2007/07/25 Council Agenda Packet

4 Project: Biosolids and Back Wash Solids Removal Change Order: 9 Change Order Effective Date: July 27,2007 Exhibit A—Description of Changed Work In 2002, the City and our Contractor(Synagro)entered into a multi year, multi phase, Biosolids and Backwash Solids Removal Project. All three(3) Phases of the project are complete. This Change Order adds costs associated with down time caused by City owned equipment for the final phase of the project(Phase III). Additionally, this Change Order modifies a previous Change Order that incorrectly added sales tax to the total contract amount and correctly details the total sales tax to be paid on all three Phases of the project. These items are detailed below and result in a net deductive change of$178,257.46 1. Item being added by this Change Order The City owns a dredge for removing backwash solids at the Water Filtration Plant and was available, by this Contract, for Contractor use. The dredge had mechanical problems (hydraulic line leaks and fitting failures) on 3 separate occasions that caused the project to temporarily shut down while repairs were being made. The 3 shut downs totaled 60 hours. Synagro has requested reimbursement for their lost production costs(equipment and labor)during the 60 hours of shut down time of$15,608.59. This item results in an increase of$15,608.59. 2. Item being modified by this Change Order Change Order#7 correctly identified that sales tax will be paid as part of this project. However, the City's Change Order form indicates "Contract Price (exclusive of Wash. State Sales Tax)". The sales tax amount was not to be shown in the amounts for Change Order#7. Change Order#7's"Total Contract Price including this Change Order" line item incorrectly added the sales tax amount of$193,866.05 to the Contract total. This Change Order#9 will deduct this sales tax amount previously incorrectly added. I. °h Exhibit A Page 3 of 4