07-01-11 BPU RPT 10 - Laserfiche WebLink

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W A T E R E H E. R G Y L I F E RIVERSIDE PUBLIC UTILITIES L3W& Board Memorandum P U@ LIaC U T I LIT I E 5 BOARD OF PUBLIC UTILITIES DATE: July 1, 2011 ITEM NO: 10 SUBJECT: CONSTRUCTION OF THE SUNNYSIDE AND GARNER FFB" CHLORINATION FACILITIES REHABILITATION PROJECT—PHASE 11, BID No.8944—WORK ORDER NO. 0810710 ISSUE: That the Board of Public Utilities consider approval of the additional capital expenditure in the amount of $970,000 to construct the Sunnyside and Gamer"B"Chlorination Facilities Rehabilitation Project—Phase 11, Bid No. 6944, RECOMMENDATIONS: That the Board of Public Utilities: 1. Approve the additional capital expenditure of$970,000 for Work Order No. 0810710,which includes all design,construction, change order contingencies, construction management and inspection for the Sunnyside and Gamer"B" Chlorination Facilities Rehabilitation Project— Phase ll; and 2. Award a contract for the construction of the Sunnyside and Gamer "B" Chlorination Facilities Rehabilitation Project—Phase 11, Bid No. 6944,to the lowest responsive bidder, SCW Contractors, Inc., of Fallbrook, California, in the amount of$714,345. BACKGROUND: The Chlorine Facilities Rehabilitation Project involves the replacement of gaseous chlorine with low concentration (0.8%) liquid sodium hypochlorite (bleach) generated on-site from water, salt, and electricity. The goal is to provide a reliable, redundant, safe and cost-effective gstem. Four locations are planned for on-site sodium hypochlorite generation. The four locations are: the 6 Chlorination Station; the Tippecanoe Chlorination Station;the Sunnyside Chlorination Station; and the Gamer B Chlorinati on Station.Each site will include the fallowing: a saIttruck delivery/filI station; skid-mounted sodium hypochlorite generation unit;feed water softening system; salt/brine storage tank; brine pump; sodium hypochlorite storage tank; blower and vent system; chemical metering pumps; piping; and injection quill at the point of chlorine application.At the Sixth Street and Tippecanoe sites, the existing buildings, structures, electric service, SCADA system, and security will be modified and re-equipped. During the summer 2010, two of the four sites were converted to on-site generated sodium hypochlorite system; Sixth Street and Tippecanoe Ave Chlorination Stations.The last two remaining stations will be atthe Sunnyside Water Treatment Plant and the Garner"B" Well site. Each site will have a new masonry block building to house the brine and sodium hypochlorite tanks, hypochlorite generator and chemical metering pumps. See attached site map. In order to complete the last two sites, construction plans were prepared and sent outforformal bidding. Bids were opened on May 23, 2011 and staff has determined that the lowest responsive bid was submitted by SCW, Inc., of Fallbrook, California. Staff has reviewed all provided documentation and has determined that SCW, Inc. has met all of the requirements of the specifications.