Title
Staff Report for Resolution Accepting the Work for the Preda Street Pipe Bridges Upgrade Project, Project No. 09-593-52-121
Staffreport
RECOMMENDATIONS
Staff recommends acceptance of the work, filing of the Notice of Completion, and upon completion to the satisfaction of the City Engineer of the one-year maintenance period, authorizing the City Manager to release the maintenance bond for the subject project.
BACKGROUND
Two sanitary sewer main pipelines pass beneath the Union Pacific Railroad tracks and cross San Leandro Creek on two parallel bridge structures near the northern end of Preda Street. The first bridge was constructed in 1938 and the second in 1973.
An inspection of these facilities found one of the bridge structures damaged, possibly from a fallen tree or limb. Because of their age and their location across the environmentally sensitive San Leandro Creek, further investigation was conducted to determine the condition of the pipes and the bridge structures. The study identified several bridge components that needed to be upgraded to meet current seismic loading conditions. To reduce the risk of sewage leaking into the creek below, the pipes were replaced with a joint locking system and flex joint. These completed improvements will increase system reliability during a significant seismic event.
Analysis
The project is complete. All work was completed in compliance with California Department of Fish and Game and Union Pacific Railroad requirements.
Current Agency Policies
Ensure well-maintained sewer facilities.
Previous Actions
• On July 6, 2009, by Resolution No. 2009-100 the City Council approved a consulting services agreement with Creegan + D’Angelo for the design and environmental plan
• On February 7, 2011, by Resolution No. 2011-015, the City Council authorized the City Manager to execute a Supplemental Agreement with Union Pacific Railroad to document the existing pipeline crossing its right-of-way
• On April 4, 2011, by Resolution No. 2011-069, the City Council adopted a Mitigated Negative Declaration, approved the plans and specifications and called for bids for the subject project
• On May 16, 2011, by Resolution No. 2011-092, the City Council awarded construction of the project to Redwood Engineering Company, the lowest responsive bidder
Applicable General Plan Policies
Policy 52.04: Maintain efficient, environmentally sound, and cost-effective wastewater collection and treatment services in San Leandro.
Permits and/or Variances Granted
• Alameda County Flood Control and Water Conservation Department Encroachment Permit
• California Department of Fish and Game Permit
Environmental Review
California Environmental Quality Act (CEQA) Mitigated Negative Declaration was filed with Alameda County pursuant to Section 15301 “Existing Facilities”.
Fiscal Impacts
The cost of the construction contract was as follows:
Redwood Engineering Co. Original Contract $329,440.00
2336 El Camino Real Change Orders $157,837.58
Redwood City, CA 94063 Total Contract Amount $487,277.58
Significant change order items include: abatement of existing paint containing low levels of lead; repainting entire structures; and acceleration of the schedule to complete abatement and contract work within permitted period.
Budget Authority
Funding was appropriated initially in April 2004 for the Sanitary Sewer Line Replacements in Account No. 593-52-121 and additional funds were transferred into the project from 593-52-117 later.
ATTACHMENTS
None
PREPARED BY: John O’Driscoll, Associate Engineer, Engineering and Transportation