Agenda - Council - 05/26/2020 - Laserfiche WebLink

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CC Regular Session 8. 5. Meeting Date: 05/26/2020 By: Bruce Westby, Engineering/Public Works Information Title: Adopt Resolution #20-106 Approving Plans and Specifications and Authorizing Advertisements for Bids for Puma Street Improvements, Improvement Project #20-04 Purpose/Background: Purpose: The purpose of this case is to consider adopting Resolution #20-106 approving plans and specifications and authorizing advertisements for bids for Puma Street Improvements, Improvement Project #20-04. Background: Existing Infrastructure The improvements proposed with this project are the last in a series of improvement projects providing street, trail and trunk utility improvements to serve numerous commercial and residential developments in the general area. In 2006, Bunker Lake Boulevard was improved west of Armstrong Boulevard. The easterly 2,650 feet or so was constructed with trunk 18-inch polyvinyl chloride (PVC) sanitary sewer and 16-inch ductile iron pipe (DIP) watermain under a permanent bituminous pavement section. The westerly 1,400 feet or so of Bunker Lake Boulevard to Puma Street, as well as all of Puma Street between Bunker Lake Boulevard and Alpine Drive, was constructed without trunk utilities and only a temporary pavement section generally consisting of 3 inches of aggregate base under 2 inches of bituminous pavement. Based on future demand, trunk utilities were ultimately proposed to be extended to and along Puma Street, after which the temporary pavement sections would be replaced with permanent pavement sections. In the fall of 2017, approximately 1,400 linear feet of municipal trunk utility extension improvements were constructed along the west end of Bunker Lake Boulevard to Puma Street. These trunk utilities were required to serve portions of the new Riverstone residential development west of Puma Street, as well as a portion of the new Bunker Lake Industrial Park development south of Bunker Lake Boulevard. In late 2017 through early 2018, trunk utility improvements were extended along Puma Street, north of Bunker Lake Boulevard. These utility improvements were required to serve a majority of the Riverstone residential development, future commercial and residential development east of Puma Street, plus some undeveloped land in the Northfork development, west of the Riverstone development. These development areas are all designated as municipal urban service areas (MUSA) thereby requiring service by City sewer and water. In the summer/fall of 2018, permanent street and trail improvements were constructed on the sections of Bunker Lake Boulevard and Puma Street where trunk utility improvements were constructed. Proposed Improvements The proposed Puma Street Improvements are being driven by two proposed residential developments, one on each side of Puma Street south of Alpine Drive, including Alpha Development by AKM Farm/Paxmar on the east side of Puma Street, and Riverstone 4th Addition by Capstone Homes on the west side. Figures showing the locations and scope of both developments are attached to this case. This spring Capstone Homes began development of Riverstone 4th Addition, which is located on the north half of