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W A 7 r= R E N E 4 G Y 1. 1 RIVERSIDE PUBLIC UTILITIES Board Memorandum P 0 B L I C UTILITIES BOARD OF PUBLIC UTILITIES DATE: November 2, 2012 ITEM NO: 4 SUBJECT: CIRCUIT 1501 SWITCH REPLACEMENT PROJECT -WORK ORDER NO. 1305515 ISSUE: Board of Public Utilities approval is requested for Work Order No.1305515, RECOMMENDATION: That the Board of Public Utilities approve the estimated capital expenditure of $133,000 for Work Order No. 1305515 to install a switch, conduits, and other substructures on Tyler Street which will replace damaged inoperable equipment necessary for load transfers. BACKGROUND: During routine maintenance, gas switch GS3-187 was removed in June 2012, after four years of inoperability. The switch was located inside vault V1258 and served half of the load of the Tyler Galleria Mall. As an emergency repair, all cables were spliced bypassing the switch, thereby decreasing the system's reliability and ability to isolate load where needed. The proposed project will improve Riverside Public Utilities' (RPU) ability to isolate load in that area and improve system reliability. The proposed project involves the installation of 677 feet of conduit, 1,152 feet of underground cable, one padmounted switch with enclosure (PSE), and one commercial subsurface transformer enclosure. The relocated structures were designed with consideration given to the surrounding aesthetics (Attachment 1). Engineering was performed by RPU staff and electrical work will be performed by RPU field forces. Civil construction will be performed by contract crews from the RPU Contractor's Panel. FISCAL IMPACT: The capital expenditure for Work Order No. 1305515 is estimated to be $133,000 and is detailed as follows: % of Total Design, Construction Management, Inspection $5,300 4% Construction Contract- Conduits & Substructures $37,040 28% Contingency $3,700 3% Construction RPU Field Forces $67,000 50% Easement $20,000 15% Total $133,000 100% Sufficient funds are available in the Electric Capital Account No. 6130000-470603.