Agenda - Council - 07/23/2024 - Laserfiche WebLink

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6. 19. CC Regular Session New Meeting Date: 07/23/2024 Primary Strategic Plan Initiative: Address infrastructure needs. Title: Adopt Resolution#24-207 Authorizing Requests for Quotes for Maintenance Project#24-57, 2024 Spray Patching Contracted Services Purpose/Background: Purpose: The purpose of this case is to adopt Resolution#24-207 authorizing Requests for Quotes for Maintenance Project #24-57, 2024 Spray Patching Contracted Services. Background: Numerous miles of City streets require pavement patching throughout the year, and pavement patching can be completed in many ways. Potholes have various depths and sizes and are patched accordingly using varying methods. Deeper potholes (in excess of 2-inches deep) are typically located sporadically and are typically patched by hand by City staff using cold mix in the winter and hot mix throughout the rest of the year. Shallower potholes (2-inches deep or less) are patched by hand by City staff if sporadically located. However, shallower potholes may cover a large surface area, often caused by surface stripping, in which case a mill and overlay may be the appropriate treatment, or spray patching may be the better option if the street is programmed for a pavement management program project in the near future and the goal is simply to provide a safe surface for drivers and pedestrians until the pavement management program project can be completed. Deep pothole patching generally involves removing debris and water from potholes deeper than 2-inches using compressed air, applying bituminous tack coat within the potholes,placing hot asphalt mix in the potholes,then compacting the hot mix. The patched potholes can be driven on immediately. Spray patching generally involves the use of a spray patching truck to clean debris and water from potholes 2-inches deep or less using compressed air, then applying a bituminous spray patch mix to the potholes. A fine layer of loose sand/rock chips is then applied to prevent transfer of the bituminous spray patch mix to vehicles that drive over the patch before it sets. The number of streets requiring pavement patching have grown significantly in recent years,resulting in Public Works staff spending more and more time patching potholes and less time completing other core duties. In 2023,the number of streets with significant numbers of potholes (deep and shallow) increased such that Public Works staff could only maintain a small portion of these streets. This was due to that winter's severe weather conditions,the age and composition of the pavement sections, as well as to not receiving regular proactive maintenance treatments over the life of the pavement sections. In 2023, over$1,000,000 was spent on pavement patching contracted services. In 2024,the City is again using contracted services to perform much of the pavement patching work across the City. This year the City will spend an estimated$665,000 for pavement patching contracted services. Attached is a plan identifying 0.91 miles of streets proposed to be spray patched in 2024. These streets are shown as red lines and are identified as areas 5 and 6. The streets shown as blue lines on the plan(areas 1 through 4) were previously patched using the"skim patching"method under project#24-55. The attached plan will be included in the Request for Quotes and contractors will provide a lump sum quote to spray patch the identified