AgdaPkt 2012-11-05 - Laserfiche WebLink

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6.1.B. - Page 15 service and coordinate with PG&E for a service upgrade if needed. 3. Review and incorporate pertinent findings of the CEQA document and Geotechnical Report (both documents to be prepared by other consultants) into the design documents. 4. Develop two (2) water tank and site alternatives. The alternatives shall consider tank location and dimensions, high and low water levels, foundation type, tank material (circular steel, circular prestressed concrete, and conventionally reinforced rectangular concrete), seismic features and connections, pipe configurations and suction and discharge pipe alignments, mixing system, site drainage, landscaping theme, options for tank exterior decorative features, earthwork considerations and the need for retaining walls, feasibility for construction, known environmental mitigation measures, and proposed tank operational considerations. A preliminary construction cost estimate, as well as a cost-benefit/life cycle cost analysis shall be included for each alternative. 5. Develop two (2) viable pump station building alternatives. The alternatives shall include preliminary pump station layout, number and capacity of pumps (options will consist of two duty pumps plus a fire pump or three equivalent duty pumps), pump and system head curves, recommendations for variable or constant speed drives, full enclosure for the pump station and an emergency standby generator. Alternatives shall examine locations and materials of construction for the pump station building and consider configuration of the pump station and intake piping from the new tank with the option to feed from the High Line and connection to the discharge piping through a pressure reducing/sustaining valve. A preliminary pump station architectural theme will be developed. Security features such as fencing and security cameras shall be discussed and recommendations provided. A preliminary construction cost estimate, as well as a cost- benefit/life cycle cost analysis shall be included for each alternative. 6. Perform a hydraulic transient analysis of the proposed California Pump Station as well as the Lakeview Pump Station. This shall consist of modeling the system when delivering flow to Easter Cross and Easter Bowl pressure zones and from Lakeview to California zone under maximum flow conditions (peak hour demand with no fire). Simulations for sudden loss of pump station power and pump startup under maximum flow conditions shall be performed. The results of the analysis shall be reviewed and the worst case transient surge condition shall be used as the basis to recommend appropriate surge protection measures to prevent adverse pressure surges. The results of the hydraulic transient analysis shall be documented in a stand-alone report. 7. Provide a control strategy report and programming services for the new California Pump Station as well as the Lakeview and Glenloch Pump Stations to integrate the three facilities into the City's overall system. 8. Develop preliminary demolition and phasing plan for the existing pump station and 6-inch discharge pipeline. 9. Prepare a Preliminary Design Report/technical memorandum and 30% level preliminary plans that document the findings and provide the basis of design for the project. The PDR shall include a preliminary project cost estimate and recommended implementation schedule. 10. Identify permit requirements with CDPH and PG&E, and coordinate with the City for application. Five (5) sets of the preliminary design submittal shall be presented to the City for review. One ATTY/AGR/2012.170/DSA INFRASTRUCTURE ENGINEERING CORP REV: 10-17-12 VR Page 12 of 17