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CITY COUNCIL AGENDA ITEM 6D STAFF ORIGINATOR: Diane Hankee PE, City Engineer MEETING DATE: June 24. 2019 TOPIC: Consider Resolution No. 19-80, Approving Change Order No. 1, 2019 Mill and Overlay Project VOTE REQUIRED: 3/5 INTRODUCTION Staff is requesting council approval of Change Order No. 1 for the 2019 Mill and Overlay Project. BACKGROUND On April 8, 2019. the City Council awarded the bid for the 2019 Mill and Overlay Project to North Valley, Inc. in the amount of $546,809.69. Construction of the project began in early May. Shortly after the bituminous base course was installed, it was discovered that two watermain services and a main line valve began to leak. Observations during the watermain repairs identified corroded bolts at the gate valves. Final paving has been delayed due to the watermain concerns within the project area. At the June 3, 2019, work session WSB presented a memorandum detailing the conclusions from the watermain repairs and recommendations for moving forward with the project. It is recommended to replace the gate valve bolts and to adjust the paving specification on vibratory equipment to reduce the impact on the service connections. During the work on the gate valves, we will evaluate the ability to achieve compaction due to water table and soil type, as it relates to the potential settlement. We will then make a recommendation to pave the wear course (second lift of bituminous) towards mid -November, 2019, or to postpone into 2020 to allow additional time for possible settlement. Roadway prep work would be completed to prepare the site for the winter plow season if postponed. Change Order No. 1 to replace the bolts on the gate valves and appurtenant work is in the amount of $149,100.00. The bolt replacement on this project will be funded through the City's Utility Fund. The 2019 Mill and Overlay Project contract with North Valley, Inc. with Change Order No. 1 would be increased to $695,909.69. WSB and Associates has submitted a proposal to complete the construction services for the gate valve bolt replacement and appurtenant work in the amount of $11,064.00. RECOMMENDATION Staff is recommending approval of Resolution No. 19-80 for Change Order No. 1 in the amount of $149,100.00 for the 2019 Mill and Overlay Project and construction services in the amount of $11,064.00.