Agenda - Council - 05/24/2016 - 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. 9. Meeting Date: 05/24/2016 By: Bruce Westby, Engineering/Public Works Information Title: Adopt Resolution #16-05-086 Approving Plans and Specifications and Authorizing Bids for Improvement Project #16-00 Division A, Crackseal and Sealcoat Improvements Purpose/Background: Purpose: The purpose of this case is to adopt Resolution #16-05-086 approving plans and specifications and authorizing advertisements for bids for Improvement Project #16-00 Division A, Crackseal and Sealcoat Improvements. Background: As part of the city's long-term Street Maintenance Program, various city streets receive cracksealing and sealcoating improvements each year to help maximize the life expectancy of the street pavement sections. Cracksealing of streets prevents stormwater runoff from seeping through cracks in the pavement and through joints between the pavement and concrete curb and gutter and/or utility castings, reducing the potential for future pavement damage due to wet subgrade soils, especially as a result of freeze -thaw cycles. Sealcoating streets helps protect pavement from the negative effects of stormwater runoff, ultraviolet rays from the sun, and oil based by-products that are deposited on pavement surfaces by vehicles. City staff therefore prepared plans and specifications for the 2016 Crackseal and Sealcoat Improvements project which involves cracksealing and sealcoating 13.53 miles of municipal streets in various locations throughout the City. Attached is the plan sheet showing the locations of all streets proposed to receive crackseal and sealcoat improvements in 2016. Specifications are not attached but will be available for review at the Council meeting, if needed. Attached is a cost estimate for the proposed improvements, including cost breakouts for each street segment. As shown on page 1 of the estimate, Staff proposes to fog seal two areas this year; Ramsey Meadows 2nd Addition and the Fire Station 1 parking lot. A fog seal is a light application of a diluted slow -setting asphalt emulsion to the surface of an aged (oxidized) pavement surface. Fog seals are low-cost and are used to restore flexibility to an existing pavement surface. They may be able to temporarily postpone the need for a surface treatment or non-structural overlay. In Ramsey, fog sealing was completed on several streets last year on a trial basis to determine if benefits outweigh costs. Numerous other cities have completed fog sealing over sealcoat applications in recent years and have reported benefits including that the pavement looks newer for longer, that fog sealing extends the life of the sealcoat application due to reduced loss of seal coat rock over time, which also reduces the amount of rocks that make their way into garages, homes and businesses on tires and the bottoms of shoes. However, this spring Staff observed essentially identical amounts of loose rock on streets that were fog sealed versus streets that were not. It was also observed that fog sealed streets lost much of their "new street" look after one winter of wear. Staff therefore has not observed a short-term benefit to fog sealing over sealcoating