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Board approves $187,202 in change orders for wastewater update project; staff expects a $60,000 offset
Summary
Two change orders totaling $187,202 were approved for the wastewater update project. Staff said the larger change order covers a relocated flame arrestor and additional monitoring devices; a $60,000 in-house cleaning credit will reduce net project cost.
The Port Washington Board of Public Works approved two construction change orders for the city’s wastewater update project totaling $53,907 and $133,295. Staff described the work as necessary corrections and safety-related additions discovered as the project progressed.
Dan, a wastewater staff member, told the board the $53,907 change order includes 11 smaller items — such as concrete grout repairs for a discovered crack after protective coating removal — and that seven of those items had already been completed to keep crews productive. Dan said those items were reviewed by the project engineer and judged reasonable.
The larger $133,295 change order focuses on work around the digester portion of the project. Dan said the city must relocate a flame arrestor outside the building, which requires excavation, a containment concrete structure and installation of a gas line. He also said roughly $40,000 of the amount relates to two cover-monitoring devices that were not identified during initial assessments of 35-year-old components.
Staff noted the project team expects to perform cleaning of a sludge-storage tank with in-house personnel and a contractor during a later phase, which will yield a roughly $60,000 credit to the project. The board’s approval authorizes the change orders to proceed and instructs staff to issue the change-order paperwork to the contractor, August Winters & Sons.
Cam moved and Alderman Gasper seconded the motion; it carried by voice vote.
Staff said a project contingency of roughly $550,000 remains for the overall $12 million project, and that contingencies and engineering oversight reduce the risk of cost surprises going forward.
