Approval of Change Order #19 – Boomerang Corp. – North Park Road Improvements Project — E-10

City of Tiffin - Iowa Change Order Details 52-7662-615 Description STP-U-7662(615)--70-52, Letting Date- December 17, 2024 Prime Contractor Boomerang Corp. 13225 Circle Dr Suite A, Anamosa, IA 52205 Anamosa, IA, IA 52205 Change Order 19 Status Pending Date Created 09/18/2026 Type Non-Substantial Summary Add items to address price adjustment on median pavement that experienced rain damage. Change Order Description 8280: Add item for 6200-5000041 {PRICE ADJUSTMENT} RAIN DAMAGED PORTLAND CEMENT CONCRETE PAVEMENT (BY GUIDE SCHEDULE - CONSTRUCTION MANUAL 2.53) Awarded Project Amount $5,458,891.91 Authorized Project Amount $5,586,976.68 Change Order Amount -$654.03 Revised Project Amount $5,586,322.65 B-Reason for Change Change Order Details: 09/23/2026 52-7662-615 Page 1 of 3