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Council told North Walnut lot excavation has uncovered 11 underground tanks; staff may reallocate up to $800,000 for remediation
Summary
Village engineer and staff reported unexpected buried tanks and contaminated soil at the North Walnut parking lot. Councilors were told the discovery could consume restoration funds and that options for the surface after remediation will be presented after bids return on April 9.
Village engineers reported new contamination discoveries at the North Walnut parking lot project, saying crews have located two additional underground tanks — increasing the total to 11 — and that removing contaminated soil will require reallocating funds originally slated for surface restoration.
Chris Rudishauser, the village engineer, described active excavation that has uncovered tank foundations, water intrusion requiring pumping, and gasoline-type contamination. He said crews are excavating to depths up to about 10–12 feet in places and are performing field confirmation sampling to guide the extent of removal. The licensed site remediation professional (LSRP) is receiving clean fill documentation from the quarry…
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