Site Report: ADOT&PF Former Holiday House Apartments
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.
Between October 2015 and June 2015 site assessment activities were performed in conjunction with the Alaska Department of Transportation and Public Facilities (ADOT&PF) University Avenue Rehabilitation & Widening Environmental project. One of the two parcels assessed during this project was the location of the former Holiday House Apartments at 655 University Avenue (aka Parcel L).
Contaminated soil was encountered at the following locations during the site assessment.
• 1700-gallon underground storage tank (UST) decommissioning and excavation N of the NE end of the former A & B Building;
• East/West transformer pad excavation; and
• South parking area excavation.
A total of 224.75 tons of contaminated soil were removed from the site and transported to the OIT Inc. Moose Creek facility for disposal and treatment by thermal remediation.
Analytical data indicate that contaminated soil remains in place at the top of the groundwater smear zone in the north and west side walls (10.75’ below ground surface(bgs)) and the south side and the middle (11.25’bgs) of the 1700-gallon UST excavation. Analytical results confirm that contaminant concentrations in the smear zone soil are above ADEC soil cleanup levels for benzene, toluene, ethylbenzene, xylenes, gasoline range organics (GRO), diesel range organics (DRO), 1-methylnapthalene and 2-methylnapthalene. Additional excavation into the groundwater and smear zone was not undertaken due to the potential for collapsing the sidewalls of the excavation. The horizontal and vertical extents of contamination in the smear zone were not delineated.
Data indicate that all analytical sample results from soil remaining in place at the East Transformer Pad, West Transformer Pad, and South Parking Lot Excavation contaminated area site were below ADEC soil cleanup levels for all tested analytes.
All structures had been razed from the site in preparation for future road realignment activities.
There are no documents for this site report.