Change Order No 20-PCA- WWTP Secondary Treatment Improvements Project No 114-053 - Thieneman Construction Inc

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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. 20 & Project Completion Affidavit Project No. 114-053: Wastewater Treatment Plant Secondary Treatment Improvements DATE: November 19, 2018 rouiNNWi010 The Division of Utilities is requesting the Board of Public Works approval of Change Order No. 20 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. 20 addresses the following changes: COP 123 — Revised Electrical Short Circuit Study Credit for scratched Panel Door at Dewatering Well #3 NET INCREASE FOR CHANGE ORDER NO. 20 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 $ 1,323.07 ($ 1,000.00) $ 323.07 $11,885,000.00 $ 2,001,597.91 $13,886,597.91 $ 323.07 $13,886,920.98 +0.003% +16.84% Time Extensions resulting from Change Order No. 18: Substantial Completion: 12 days Final Completion: 0 days Comments: Final Adjustment to Substantial Completion covers all adjustments related to the revision of the Short Circuit Study and delays related to the 2018 Flood Events. The funding sources for Change Order No. 20 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) at Division of Utilities or Jacob M. Klosinski (Ext. 9496) at the Division of Engineering.