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CITY OF SAN LEANDRO <br /> APPROVED AND <br /> STAFF REPORT FORWARDED <br /> TO CITY COUNCIL <br /> DATE: April 4, 2011 <br /> Stephen L. Hollister <br /> TO: Stephen L. Hollister, City Manag r City Manager <br /> FROM: Uchenna Udemezue, Director <br /> Engineering and Transportation epartment <br /> BY: Kenneth Joseph, City Engineer <br /> Engineering and Transportation Department <br /> SUBJECT PROJECT /PROJECT DESCRIPTION: <br /> RESOLUTION ADOPTING MITIGATED NEGATIVE DECLARATION, APPROVING <br /> PLANS AND SPECIFICATIONS AND CALLING FOR BIDS FOR THE PREDA STREET <br /> PIPE BRIDGES UPGRADE, PROJECT NO. 09- 593 -52 -121. <br /> SUMMARY AND RECOMMENDATION <br /> Staff recommends adoption of Mitigated Negative Declaration, approval of the plans and <br /> specifications and call for bids for the subject project. <br /> BACKGROUND <br /> Two sanitary sewer main pipelines pass beneath the Union Pacific Railroad tracks and cross <br /> above San Leandro Creek on parallel bridge structures near the northern end of Preda Street. <br /> The first bridge was constructed in 1938 and the second in 1973. <br /> A recent inspection of these facilities found one of the bridge structures damaged, possibly from <br /> a fallen tree or limb. Because of their age and their location crossing the environmentally <br /> sensitive San Leandro Creek, further investigation was conducted to determine the condition of <br /> the pipes and the bridge structures. <br /> Analysis <br /> To meet current seismic loading conditions, the study identified several bridge components that <br /> need to be upgraded. Also, to reduce the risk of sewage leaking into the creek below, the pipes will <br /> be replaced with a joint locking system and flex joint. These improvements will increase system <br /> reliability during a significant seismic event. <br /> Current City Council Policy <br /> Ensure well- maintained sewer facilities. <br />