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REQUEST FOR COUNCIL ACTION CITY COUNCIL MEETING DATE: DECEMBER 2, 2014 TITLE: AWARD CONTRACT FOR 17TH WATER MAIN IMPROVEMENTS: STREET TO BROADWAY (PROJECT 116416) (STRATEGIC PLAN NO. 6, 1, B) CITY WANAGER RECOMMENDED ACTION CLERK OF COUNCIL USE ONLY: APPROVED DEC 2 2014 STREET Li As Recommended) o?,A BRISTOL E] As Amended ❑ Ordinance on 1" Reading ❑ Ordinance on 2 n Reading ❑ Implementing Resolution ❑ Set Public Hearing For CONTINUED TO FILE NUMBER Award a contract to Paulus Engineering, Inc., the lowest responsible bidder, for the construction of the 17th Street Water Main Improvements, Bristol Street to Broadway, in accordance with the base bid in the amount of $1,593,540 and a contingency of $239,031 for total amount not to exceed $1,832,571. 2. Approve the Cost Analysis for a total estimated project delivery cost of $2,071,602. DISCUSSION The existing 10 -inch diameter cast iron water main on 17th Street was installed in the 1930's and has begun to experience a number of breaks and leaks. Staff monitors the condition of water main pipelines by assessing critical factors such as age, history of breaks, size, location, and system redundancy to determine the priority of replacement needs. Based on an analysis of these factors, the water main on 17th Street between Bristol Street and Broadway has been identified as the highest priority for replacement due to its high probability of failure and significant consequences should a failure occur. Prior to advertising the project for bids, staff considered the impacts of construction on businesses and regional traffic. A vicinity map in Exhibit 1 shows the relative location of the water main on 17th Street to other major city streets. As a result, the project scope was developed to include the option and flexibility to perform construction during nighttime hours as a base bid, along with the option to perform the work during standard daytime hours. Staff recommends that the contract be awarded based on nighttime work. If nighttime work is performed, all vehicle travel lanes would be open during the daytime, allowing access to businesses, and would not interfere with critical peak morning and evening commutes. Working hours for the construction would be 7:00 p.m. to 5:00 a.m. Nighttime construction would adhere to the City's noise ordinance at all times; nonetheless, staff will require that noisier construction activities be limited to before 10:00 p.m.