Agenda - Council - 08/27/2024 - Laserfiche WebLink

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6. 15. CC Regular Session New Meeting Date: 08/27/2024 Primary Strategic Plan Initiative: Address infrastructure needs. Title: Adopt Resolution#24-231 approving Change Order#3 for Halls Dover Acres Street Reconstructions, Improvement Project#24-02 Purpose/Background: Purpose: The purpose of this case is to adopt Resolution#24-231 approving Change Order#3 for Halls Dover Acres Street Reconstructions, Improvement Project#24-02. Background: Trunk Watermain Scope: Included in the Halls Dover Acres Street Reconstructions project is the extension of approximately 1,265 lineal feet of 12-inch trunk watermain between Potassium Street east of 157 th Lane and Sodium Way adjacent to Sunfish Lake Boulevard. This connection is included within the 10-year Capital Improvement Program and 20240 Comprehensive Plan. Revised Watermain Scope: At the July 9, 2024 City Council meeting, Council adopted Resolution#24-185 approving Change Order#2 for this project. The change order adjusted the trunk watermain route to continue the line down Sunfish Lake Boulevard, and connect at 155th Avenue/Sodium Street. At the time of the change order, staff s understanding was the line at 155th Avenue and Sunfish Lake Boulevard was an 8-inch line. The change order included reducing the 12-inch trunk watermain line down to 8-inch, and making an 8-inch wet tap into the existing line. A 12-inch line between this connection and Sodium Way would need to be considered in the future. During construction of the work included under Change Order#2, it was discovered the existing 12-inch line, which was thought to end at the intersection of Sodium Street and Sodium Way,remained 12-inch through the intersection of Sunfish Lake Boulevard and 155th Avenue/Sodium Street. This was not known previously due to the incorrect Alpine Acres as-built maps, and the reduction to 8-inches occurring under the west side of Sunfish Lake Boulevard,before the first valve to the west. In reaction, Change Order#3 kept the trunk line 12-inches and connected to the existing 12-inch line at 155th Avenue/Sodium Street, resulting in completion of the 12-inch loop,with future considerations no longer being required. Construction Impacts. Change Order#3 includes the cost for re-stocking the 8-inch wet tap and supplying the 12-inch wet tap. In today's manufacturing environment,watermain wet taps of this size are not kept on-hand and require special ordering to obtain. Notification: Notification is not required. Time Frame/Observations/Alternatives: