Change Order No 19 - WWTP Secondary Treatment Improvements Proj No 114-053 - Thieneman Construction

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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 Clara McDaniels, Board of Public Works Attorney FROM: Al Greek, Director of Utilities Jacob M. Klosinski, Assistant City Engineer SUBJECT: Agenda Request Form — Change Order No. 19 Project No. 114-053: Wastewater Treatment Plant Secondary Treatment Improvements DATE: May 22, 2018 The Division of Utilities is requesting the Board of Public Works approval of Change Order No. 19 for Project No. 114-053 Wastewater Treatment Plant Secondary Treatment Improvements. Refer to attached documents for supporting details for the subject work. Change Order No. 19 addresses the following changes: COP 113.2 -- Repair Grating at FC#1 COP 116.2 — Install 24" Blind Flange at Gallery #1 COP 118.1 — Aeration Deck Quality Adjustment and Repairs NET DECREASE FOR CHANGE ORDER NO. 19 ITEMS Original Contract Sum Net change by previously authorized change orders The contract sum prior to this change order By this change order, the project amount decreases by The new contract sum including this change order is This Change Order represents a total change of Total change for the entire project Time Extensions resulting from Change Order No. 18: Substantial Completion: Final Completion: $ 5,989.00 $ 5,519.00 $ 22,000.00 ($ 10,492.00) $11,885,000.00 $ 2,012,089.91 $13,897,089.91 ($ 10,492.00) $13,886,597.91 -0.09% +16,84% 0 days 0 days The funding sources for Change Order No. 19 shall be directed from the Utilities, Wastewater Capital Account (642-0630-415-43-66) as appropriate. If there are questions regarding the subject change order, please contact Al Greek (Ext. 4210) or Jacob M. Klosinski (Ext. 9496) at the Division of Utilities.