Request to Advertise - WWTP Raw Sewage Pump No 2 Rehabilitation Project No 118-020

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INTER -OFFICE MEMORANDUM DEPARTMENT OF PUBLIC WORKS DIVISION OF UTILITIES TO: Members of the Board of Public Works Eric Horvath, Director of Public Works Kara Boyles, City Engineer Clara McDaniels, Board of Public Works Attorney FROM: Al Greek, Director of Utilities Jacob M. Klosinski, Assistant City Engineer SUBJECT: Agenda Request Form — Request to Advertise AeQQ of s/ of Puflu ol't v 0., , 118-020 WWTP Raw Sewage Pump No. 2 Rehabilitation M TYpwµ DATE: November 5, 2018 uoo�oiom �immihu ��uwoioimuoimmom�uimm�i�imuumwww�wmwom�i�mmu�m�u �� mmrooimiomowi�o� iu�oWo�u�wwwiuwwwiu The Department of Public Works Division of Utilities is requesting the Board of Public Works approval of the request to advertise for the receipt of bids for Project No. 118-020 Wastewater Treatment Plant Raw Sewage Pump No. 2 Rehabilitation. Background Over time Raw Sewage Pump No. 2 has exhibited a loss in pumping capacity. The current pump and impeller is rated for 50 MGD. Over recent years full output of the pump has varied between 45 — 48 MGD depending on the head conditions at the adjacent wet well and incoming sewage flow rates. Both Raw Sewage Pump No. 1 and Pump No. 3 are capable of 50 - 55 MGD flow rates. They were both rebuilt in recent years and each has a larger impeller. A similar rehabilitation is scheduled for Raw Sewage Pump No. 2. Raw Sewage Pump No. 2 was recently inspected and overall, the condition of the volute is in good to fair condition. The pump does not require a complete replacement but it does require rehabilitation so it can continue to provide the pumping capacity needed for normal permitted flows. This project is part of the Wastewater Treatment Plant's capital budget for 2018. This project will be bid early in the fourth quarter with the intent to award the project prior to year's end. Bidding Schedule Advertise: November 9, 2018 and November 16, 2018 Bid Opening: November 27, 2018 Bid Award: December 11, 2018 The funding source will be Utilities, Sewage Works Capital, Account (642-0630-415-43-66). If there are any questions regarding the subject project, please contact Al Greek (Ext. 4210) at the Division of Utilities or Jacob M. Klosinski (Ext. 9496) at the Division of Engineering.