04-04-2014 BPU RPT 04 - Laserfiche WebLink

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A F RIVERSIDE PUBLIC UTILITIES Board Memorandum SUBJECT: CONSTRUCTION REPLACEMENT NO. 1323230 DATE: April 4, 2014 The issues for Board of Public Utilities consideration are, 1) approval of a contract award for the Raub Chlorination Station Tank Replacement Project — Bid No. RPLI-7226; and 2) approval of a capital expenditure in the amount of $98,000 for Work Order No. 1323230. MeRam That the Board of Public Utilities: 1. Approve the capital expenditure of $98,000 for Work Order No. 1323230, which includes all design, construction, change order, contingencies, construction management and inspection costs for the Raub Chlorination Station Tank Replacement Project — Bid No. RP -7220; and 2. Award a contract for the construction of the Raub C'Norination Station Tank Replacement Project — Bid No. RPU-7226 to the lowest responsive bidder, New Millenium Construction Services, Inc., of Chino Hills, California, in the amount of $47,889. ....... ..... Riverside Public Utilities IRPU) protects its water system by injecting a small amount of chlorine generally near the well fields. RPU uses hvo sources of chlorine.- one is liquid sodium hypochlorite solution which is delivered to each site by tanker trucks and stored in a tank; the other is an onsite generation unit that converts salt to sodium hypochlorite solution directly. The existing Raub Chlorination Station (Raub) uses liquid sodium hypochlorite solution. The plastic 4 storage tank at this site, where the liquid sodium hypochlorite is stored, began leaking several months ago. The tank has been repaired several times, but due to the tank material and location of the leaks, these repairs have not provided a permanent solution. In addition, the building that houses the tank was not designed to allow for the easy removal and replacement of the tank. The project was reevaluated, and a new scope of work was developed to modify the existing building to accommodate a manually operated rollup door, and replace the leaky tank with a new double-walled 2,500 gallon storage tank, along with all related plumbing and appurtenances. The existing site will remain in operation during construction, except for a very short period of time at the end of the project I j when the new tank will be connected to the system. This option will allow the storage tank to remain