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RIVERSIDE PUBLIC UTILITIES Board Memorandum Pua11C Urtltrlt5 BOARD OF PUBLIC UTILITIES DATE: October 15, 2010 ITEM NO: 4 SUBJECT: CONSTRUCTION OF THE RANDOLF STREET - RUTLAND AVENUE 8-INCH WATER DISTRIBUTION AMAIN REPLACEMENT PROJECT ISSUE: That the Board of Public Utilities consider approval of the capital expenditure in the amount of$160,500 to construct the Randolf Street- Rutland Avenue 8-Inch Water Distribution Main Replacement Project. RECOMMENDATION: That the Board of Public Utilities approve the capital expenditure of$160,560 for Work Order No. 1104234,which includes all design and construction costs for the Randolf Street- Rutland Avenue 8-Inch Water Distribution Main Replacement Project. BACKGROUND: The construction of the Randolf Street-Rutland Avenue 8-Inch Water Distribution Main Replacement Project is part of the on-going water main replacement program. This section of the street has experienced several leaks as well. The work%+rill generally entail the construction of approximately 495 linear feet of eight-inch ductile iron pipe,one fire hydrant,and reconnect to seven existing water services within Rutland Avenue and Randolf Street as shown on the attached project site map. The work identified will be constructed by the Water Division's field forces. Once the new water pipelines are installed, R P U will be responsible for standard trench repaving per the Public Works(PW)standard. Near the end of pipeline construction staff will solicit paving bids. A budgetary estimate for the paving work has been included in this authorization. As the paving work is estimated to be $35,000, Board approval is not required for the award of a paving contract. Board approval will be required if the cost of the paving contract exceeds $50,000. Basis of Design The project adheres to RPU's adopted design criteria for network pipelines, which specifies a maximum design velocity of six feet per second at peak hour demands (Ref. 2005 Water Master Plan, Table 7-1). The water pipelines for this project were engineered for ductile iron pipe, as this is RPU`s standard design practice for potable water distribution pipelines sized 12-inches in diameter or smaller. FISCAL IMPACT- The total capital expenditure for Work Order No. 1104234 is estimated to be $160,500 which includes all design and construction costs necessary to perform the work, as summarized in the following table: