11-18-11 BPU RPT 05 - Laserfiche WebLink

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P 1, Y f. RIVERSIDE PUBLIC UTILITIES P U B L I C U T I L I T I E S Board Memorandum BOARD OF PUBLIC UTILITIES DATE: November 18, 2011 ITEM NO: 5 SUBJECT: CHANGE ORDER NO. 1 TO PURCHASE ORDER NO. 114146 CONDUIT AND STRUCTURE INSTALLATION FOR CASA FLORES COMPLEX AND MAGNOLIA CONVALESCENT HOSPITAL AT 8123 MAGNOLIA AVENUE - WORK ORDER NO. 1104644 ISSUE: Board of Public Utilities approval is requested for Change Order No. 1 to Purchase Order No, 114146, in the amount of $20,786.81 for additional trenching, conduit and structure relocations due to field conditions and the removal and replacement of an inaccessible buried transformer enclosure. RECOMMENDATION: That the Board of Public Utilities approve Change Order No. 1 to Purchase Order No. 114146, in the amount of $20,786.81. BACKGROUND: Work Order No. 1104644 for conduit and structure installation for Casa Flores complex and Magnolia Convalescent Hospital at 8123 Magnolia Avenue was approved by the Board of Public Utilities on December 17, 2010 for an estimated capital expenditure of $147,000. The conduit and structure portion of the project was issued to the Contractors' Panel for Energy Delivery work on January 7, 2011. Bids were opened on January 18, 2011 and Southern Contracting Co., of San Marcos, California, was the lowest responsive bidder in the amount of $54,543.28. Change Order No. 1, in the amount of $20,786.81 is requested due to: • Existing AT&T facilities were in conflict with new structures and thus had to be relocated. • Partial primary riser pole trenching had to be reinstalled due to conflicts in the street. • Remove and reinstall existing handicap concrete chair ramp impacted by trenching. • Additional concrete encasement and adding of dye to identify RPU conduits with only 24" of cover. • Removal of an existing buried transformer enclosure that was inaccessible due to its location under a stairwell and replacement with a new traffic rated buried transformer enclosure. • Additional paving and traffic control was required due to field conditions. Board authorization is required as the cumulative change order amount exceeds 10% of the original purchase order amount as summarized in the following table: Percent Descri tion Amount Change Original purchase order $54,543.28 Change order No. 1 $20,785.81 38.11% Total $75,330.09 38.11% The need for the extra work is due to unknown and changing field conditions some of which is on private property. No further change orders are anticipated as the work is nearly complete.