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SR 05:045
City of Pleasanton
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SR 05:045
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3/10/2005 1:57:43 PM
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3/10/2005 12:32:36 PM
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CITY CLERK
CITY CLERK - TYPE
STAFF REPORTS
DOCUMENT DATE
3/15/2005
DESTRUCT DATE
15 Y
DOCUMENT NO
SR 05:045
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and the replacement of sections of pipe at the pipe bends along Santos Ranch Road. <br />Remaining is the replacement of the three pump stations including the six pumps and related <br />mechanical and electrical equipment. <br /> <br />TETRA TECH CONTRACT <br /> <br />On March 18, 2003 the City Council awarded a consultant contract to Tetra Tech Inc. to <br />prepare design plans and specifications for the Santos Ranch Road Pump Station <br />Improvements. The project scope had significantly changed since the 1998 report estimate, to <br />include a complete reconstruction of the pump stations based upon a detailed review of pump <br />station components in the field, and the fact that the City's Utility Operations Division had <br />responded to a number of pipeline leaks around the pumping stations since 1998. <br /> <br />The pump station re-construction project will replace all three pump stations' piping, valving, <br />pumps, pump cans and electrical equipment, and will upgrade the existing Pacific Gas and <br />Electric Company (PG&E) service from an old "Y' system to more reliable "Delta" system. <br />Also designed were new split face block building structures for each station including <br />foundation slab, a chlorine injection room at one station, a small water tank at one station, site <br />grading, storm drainage system, asphalt paving, utility line relocation, and a new operational <br />control system at each of the pump stations. <br /> <br />The project was designed, advertised and put out to public bid. On November 23, 2004 six <br />bids were received. The lowest responsive bid was approximately $900,000 over the project's <br />construction cost estimate. Based on the potential budget impact and the limited area served <br />by the pump stations, staff evaluated several alternatives and presented them to City Council <br />on February 15, 2005. <br /> <br />Project Alternatives <br /> <br />Alternative 1, was to do nothing and perform repairs of the three pump station facilities as <br />needed. However, as noted, the facilities are over 40 years old and at the end of their <br />projected useful life. These facilities will need to be replaced and the timing before these <br />facilities fail is unknown. Piecemeal repairs as emergency work tend to be more expensive <br />and are geared to solve the immediate deficiency and put the system back on line. The <br />resultant repair is typically a band-aid approach and is not part of an overall coordinated <br />replacement effort. Delays in replacing these facilities are also subject to rising construction <br />costs. Since 1939, construction costs have risen every year. The average annual increase in <br />construction costs over the last five years is approximately 2.6% per year. Therefore, if <br />current construction cost trends continue, the project will increase approximately $75,000 per <br />year, on average, over the next five years. <br /> <br />SR:05:045 <br />Page 3 of 5 <br /> <br /> <br />
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