Change Order 2 Thomco Construction

Project: Shore Avenue Storm Water Outfall Improvements Project Change Order No.2 Change Order Effective Date: May 11, 2016 Existing Item#60 - Crushed Surfacing Top Course. The use of crushed surfacing top course was deleted during street reconstruction and crushed surfacing base course was used instead. Existing Item#61 - Crushed Surfacing Base Course. Additional tons of crushed surfacing base course were used, in-lieu-of use of crushed surfacing top course, as the crushed surfacing base course provides a more structural roadway section. Additionally a full curb to curb street surfacing replacement approach,verses trench patching approach, resulted in the need of additional tons of crushed surfacing base course. Existing Item#62 -HMA Class 1/2-inch PG 64-22. Additional tons of HMA Class %2-inch PG 64-22 were used as a result of the full street restoration approach verses the trench patch approach. Existing Item#63 -Planing Bituminous Pavement. This bid item is being deleted as a result of the ground sloughing of the existing native soils during trench excavation, left minimal areas for planing of bituminous pavement. The planing of bituminous pavement which was completed on the project was paid for under the force account bid item. Existing Item#64 -Temporary Pavement Patch.No temporary pavement patching was completed during the course of this project. Existing Item#76—Gravel Borrow Including Haul. Additional tons of gravel borrow including haul were required to complete the trench backfilling due to the changed conditions encountered with sloughing soils and the need to remove these unsuitable soils during trench excavation and backfill. Existing Item#77 -Gravel Backfill for Foundations Class A. This bid item was not used during construction of the project. Existing Item#79 - Cleanout. This bid item was not used during construction of the project. Existing Item#82 -Extruded Cement Concrete Curb. This bid item was not used during construction of the project. New Item#201 —Costs for Initial Changed Conditions Notice. Between Lot No. 4 and 33rd Avenue West along Shore Avenue,the new storm trench followed alongside the existing sanitary sewer trench. The sanitary sewer trench was backfilled with unsuitable silty material, which when exposed to the unusual wet weather during the time of excavation to install new storm sewer, became unstable and sloughed into contractors storm sewer trench line, requiring it to be removed and replaced with new suitable gravel borrow material. This cost is to reimburse the contractor for the added labor and equipment costs to remove, load out, haul, and disposal of this unsuitable material. New Item #202—Additional Restoration Work,Lot 4 to 33rd Ave. W. This item pays for the installation of asphalt treated base material from City's Lot No. 4 to 33rd Ave West, demo of additional concrete and concrete curbs, demo of additional asphalt to approximate full roadway width, removal of additional spoils,prep of additional subgrade areas to receive asphalt treated base, replacement of existing damaged exposed aggregate concrete panels and driveway approaches and concrete curbs. Page 6 of 7