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ITEM: AUTHORIZATION TO 1) EXECUTE A GMP AMENDMENT FOR THE WATER TREATMENT PLANT (WTP) RAW WATER MAIN INTERCONNECT AND REPLACEMENT PROJECT AND 2) EXECUTE A TASK ORDER FOR CONSTRUCTION PHASE SERVICES FOR THE WATER TREATMENT PLANT (WTP) RAW WATER MAIN INTERCONNECT AND REPLACEMENT PROJECT
REQUEST: Authorization to 1) Execute a GMP Amendment to Wharton-Smith, Inc. for the Water Treatment Plant (WTP) Raw Water Main Interconnect and Replacement Project at a cost of $847,230.86 and 2) Execute a task order with Kimley-Horn and Associates, Inc. for construction phase services for the Water Treatment Plant (WTP) Raw Water Main Interconnect and Replacement Project in the amount of $21,442.00.
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EXPLANATION: 1) Pursuant to RFQ# 202113, on May 11, 2021, the Village Council awarded a continuing Construction Manager at Risk (CMAR) contract to Wharton-Smith, Inc. Staff is seeking authorization to issue an Amendment, providing a Guaranteed Maximum Price for the Water Treatment Plant (WTP) Raw Water Main Interconnect and Replacement Project in the amount of $847,230.86 (Base Bid + Alternate) which includes $30,000.00 (Base Bid + Alternate) in owner-controlled contingencies.
The Village currently operates three separate wellfields, with the southern wellfield feeding the existing lime softening treatment plant. In order to facilitate the Village's transition to all-membrane treatment, the water from the lime wellfield must be diverted to the membrane plant. The Village will accomplish this with the construction of an interconnect in the raw water piping that will combine the north, south, and east wellfields and allow the Utility to divert flow to the membrane plant as well as allow for operational flexibility in the wellfields. The design will also include provisions to maintain the desired water pressure for the lime plant and the membrane plant. Concurrently with the construction of the interconnect, the Utility is proposing to construct a bid alternate item fo...
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