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REQUEST FOR COUNCIL ACTION Date: 12/10/12 Item No.: 12.a Department Approval City Manager Approval Item Description: Approve Resolution Award ing Bid for Watermain Rehabilitation Project Page 1 of 3 B ACKGROUND 1 The majority of the city’s water main pipes we re originally constructe d in the 1950’s and 1960’s, 2 utilizing cast iron pipe. In the 1970’s, the pipe ma terials used in constr uction changed from cast 3 iron to ductile iron. This older infrastructure is nearing the end of its useful life. The aging pipe 4 is becoming more brittle and prone to water main breaks. There is an average of 30 water main 5 breaks in Roseville every year. As the pipes c ontinue to age, this number will continue to 6 increase. Watermain breaks are a disruption to service and are inconvenient to residents and 7 potentially costly to area businesses. 8 New technologies in the industry have allowed c ities to begin evaluating trenchless methods of 9 water main pipe rehabilitation as a viable alte rnative to open-cut pipe replacement for some 10 projects. This technology essentially installs a new pipe inside the existing water main without 11 digging up city streets, which results in minimal disruption to residents and the traveling public 12 during construction. The new pipe is a structural improvement that can extend the service life of 13 the water main by 50 years. We expect that this will eventually become an annual project for the 14 foreseeable future as our infrastructure continues to age. 15 The 2012 and 2013 Capital Improvement Plans incl ude funding for a water main rehabilitation 16 program to extend the life of our water mains. Staff has identified two segments in the system 17 that have a significant history of watermain break s to include in this rehabilitation project. 18 Transit Avenue, from Western Avenue to Rice Street, has had 10 watermain breaks since 2000, 19 and Rice Street, from south of Transit Avenue to County Road C-2, has had 8 watermain breaks 20 since 2000. 21 Plans and specifications were prepared in Oc tober 2012 for a watermain rehabilitation project 22 including these two segments. Contractors bid tw o different types of trenchless technologies on 23 this project. One is a cured in place pipe (CI PP) liner, which is similar to the liners used on 24 sanitary sewer lining projects. The other is a spray-on liner produced by 3M. Both methods are 25 National Sanitation Foundation (NSF) 61 approved for potable water systems. The NSF is an 26 independent, not for profit organization that cer tifies products that come into contact with 27 drinking water. The NSF has led the developmen t of the American National Standards for all 28 materials and products that treat or come in c ontact with drinking water to help protect public 29 health and the environment and minimize adverse health effects. Both methods also meet 30 American Water Works Association (AWWA) Class IV specifications as fully structural pipe. 31 Based on past practice, the City Council has awarded contracts to the lowest responsible bidder. 32 For this project, the apparent low bid is Veit & Company, Inc. of Rogers, Minnesota. The following 33 is a summary of bids received for this project: 34