Change Order No 1 - Monroe Circle Demolition Proj No. 123-048 - Green Demolition

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Page 1 of 1 INTER-OFFICE MEMORANDUM DEPARTMENT OF PUBLIC WORKS DIVISION OF ENGINEERING TO: Theresa Heffner, Clerk Board of Public Works FROM: Zach Hurst, PE, Sr. Project Engineer SUBJECT: Change Order No. 1 - Project No. 123-048 Monroe Circle Demolition DATE: 09/15/2023 During demolition of the existing townhomes at Monroe Circle, it was discovered that the concrete foundation slabs were cast on top of transite pipe, which is an asbestos containing material. The bid specifications noted that this was a possibility, but no removal quantity was included, nor any contingency added to the contract. The transite pipe acted as air ducts, traveling in all directions underneath the slab, and was also cast monolithically with the foundation slab, meaning that separating the pipe from the slab was not possible. To this end, the entire foundation slabs needed to be treated as hazardous material and disposed of accordingly. It was not possible to determine the extent of the transite pipe until the buildings were removed and the foundation slabs uncovered. This was an unforeseen circumstance. The cost for removal is $450,000: 90,000 cubic feet of foundation slab, removed at $5 per cubic foot. The percentage change to the contract for unforeseen conditions is 52.8%. The added tree removal, which is a $5,000 scope addition, is a 0.6% change to the contract.