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7.2.C. - Page 17 <br /> 4. Define Deficiencies <br /> Consultant shall establish Criteria for deficiencies. Once the criteria are set, the models can be used to <br /> identify deficiencies in the pipe systems and pump stations for the existing condition. <br /> Consultant shall use a 10-year and a 100-year design storm as input to the calibrated interior and boundary <br /> condition model. Both will use a dynamic tidal boundary condition at San Francisco Bay, with the peak flow <br /> from the pump stations timed to match the Mean Higher High Water (MHHW) in the Bay. A 100-year tidal <br /> boundary condition will then be matched with a 2-year design storm to define the tidal flooding deficiencies. <br /> This model will define existing tidal flood control deficiencies. Sea level rise will also be accounted for in the <br /> analysis. <br /> Deliverable:Existing Conditions Deficiency Map. <br /> Schedule: to be completed by August 31,2014. <br /> 2D Hydraulic Model of Areas with Significant Flooding:After the pipe model is run with the 10-and 100-year <br /> design storms, Consultant shall add a single-density 2D component to the street areas that see significant <br /> flooding. This model will be sufficient to allow Consultant and City to determine flood paths and flood <br /> extents, and will allow the model to assess the impacts of the storage and routing to the hydrology. One or <br /> two areas are assumed. <br /> Deliverable:At Least Two Areas with 2D Analysis. <br /> Schedule: to be completed by August 31,2014. <br /> Sensitivity of Peak Runoff to Land Use Changes <br /> Consultant shall use the land use database and the City's input to determine potential land use changes <br /> within each basin. The model will be re-run with these potential changes to confirm the assumption that the <br /> infrastructure assessment and proposed improvements will not be impacted by potential land use changes. if <br /> the impacts are significant,the models will be re-run with the inclusion of the City's M54 requirements and <br /> the City's detention requirements. <br /> Deliverable:Documented Verification of Hydrologic Impact of Future Land Use Changes. <br /> Schedule: to be completed by August 31,2014. <br /> Task 4: Condition.Assessment <br /> 1. Pump Stations <br /> Condition Assessment <br /> Consultant shall perform a desk-top evaluation that includes preparation for the field assessment, a brief <br /> review of facility design drawings, preparation of field assessment forms, and correspondence with City staff <br /> to obtain record drawings for each facility. Consultant's field effort shall consist of a visual condition <br /> assessment conducted by a multi-disciplinary engineering team lead by the Consultant. One. or more <br /> Redwood City staff members who are knowledgeable of the facilities' operation and maintenance will need <br /> to be present.The Consultant team will ask questions of the Redwood City staff throughout the assessment <br /> to capture maintenance and performance history. While walking through the pump stations, Consultant will <br /> check condition of the structure, mechanical equipment, and electrical equipment. The budget includes 2 <br /> REV:01-15-14 J5 <br /> Page 14 of 18 <br /> ATTY/AGR.2014, 007/Wood Rodgers Storm Plan <br />