12-20-2013 BPU RPT 04 - Laserfiche WebLink

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WATER E N E R r Y RIVERSIDE PUBLIC UTILITIES Board Memorandum PUBLIC UTILITIES BOARD OF PUBLIC UTILITIES DATE: December 20, 2013 ITEM NO: 4 SUBJECT: PRIMARY CABLE BURN UP AT 4967 RED ROCK AVENUE WESTERLY OF CHALLEN AVENUE — EMERGENCY WORK ORDER NO. 1405589 ISSUE: The item for Board of Public Utilities consideration is approval of Emergency Work Order No. 1405589. RECOMMENDATION: That the Board of Public Utilities approve the estimated capital expenditure of$75,509.29 for Emergency Work Order No. 1405589. BACKGROUND: On Tuesday, September 3, 2013, a section of 12 kV cable faulted on Red Rock Avenue, westerly of Challen Avenue. Crews were unable to remove the existing cable and temporary switching was performed in order to facilitate system restoration and repairs. Meanwhile, Engineering Division staff prepared a design to restore the system to its permanent configuration. Staff initially estimated the cost of repairs to restore the system to its permanent configuration at $40,000, and the Work Order was created and approved administratively. Contract crews from Southern Contracting, a member of the Contractors' Panel for Energy Delivery work, were directed to install 365 feet of trenching and conduit, and to replace a grate and baffle of an existing buried transformer enclosure to restore the electrical system to its permanent system configuration. The Work Order is higher than originally estimated due to several issues. For example, Public Works required extra flagmen throughout the duration of the project because the work location had poor line of sight for traffic. In addition, Public Works directed trenches to be backfilled with slurry instead of native soil in order to expedite the work and minimize impact on local residents. Extra grind and cap of the pavement at some locations was required to reduce the existing cracked conditions. Also, AT&T's contractor was performing repairs at the same location which impacted productivity. Collectively, extra requirements and impacts from other contractors contributed to additional costs beyond the original work order. The project's schedule and timing are shown in the table below: Project Schedule Engineering Performed By: RPU Civil Construction Performed By: Contract crews from Southern Contracting Electrical Work Performed By: RPU field forces Start Date: September 4, 2013 Duration: Two weeks