11-18-11 BPU RPT 06 - Laserfiche WebLink

Home

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: November 18, 2011 ITEM NO: 6 SUBJECT: MOCKINGBIRD BOOSTER STATION ELECTRICAL UPGRADES-WORK ORDER NO. 1115539 ISSUE: That the Board of Public Utilities consider approval of the capital expenditure of$194,000 for Work Order No. 1115539 for the upgrade of the electrical upgrades at the Mockingbird Booster Station. RECOMMENDATION: That the Board of Public Utilities approve the expenditure of$194,000 for Work Order No. 1115539 for the electrical upgrades at the Mockingbird Booster Station. BACKGROUND: The Mockingbird Booster Station pumps water from the Gravity pressure zone to the 1,200 Van Buren pressure zone,as well as to the Mockingbird Canyon interconnection (Mockingbird)with Western Municipal Water District(WMWD). The existing booster station has four(4) pumps and motors consisting of three (3) 200 and one (1) 75 horsepower pumps. Riverside Public Utilities (RPU) has an agreement to wheel as much as 10 cubic feet per second (cfs) to W MW D at Mockingbird. However, during the summer months, RPU is only able to deliver approximately seven (7) cfs due to limitations at the Booster Station. In order to increase the booster station's pumping capacity the electrical service and switchgear need to be increased to accommodate an additional 200 horsepower pump. Once this is complete, the 75 horsepower will be replaced with 200 horsepower motor and will increase flows from 9,400 gallon per minute (gpm) to 11,200 gpm, which is an increase of approximately four(4) cfs. The cost to upgrade the electrical service is $13,586. This project also includes for the installation and purchase of a conduit, transformer pad, switchgear and bussed gutter. Staff is in the process of soliciting bids from contractors from RPU Electric's Contractor's Panel to complete the installation of the new service,switchgear and bussed gutter. The cost estimate for the installation work is $120,000. FISCAL IMPACT: The total project cost is estimated at $194,000. Funds are budgeted and available in the Public Utilities' Water Fund, Facility Rehab Account No.6230 000-47 0803 and are proposed to be allocated as shown on the table below.