Agenda - Council - 07/25/2017 - Laserfiche WebLink

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The temporary street sections are proposed to be improved in 2018 after utilities are extended in 2017. Constructing trunk utilities along Bunker Lake Boulevard will allow the south end of the Riverstone development to be served with utilities. Phase IA in the attached Future Business Park Proposal addresses this. Utilities must be extended north along Puma Street to serve additional homes in the Riverstone development. Phase 1B in the attached Future Business Park Proposal addresses this work. As discussed in an earlier case, an Assessment Agreement is proposed to be executed between the City and the developers of adjacent properties. This will allow the City to recover 40% of project costs to extend utilities along Puma Street. In March of 2017, Bolton Menk updated the Future Business Park report to include estimated costs for extending trunk utilities along Puma Street. A copy of the updated report is attached for reference. The report identifies estimated costs to extend trunk watermain along Phase 1B of Puma Street at $182,000, and to extend trunk sanitary sewer at $545,000. These costs include 30% contingency and indirect costs. Capstone Homes proposes to begin construction of the Riverstone development on July 31, 2017. If Council orders preparation of plans and specifications this evening, construction of trunk utilities should be complete by mid -December, barely meeting the developers desired utility service schedule allowing Certificates of Occupancy to be issued for homes in the central area of the Riverstone development. Attached is Figure 1 showing the trunk utilities extension project location and scope. The Public Works Committee was not willing to recommend Council approval of ordering plans and specifications without having financial securities in place first given the uncertain status of the Riverstone development at the time. If the Assessment Agreement were approved, the required financial securities would be in place, removing this concern. Notification: No notifications are necessary for this case. Observations/Alternatives: Observations: Staff will work with adjacent property owners along Puma Street during development of plans and specifications to properly design all utility service stubs. Staff proposes to use aggregate base as a temporary street surface on Puma Street over the winter months since the street typically has low traffic volumes and is proposed to be reconstructed next spring/summer. Alternatives: Alternative #1 — Motion to recommend adoption of Resolution #17-07-182 ordering Plans and Specifications for Improvement Project #17-10, Puma Street Utility Extensions. Alternative #2 — Motion denying adoption of Resolution #17-07-182 at this time. Funding Source: City Staff proposes to utilize Bolton & Menk to prepare plans and specifications. An estimate of their proposed engineering fees for this work is $104,780. See attached proposal dated June 20, 2017. Please note the schedule is now pushed out one -month. Bolton & Menk's estimated costs for extending utilities along Puma Street with Phase 1B is $727,000. This does not include costs to restore the street in a temporary manner over the winter, which is estimated to cost $50,000.