02-26-2018 BPU RPT 12 - Laserfiche WebLink

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RIVERSIDE PUBLIC UTILITIES Board Memorandum BOARD OF PUBLIC UTILITIESDATE: FEBUARY 26, 2018 ITEM NO:12 SUBJECT:MAGNOLIA AVENUE TECHITE PIPE AND PRESSURE REDUCING STATION REPLACEMENT PROJECT – SUPPLEMENTAL APPROPRIATION IN THE AMOUNT OF $5,216,000 ISSUES: Recommend that the City Council approve a supplemental appropriationfor the design and construction of the Magnolia Avenue Techite Pipe and Pressure Reducing Station Replacement Projectin the amount of $5,216,000. RECOMMENDATIONS: That the Board of Public Utilitiesrecommend that the City Council: 1.Authorizea supplemental appropriation in the amount of $5,216,000 from the Water Fund Balance to fundthe design and construction of the Magnolia Avenue Techite Pipe and Pressure Reducing Station Replacement Project; and 2.Appropriate expenditures in the amount of $4,646,000 to the Public Utilities’ Transmission Mains Account No. 6230000-470735for pipeline construction, andin the amount of $570,000 to the Public Utilities’ Facility Rehabilitation Account No. 6230000-470803 for the design and construction of the pressure reducing station. BACKGROUND: Techite pipe consists of a composite material made of fiberglass, polyester resin and sand which has a tendency to become extremely fragile during operation, resulting in an increased frequency of breaks and leaks. The City of Riverside Public Utilities Department’s (RPU’s) Water Operations staff has experienced breakage problems associated with Techite pipeline in the past. Many water agencies in California and elsewhere have also experienced catastrophic failures of Techite pipes that have led to the interruption of water supply and wastewater conveyance.Due to the poor performance of this product, RPU has begun replacing segments of Techite pipe with steel cement mortar-lined and coated (CML&C) pipeline. Currently there remains approximately 4.4 miles of Techite pipeline within RPU’s water system. The Public Works Department (PW) is scheduledto construct a street improvement project along Magnolia Avenue between Buchanan Street and Tyler Street whichwill entail modifications to the center medians to accommodate a third traffic lane in each direction; installation of new curb, gutter, sidewalk and asphalt pavement at various places; and modifications to the traffic signals and existing storm drain facilities. Page 175