Agenda - Council - 05/23/2017 - Laserfiche WebLink

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lour 1111.1siion: To work together to reiposihty grow our community, and to provide quality, coat -effective, and efficient government ierrlcas. CC Regular Session 7. 3. Meeting Date: 05/23/2017 By: Bruce Westby, Engineering/Public Works Information Title: Adopt Resolution #17-05-118 Approving Plans and Specifications and Authorizing Advertisements for Bids for Improvement Project #17-03, 2017 Crackseal and Sealcoat Improvements Purpose/Background: Purpose: The purpose of this case is to adopt Resolution #17-05-118 approving plans and specifications and authorizing advertisements for bids for Improvement Project #17-03, 2017 Crackseal and Sealcoat Improvements. Background: As part of the city's long-term Street Maintenance Program, various city streets receive crackseal and sealcoat improvements each year to help maximize the life expectancy of their pavement sections. Cracksealing streets prevents stormwater runoff from seeping through cracks in the pavement and joints between the pavement and concrete curb and gutter and/or utility castings. This reduces future pavement damage due to wet subgrade soils, especially during freeze -thaw cycles. Sealcoating streets protects pavement from the negative effects of stormwater runoff, ultraviolet rays from the sun, and oil -based products deposited on the pavement by vehicles. Plan sheets for Improvement Project #17-03, 2017 Crackseal and Sealcoat Improvements were prepared in-house and are attached for reference. Plans call for approximately 0.24 miles of City streets to receive crackseal improvements, and approximately 13.41 miles of streets to receive crackseal and sealcoat improvements. Streets proposed to receive crackseal and sealcoat improvements in 2017 were selected by City staff based on various criteria including their Pavement and Surface Evaluation Rating, their previous maintenance histories, the project scope, and other less tangible criteria. Plans include a base bid plus 4 alternate bids. This approach was discussed previously with Council. The intent of adding alternate bids is to allow the City to accept a base bid plus some combination of alternate bids such that most or all of the allocated budget for this work can be spent without needing to develop a second crackseal and sealcoat project after the first project is bid, which is inefficient. All streets colored magenta on the attached plans are included in the base bid, while streets colored orange are included in the 4 alternate bids identified as alternates A through D on their respective plan sheets. Alternate bids are ordered based on the recommendations of staff such that alternate A should be approved first, followed by alternate B, then alternate C, and lastly alternate D. Staff is not proposing to fog seal any streets this year. Though numerous other cities fog seal over new sealcoat applications due to reported benefits including that the pavement looks newer longer, that the life of the sealcoat application is extended due to reduced loss of rock over time, and that they receive less complaints about the