08-27-2018 BPU RPT 08 - Laserfiche WebLink

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W A T F R E N E R G Y L RIVERSIDE PUBLIC UTILITIES .�W& Board Memorandum P U B L I C U T I L I T I E S BOARD OF PUBLIC UTILITIES DATE: AUGUST 27, 2018 ITEM NO: 8 SUBJECT: SUPPLEMENTAL AGREEMENT FOR ASSIGNED PROJECT FROM RFP -1786 TO NV5 INC. OF SAN DIEGO, CALIFORNIA, TO PROVIDE DESIGN AND TECHNICAL SUPPORT SERVICES FOR THE FREEMAN SUBSTATION TRANSFORMER NO. 4 AND MOUNTAIN VIEW TRANSFORMER NO. 4 FOUNDATIONS IN THE AMOUNT OF $210,760.22 ISSUE: Approve a Supplemental Agreement for Assigned Project from RFP -1786 to NV5 Inc. of San Diego, California, to provide design and technical support services for the Freeman Substation Transformer No. 4 and Mountain View Transformer No. 4 foundations in the amount of $210,760.22. RECOMMENDATIONS: That the Board of Public Utilities: 1. Approve a Supplemental Agreement for Assigned Project from RFP -1786 to NV5 Inc. of San Diego, California, to provide design and technical support services for the Freeman Substation Transformer No. 4 and Mountain View Transformer No. 4 foundations in the amount of $210,760.22; and 2. Authorize the City Manager, or his designee, to execute a Supplemental Agreement to the Professional Consultant Services Agreement with NV5, Inc. BACKGROUND: On May 14, 2018, the Board of Public Utilities approved Work Order No. 1816638 for the Freeman Substation Transformer No. 4 (Freeman T4) and Mountain View Transformer No. 4 (Mt. View T4) Replacement Project in the amount of $4,202,827. The work order total includes engineering design, technical and construction support, equipment purchase, construction, and inspection. Substation power transformers (transformers) are essential components of the power grid. Transformers are critical to the reliability and optimum operation of the electric grid. A single substation transformer can provide power to more than 5,000 customers. As such, substation power transformers are critical assets in Riverside Public Utilities' (RPU) electric system. The average expected life of a substation power transformer is approximately 40 years. Several of the substation transformers in RPU's system have exceeded or are reaching the end of their design life. The age of a transformer is a significant factor in electric system reliability, safety, and maintenance costs. The loading capability of a transformer declines as a transformer ages. Age also reduces the transformer's ability to handle electrical and mechanical stresses encountered during normal operation. Page 111