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HomeMy WebLinkAboutAgenda Statement 1984/03/13 Item 14` l COUNCIL AGENDA STATEMENT Item 14 Meeting Date 3/13/84 ITEM TITLE: Resolution //5g Appropriating funds to purchase and install a direct exchange heater at Parkway and Loma Verde Pools 111 ,J:f' SUBMITTED BY: Director of Parks & ecreation (4/5ths Vote: Yes X No ) City Engineer REVIEWED BY: City Manager The Parkway Pool was built in 1954 and Loma Verde Pool in 1970. During the winter months, on alternating years when the swimming season terminates, the pool maintenance staff schedule major overhaul work. Repairs, additions, or adaptions are made as required to the heating, circulation, and filtration systems. Scheduled yearly maintenance on the original pools' circulation, filtration, and heating systems has enabled the City to extend their mechanical operating life. Both heating systems within the past two months have been found to be incapable of handling their respective heating requirements. If the City desires to continue to operate these aquatic facilities, replacement of the heaters is necessary. RECOMMENDATION: That Council authorize replacement of the boiler heating systems at the Park Way and Loma Verde Pool and: 1. appropriation of $45,000 from the unappropriated balance of Park Acquisition and Development Funds. 2. direct staff to obtain bids. BOARDS/COMMISSIONS RECOMMENDATION: Not applicable. DISCUSSION: Both Parkway and Loma Verde Pools operate by heat exchangers with closed water circulation which heats the pool water by convection. Parkway's problem is tubes in the heat exchanger have become corroded and leak allowing boiler compound to be mixed with the pool water creating an unsanitary water condition. Loma Verde' s problem is oxidation which has created corrosion and scale inside the tubes which has also led to water leaks. This action has rusted the support brackets in the boiler making it a very unsafe boiler operation condition and almost impossible to reattach new heat tubes to the existing frame support structure. Page 2, Item 14 Meeting Date 3/13/84 The individual heating systems at these pools are the original mechanical equipment. These boiler replacements were scheduled for FY 1984-85 Parkway and FY 1985-86 Loma Verde. When Parkway Pool was drained and the maintenance staff began the inspection of the heating system, it was done with the intention of making normal minor repairs. It was discovered that too much damage had occurred inside the boiler and repair would not be economical . At Loma Verde, the boiler operation condition was becoming very unsafe. Attempts to correct the problem were not being met with success, and repair attempts were becoming expensive. Both systems are in need of extensive repair and even with the repair it cannot be guaranteed they would operate efficiently or safely. The pool maintenance staff has estimated repair of the 30-year old Parkway boiler system to be $20,000. The Loma Verde system has required over $10,000 in new heating tubes over the past six years, and 14 new tubes have been installed since January 1984. This system continues to malfunction and is not repairable. The City's insurance carrier upon request of the City's Risk Analyst has inspected these boilers. It has been deemed unsafe to operate them in their current condition. To save utility costs and improve the mechanical system, the maintenance staff recommends replacement of both indirect heat exchangers with direct heaters. Purchasing this system for Parkway would be approximately the same as repairing the old system. The Loma Verde system must be replaced and should be with a similar direct heating system. Both new units will be more efficient to operate and combined with the solar system could reduce our utility consumption further. Even with the addition of a solar heating system and solar blanket at both sites, the heating systems are necessary to maintain the pool water at an acceptable swimming temperature through most of the year. Estimated cost to remove the old boilers, purchase, and install the new system in each facility is: Parkway - $20,000, Loma Verde - $25,000. Loma Verde Pool is a larger pool which requires a larger heating system. If these heating systems are not replaced, a few options are available to continue operation of these facilities: 1 . Close the pool when the solar system is unable to maintain the water temperature at an acceptable swimming level . 2. Allow swimming in cold water. Neither of these options would be acceptable to the swim clubs, open swim participants, elementary learn-to-swim school program, lap swimmers, or special Red Cross classes that are held from September through May. FISCAL IMPACT: $45,000 needs to be appropriated from the unappropriated balances of Park Acquisition and Development Funds - District No. 13. WPC 0246R Form No. F-229 12/73 CERTIFICATE OF CITY/DIRECTOR OF FINANCE Certification of Unappropriated Balance I HEREBY CERTIFY that the money required for the appropriation of funds for the purpose set forth in the attached resolution is available in the Treasury, or is anticipated to come into the Treasury, and is otherwise unappropriated. Amount $ 45,000.00 Fund Park Acquisition & fevelnpment_ Funds - District No. 13 Purpose Purchase and Install a Direct Exchange Heater at Parkway and Loma Verde Pools Bidder )77- -rue..- /4? -20240---,-.4) Acting Director of Finance The City of Chula Vista Date 3/13/84 By Parks & Recreation/Engineering Certification of Unencumbered Balance I HEREBY CERTIFY that the indebtedness and obligation to be incurred by the contract or agreement authorized by the attached resolution can be incurred without the violation of any of the provisions of the Charter of the City of Chula Vista, or the Constitution or the laws of the State of California, that sufficient monies have been appropriated for the purpose of said contract, that sufficient monies to meet the obligations of the contract are actually in the Treasury, or are anticipated to come into the Treasury to the credit of the appropriation from which the same are to be drawn, and that said monies now actually in the Treasury, together with the monies anticipated to come into the Treasury, to the credit of said appropriation are otherwise unencumbered. Amount Not to Exceed $ Director of Finance The City of Chula Vista Date By Fund Dept./Activity Purpose Bidder Certificate No. 57