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INTER -OFFICE MEMORANDUM <br />DEPARTMENT OF PUBLIC WORKS <br />DIVISION OF ENVIRONMENTAL SERVICES <br />TO: Members of the Board of Public Works <br />Michael Schmidt, Assistant City Attorney Public Works <br />Theresa Heffner, Clerk of the Board of Public Works <br />FROM: Jacob M. Klosinski, P.E., Assistant City Engineer <br />SUBJECT: Agenda Request — Bid Opening <br />Wastewater Treatment Plant WAS Thickening Improvements <br />Project No. 123-031 B / DFO PROJ00000435 <br />DATE: April 15, 2025 <br />The Department of Public Works, Division of Engineering, and Division of Wastewater request <br />the Board of Public Works open Public Bids for Project No. 123-031 B Wastewater Treatment <br />Plant WAS Thickening Improvements at the Board of Public Works Regular Meeting on April <br />22, 2025. <br />Project 123-031 B is the second phase of the subject project and the scope of work is focused <br />on interior building and process equipment replacements at Building #6 at the Wastewater <br />Treatment Plant. The three (3) existing Dissolved Air Floatation (DAF) Units will be replaced <br />with two (2) Gravity Belt Thickeners (one duty and one standby). In addition, SCADA <br />instrumentation, process pipe improvements, electrical modifications, and a new polymer feed <br />system will be installed to complete the new system installation. Many different forms of waste <br />activated sludge thickening technologies were evaluated during design, and the choice do <br />change from Dissolved Air Floatation Units to Gravity Belt Thickeners was driven by both cost <br />and operation and maintenance considerations. <br />Equipment for this project will have a long lead time and construction activities are expected to <br />begin in Q3/Q4-2025 with completion in Q2-2026. <br />Bid Opening and Tentative Award Schedule: <br />• April 22, 2025 Bid Opening <br />• May 13 or May 27, 2025 Tentative Date(s) for Project Award <br />For questions regarding the subject Agenda Request or project scope of work, contact <br />Jacob M. Klosinski (Ext. 9496) at the Division of Engineering. <br />