Report or Workplan Review – Ground Penetrating Radar (GPR) Work Plan approved on this date. GPR is being utilized on the property in order to guide future sampling in Summer 2020.
May 27, 2020 – Update or Other Action – Ground Penetrating Radar work completed on this date. Data collected will be used to develop the site characterization work plan.
Site Images: