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STAFF REPORT <br />DATE: February 20, 2024 <br /> CONSENT <br /> <br />AGENDA ITEM: Approve Plans and Specifications and Order Advertisement for Bids for the <br />Stillwater Boulevard (CSAH 14) Trunk Watermain Improvements <br />SUBMITTED BY: Jack Griffin, City Engineer <br />REVIEWED BY: Clark Schroeder, Interim City Administrator Clarissa Hadler, Finance Director Marty Powers, Public Works Director <br /> Chad Isakson, Assistant City Engineer <br /> <br /> <br />ISSUE BEFORE COUNCIL: Should the City Council approve the Plans and Specifications and Order <br />the Advertisement for Bids for the Stillwater Boulevard (CSAH 14) Trunk Watermain Improvements? <br /> <br />BACKGROUND: In accordance with the City’s Capital Improvement Plan, the extension of a 12-inch <br />trunk watermain has been identified for construction in 2024. The proposed watermain will extend along <br />segments of Stillwater Boulevard (CSAH 14) and Stillwater Lane from Jamaca Court to Klondike Avenue, <br />and will connect the existing Jamaca Avenue trunk watermain to the watermain network in the Village area <br />(see attached Project Exhibit). <br /> <br />The project will construct a critical trunk water transmission line that completes a primary watermain loop <br />within the intermediate pressure zone, and provides a secondary transmission main to ensure a continued <br />water supply under conditions of a trunk watermain repair/break. The trunk watermain improvement is <br />also needed to meet the growing water supply delivery demands for the newly connected neighborhoods <br />outside of the City growth areas, and was identified as an important water system improvement in the Clean <br />Drinking Water Supply Plan (CDWSP) recently completed for the 3M Settlement Funds. The project will <br />provide new water service stubs to 10 residential properties, 2 of which have private well advisories. <br /> <br />PROPOSAL DETAILS/ANALYSIS: The plans and specifications have been completed for the <br />improvements and are ready to be advertised for contractor bids. A bid date has been scheduled for March <br />19, 2024. Once received, bids will be reviewed by staff with results to be presented to council on April 2, <br />2024 to consider awarding a construction contract. <br /> <br />The overall scope of the project remains unchanged from the approved preliminary design, however the <br />watermain installation and roadway improvement methods have been detailed and designed in accordance <br />with the findings of the geotechnical investigations. The western segment of watermain will replace the <br />existing 4-inch pipe through open cut trenching. The pipe will be replaced in its current location in the north <br />boulevard of the County roadway. The remaining watermain segments will be installed through directional <br />drilling along the shoulder of Stillwater Boulevard and beneath the roadway of Stillwater Lane. <br /> <br />Stillwater Lane roadway improvements will now include a full reconstruction rather than being reclaimed <br />as originally proposed. The geotechnical investigation revealed an old concrete roadway beneath the <br />existing bituminous surface making the original reclaim unfeasible. The street will be reconstructed to <br />maintain its existing width of 22-ft. and approximate grade and will include new ribbon concrete curb and <br />gutter. The post construction “No Parking” signage plan will prohibit parking on both sides of the street. <br />FISCAL IMPACT: The project will be substantially funded through the MPCA Grant in the amount of <br />$3,140,000 with a portion of funding that may be necessary through the water enterprise fund. No special