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W A T E R E H E R 4. Y l I I } mild& RIVERSIDE PUBLIC UTILITIES Board Memorandum P U B L I C U T I L I T I E S BOARD OF PUBLIC UTILITIES DATE: October 21, 2011 ITEM NO: 8 SUBJECT: WORK ORDER AMOUNT INCREASE AND CHANGE ORDER NO. 4 TO PURCHASE ORDER NO. 116300 FOR CASA BLANCA SUBSTATION DEMOLITION AND SITE PREPARATION —WORK ORDER NO. 1016403 ISSUES: Board of Public Utilities is requested to approve: 1] an increase of Work Order No. 1015403 from $4,200,000 to $9,000,000; 2) Change Order No. 4 to Purchase Order No. 115300 in the amount of $39,275.51 for the removal and disposal of polychlorinated biphenyls {PCB} contaminated soil and concrete; and 3) authorization of additional change orders not-to-exceed 25% of the original purchase order amount. RECOMMENDATIONS: That the Board of Public Utilities: 1. Approve an increase in the amount of Work Order No. 1016403 from $4,200,000 to $9,000,000; 2. Approve Change Order No. 4 to Purchase Order No. 115300 with Genesis Construction, of Hemet, California, in the amount of$39,275.51; and 3. Authorize the General Manager to issue additional change orders in an amount not-to-exceed 25% of the original purchase order amount to Purchase Order No. 115300, or$159,052.75. BACKGROUND: The Casa Blanca Substation was identified for expansion as part of Riverside Public Utilities' Electric System Master Plan (ESMP) in order to keep pace with growth and maintain reliability of the RPU's electric system. Subsequently, the Casa Blanca Power Project (CBPP) was initiated to carry out the ESMP recommendation for expansion of the Casa Blanca Substation. The CBPP includes the upgrade and replacement of the existing Casa Blanca Substation located at 7615 Evans Street. Furthermore, the CBPP includes the extension of 59kV subtransmission lines and the installation of new 12kV feeders. Ultimately, the CBPP will provide the necessary electrical infrastructure for the existing service areas of Casa Blanca, Freeman and Harvey Lynn Substations, as well as the outer fringe areas of Orangecrest and Pla2a Substations. Increase to Work Order No. 107$403 On September 17, 2010, the Board of Public Utilities approved Work Order No. 1016403 in the amount of $4,200,000, which was the available amount in Account No. 5130000-470532 during Fiscal Year 2010-11. Staff noted in that Board report that the Casa Blanca Substation upgrade was estimated at $9,000,000, and a future report would be brought to the Board for approval of a Work Order increase to reach the full project cost once additional funds became available in that project account at the beginning of Fiscal Year 2011-12. The total capital expenditure of $9,000,000 for Work Order No. 1015403 includes all costs for equipment, materials, engineering, construction, overhead, and contingency as follows: