Title
Resolution to Approve Amendment 1 to the Professional Services Agreement with Atlas Technical Consultants LLC for Additional Environmental Services at 2000 S. Industrial Highway and to Appropriate Funding in the Amount of $100,000.00 from the Water Supply System Fund Balance (8 Votes Required)
Memorandum
During an excavation for a new electrical service at 2000 S. Industrial Highway, an unknown underground storage tank (UST) was identified. Under an emergency purchase order authorization approved by City Council on June 7, 2021, Atlas Technical Consultants LLC (ATC) was retained to identify and remove the tank and take the required soils samples to determine if a release had occurred. The tank was an orphaned, 1,000-gallon heating oil tank that had leaked and contaminated the surrounding soils. The tank was pumped out, cleaned and removed and the site was covered pending further activity. Heating oil tanks are regulated by the State of Michigan under Part 201.
Based on the soil sample test results, a remedial investigation (RI) was required under Part 201 and City Council approved a Professional Services Agreement, dated December 6, 2021, with ATC for that work. Soil borings, groundwater samples and soil gas samples were taken over a period to determine the scope of contamination from the heating oil.
This RI work has been completed and provided delineation of the soils that need to be removed as part of a remedial action plan. As the contamination is near the building, not all the contaminated soils can be removed without impacting the structural integrity of the building. This also requires additional verification efforts to determine if the contamination has migrated under or to the other side of the building. These efforts include sub-slab penetrations to take soil samples and soil gas samples. Monitoring wells will be placed on the north side of the building as well. All contaminated soils and/or groundwater removed during the excavation...
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