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e. Gather and review utility maps supplied by the <br /> City (water, storm drain and traffic signal <br /> control) Pacific Gas and Electric, (gas, buried <br /> electrical cables, and overhead wires), Pacific <br /> Telesis (buried and overhead telephone lines), <br /> Viacom Cablevision (buried and overhead), Alameda <br /> County Flood Control and Water Conservation <br /> District, Zone 7, Southern Pacific and Western <br /> Pacific railroad. <br /> <br /> f. Review existing available geotechnical information <br /> provided by City. <br /> <br />1.2 Determine Feasibility of Elimination of PS4 <br /> <br /> a. Obtain pumping station inlet elevation. <br /> Supplement with ground surveying if necessary. <br /> (This subtask limited to a maximum of 4 hours). <br /> <br /> b. Determine average and peak flow rates to PS4. <br /> <br /> c. Determine whether wastewater can gravity flow to <br /> interceptor. <br /> <br />1.3 Conduct Wet Weather Flow Monitoring (optional) <br /> <br /> a. Install three temporary sewer flow monitors and <br /> one temporary rain gage to collect data for a 21- <br /> day period to verify I/I and peaking factor design <br /> criteria. <br /> <br /> b. Extend flow monitoring data, and identify I/I <br /> loads. Confirm current peaking factor or <br /> recommend modified factor for City approval. <br /> <br />1.4 Determine Required Capacity of Interceptor <br /> <br /> a. Determine the number, location, size, and <br /> contributary flow of local sewers that would <br /> discharge to the proposed interceptor based on the <br /> information in the Sewer Master Plan and from City <br /> staff. <br /> <br /> b. Evaluate whether extension of interceptor to Pump <br /> Station 6 is required. <br /> <br /> Revised <br /> Exhibit A <br /> City of Pleasanton <br /> April 5, 1988 <br /> Page 2 of 8 <br /> <br /> <br />