03-15-2013 BPU RPT 04 - Laserfiche WebLink

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W A T E R E N E R G Y RIVERSIDE PUBLIC UTILITIES Board Memorandum PUBLIC UTILITIES BOARD OF PUBLIC UTILITIES DATE: March 15, 2013 ITEM NO: 4 SUBJECT: CONSTRUCTION OF THE CASA BLANCA WATER SYSTEM PRESSURE IMPROVEMENTS PHASE 1 PROJECT—WORK ORDER NO. 1424632 ISSUE: The item for Board of Public Utilities consideration is approval of the capital expenditure in the amount of$885,000 to construct the Casa Blanca Water System Pressure Improvements Phase 1 Project. RECOMMENDATION: That the Board of Public Utilities approve the capital expenditure of $885,000 for Work Order No. 1024632 which includes all design, construction, paving, contract administration and construction contingency costs for the Casa Blanca Water System Pressure Improvements Phase 1 Project. BACKGROUND: The Casa Blanca Water Pressure Zone Improvements Phase 1 Project will mitigate system low pressure issues within the neighborhood between Marguerita and Lincoln Avenues and between Mary and Maude Streets. This area experiences seasonal low pressures, primarily during the summer months when system demands are higher. This project will stabilize water system pressures in the area and maintain higher pressures during the summer months. The area is currently part of the Gravity Zone and will be converted to a new Casa Blanca 1000 Zone. The work will be constructed by the Water Division's field forces. The project will include installation of 800 feet of 12-inch ductile iron pipe, installation of four new 8-inch valves on existing pipe, installation of a new pressure reducing valve, installation of two new check valves, replacement of 120 feet of existing 6-inch cast iron pipe and 170 feet of existing 4-inch cast iron pipe with new 8-inch ductile iron pipe, and opening and closing various valves to isolate the new pressure zone. Once the new water pipelines are installed, Riverside Public Utilities (RPU) will be responsible for standard trench repaving per the Public Works standard. Near the end of pipeline construction, staff will solicit paving bids for paving the trench area through the Public Utilities Paving Contractor's Panel. A budgetary estimate for the paving work has been included in this authorization. FISCAL IMPACT: The total capital expenditure for Work Order No. 1024632 is estimated to be $885,000, as summarized in the following table: