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W A T E R E N E R G Y L I F E RIVERSIDE PUBLIC UTILITIES PUBLIC UTIiITIES Board Memorandum BOARD OF PUBLIC UTILITIES DATE: December 7, 2012 ITEM NO. 6 SUBJECT: MAGNOLIA-PLAZA RELIABILITY PROJECT— PHASE 1 WORK ORDER NO. 1227700 ISSUE: That the Board of Public Utilities consider approval of Work Order No. 1227700 for Phase 1 of the Magnolia-Plaza Reliability Project. RECOMMENDATION: That the Board of Public Utilities approve Work Order No. 1227700 in the amount of$3,000,000. BACKGROUND; The Electric System Master Plan (ESMP) recommends converting all remaining 4 kV distribution to 12 kV to improve efficiency, modernize, and replace the obsolete equipment. The recent renovation of the Casa Substation eliminated a portion of the 4 kV distribution from the system, and this project will facilitate the conversion of the remaining 4 kV circuits served out of the Magnolia Substation, and will facilitate the decommissioning of the Magnolia Substation. The Magnolia-Plaza Reliability Project (MPRP) is comprised of five phases. The final phase is estimated to be completed by June 2015. Project phases are as follows: Project Phase Phase Name Est Budget Phase 1 Expansion of Plaza Substation $6,700,000 Phase 2 4-12kV Conversion $4,200,000 Phase 3 Distribution Feeders $4,300,000 Phase 4 Transmission Line $300,000 Phase 5 Magnolia Substation Demo/Decommission $500,000 Magnolia-Plaza Reliability Project Total Estimated Budget: $16,000,000 Phase 1 of MPRP is the expansion of the Plaza Substation (Plaza), located at 3716 Elizabeth Street. Plaza is an existing 69 kV substation fed by two 69 kV lines that deliver power to the substation. Plaza has one 69-12 kV transformer and three 69-4 kV substation transformers. Each transformer is currently connected to its awn switchgear with 4 kV or 12 kV circuit breakers that deliver power out of the substation to several distribution circuits providing service to customers throughout the city. This phase will include the purchase of a fifth transformer, which is necessary to provide the capacity needed to convert the obsolete 4 kV to 12 kV at Plaza, as well as to add needed capacity to serve customers currently being served by the Magnolia Substation. The scope of work for Phase 1 includes the purchase and expansion of approximately 22,000 square feet of property east of the existing substation; design and installation of perimeter black walls and rolling gates; specification development and procurement of one 69-12 kV transformer, various electrical