Loading...
HomeMy WebLinkAboutAgenda Report - December 16, 1987 (43)IL "'EMBE-1 1.- '987 ALLOCATION OF FUNDS APPROVED FOR CATHODIC PROTECTION OF WASTE- WATER LIFT STATIONS The City Council approved an appropriation of $15,000 from;, the Wastewater Capital Outlay Reserve for the installation CC -20 of impressed current cathodic protection on the City's CC -47 wastewater lift stations. Council was apprised that, early in the summer of 1957, while on routine inspection, City wastewater maintenance personnel found holcs in the steel wail of the Mokelurine Village Wasteivater Lift Station. The floor of this station is approximately 25 feet below the ground. A corrosion specialist was called in to evaluate all five of the City's lift stations. Their evaluation indicated that the standard passive corrosion protection installed with the stations (buried magnesium anodes) would not provide long-term protection for the steel structures. Their recommendation was that the City begin a program of installing impressed current cathodic protection devices on the stations-, starting with :the-Mokelunine Village Station: The requested amount ($15,000) will provide for a standard design for the stations and installation by City forces at all five locations. The work would be done by City electricians over the next two years. It was recor.riended this allocation be approved as`. means toward protecting these facilities. The cost to replace'a corroded lift station shell would likely be near $100,000. .■• t -�- � B e- a r �.. [ 7 COUNCIL COMMUNICATION °UBLiC WORKS JEPt? R T,iAEt,4T Q T0: City Council FROM: City Manager MEETING DATE: December 16, 1587 AGENDA TITLE: Approve Allocation of Funds for Cathodic Protection of Wastewater Lift Stations RECOMMENDED ACTION: That the City Council approve the appropriation of $15,000 from the Wastewater Capital Outlay Reserve for the installation of impressed current cathodic protection on the City's wastewater lift stations. BACKGROUND INFORMA71ON: Early in the summer of 1387, while on routine inspection, City wastewater maintenance personnel found holes in the steel wall of the Mokelumne Village Wastewater Lift Station. The floor of this station is approximately 25 feet below the ground. A corrosion specialist was called in to evaluate, all five of the City's lift stations. Their evaluation indicated that the standard passive corrosion protection installed with the stations (buried magnesium anodes) would not provide long-term protection for the steel structures. Their recommendation was that the City begin a program of installing impressed current cathodic protection devices on the stations, starting with the Mokelumne Village Station, The requested amount ($15,000) will provide for a standard design for the stations and installation by City forces at all five locations. The work would be done by City electricians over the next_ two years. It is recommended this allocation be approved as a means toward protecting these facilities. The cost to replace a corroded lift station shell would likely be nea„F $100,000. ck L. Ronsko bliv Works Director JLR71ZCP/ma Attachment cc: Water/Wastewater Superintendent APPROVED: f FILE No. _0 .r � _ _ ' .. r! P4AS A. PETERSON, City Manager CLIFTSTA/TXTW.02M December 8, 1987 OOD sem.-'.City iManager's Office Y F LSPECIAL ALLOCATION REQUEST "JTDI TO: Finance Director City Manager 'gate: "I !23/82 FROM: Public Works Director— Account Number: 17.1-400.07 Request is made for funds to accomplish the following which was not included in the current budget: PROJECT DESCRIPTION & JUSTIFICATION Wastewater Lift Station Cathodic Protection ESTIMATED COST Design $ 3,000 A corrosion specialist (Villalobus & Associates) Installation 12,000 recently completed a study on the rive wastewater lift Total $15000 stations. The study was done because holes were found ' in the Mokelumne Village Station. (See Special Allocation dated June 26, 1487.) The study recommended installation of impressed cut -rent cathodic protection devices at four of the five stations and indicated the work could be done on a staged basis (one station per year). After discussion with the consultant, we recommend an account for the total work be established and the work be done by City forces over the next few years. The consultant will provide plans and a bill of materials for each station. Utility Department electricians will do the work as time permits. Thea nt should be sufficient to do all five stations as we know the fiftA�on wil V ed e work eventually. \ �w cc: Water/Wastewater Superintendent Assistant Electric Utility Director FUND OR ACCOUNT TO BE CHARG ED Current Budget Contingent Fund Capital Outlay Reserve Utility Outlay Reserve APPROVALS Fund Verification finance Dto�r�� Submit this form in triplicate. Prior Year Reserve General Fund Surplus S S Reimbursable Account S se watt vT, L ,T Y C$1Oi781- $ �S odo other App►o t City Manager da-� ❑ City Council Amount Approved S ($ 060.