04-06-12 BPU RPT 11 - Laserfiche WebLink

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7J RIVERSIDE PUBLIC UTILITIES Board Memorandum PUBLIC UTILITIES BOARD OF PUBLIC UTILITIES DATE: April 06, 2012 ITEM NO: 11 SUBJECT: CASA BLANCA SUBSTATION FEEDER RECONFIGURATION — INCREASE FOR WORK ORDER NO. 1112780 ISSUE: Board of Public Utilities approval is requested to provide additional funding for Work Order No. 1112780. RECOMMENDATION: That the Board of Public Utilities approve the additional estimated capital expenditure of $118,832 for Work Order No. 1112780 to install the steel pole foundations along Evans Street between Pliny and Madison Streets. BACKGROUND: Work Order No. 1112780 was approved by the Board of Public Utilities on February 3, 2012 for the estimated capital expenditure of$435,000. The work proposed under Work Order No. 1112780 consists of: a) the installation of the underground getaways for the Casa Blanca Substation along Evans Street, and b) the extension of new conduits to a riser pole for future circuit reconfiguration along Evans Street between Samuel and Madison Streets. This Project includes the installation of 2,508 feet of new conduit, underground cabling, substructures and four steel pole foundations, as well as street improvements. The cost to construct the steel pole foundations is greater than originally estimated. Additional funding is required for this Work Order due to increased material costs and additional shoring required due to above average sand content in the soil. Material costs used to develop the Engineer's estimate under- valued the cost of concrete. Also, additional shoring will be required to dig the four 28-49 foot steel pole foundations. Together, these issues have resulted in the need of an additional $118,832 for the Project. The electrical engineering was performed by a consultant chosen through Riverside Public Utilities (RPU) Consultants' Panel. All civil work including trenching, conduits, foundations and other infrastructure work will be performed by a contractor utilizing the Electric Contractors Panel. Electrical work will be performed by RPU field forces. FISCAL IMPACT: The capital expenditure for the work order is estimated to be $553,832 and includes all construction, contingencies, construction management, inspection and design, as summarized in the table below. Although this action does result in a cost increase to this work order, the increase is covered by a contingency included in the project budget for the Casa Blanca Power Project.