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<br />on the major w~ users that will be modeled as point fi~s rather than based ort land use. <br />Develop typical diurnal flow profiles for weekdays and weekends for residential and non- <br />residential land uses. <br /> <br />6.2 Calibrate the model for both dry and wet weather flow conditions, using the flow data <br />obtained from City and OCSD flow monitors and the lift station run time records. The dry <br />weather calibration will be performed for a period that most closely represents dry weather <br />conditions (i.e., early in the winter, no antecedent rainfall for several days). The wet <br />weather calibration will be performed for the rainfall event that most closely approximates <br />a suitable design event (i.e., significant rainfall on wet soil conditions). The calibration <br />parameters shall be the per-acre average flow factors, diurnal flow profiles, factors <br />affecting the volume and shape of the wet weather hydrographs, the groundwater <br />infiltration, and the "percent developed" values. <br /> <br />6.3 Compare the flow factors and effective peaking factors from the model calibration results <br />to the criteria used in the 1993 Master Plan Update and those used by other agencies. <br />Recommend criteria to be applied for the purposes of identifying capacity deficiencies and <br />sizing of new sewers. Prepare a technical memorandum presenting the model calibration <br />results and recommended criteria. <br /> <br />7. Perform Capacity Analvsis and Recommend Improvements <br /> <br />7.1 Model the existing sewer system under existing and buildout land use conditions, based on <br />the adopted criteria. IdentifY deficiencies in terms ofthe ratio of peak flow to pipe capacity <br />and maximum depth of flow to pipe diameter. Display results on GIS maps to highlight <br />degree of deficiency by color. . <br /> <br />7.2 Analyze the adequacy of the capacity of the two existing sewage lift stations based on their <br />current run times and the findings of the hydraulic modeling. Recommend future upgrades <br />or changes in the operation of these facilities. <br /> <br />7.3 Recommend a capital improvement plan to remedy the identified system deficiencies. <br />Prioritized the projects from the most critical to the least. <br /> <br />7.4 Prepare planning-level construction cost estimates for the proposed improvements. <br /> <br />7.5 Perform additional model runs assuming a reduction in III in selected areas to determine <br />the potential benefits of III reduction in terms of reducing the number and cost of required <br />relief sewers. <br /> <br />8. Prepare Master Plan Report <br /> <br />8.1 Prepare a draft Master Plan Report. The report shall contain a summary of the research and <br />findings, the computer model hydraulic analysis, design criteria, a listing of all deficiencies <br />and problem areas (both existing and projected), proposed improvements, schedule, cost <br />estimates, and recommendations. The report shall also include hard copies of all digital <br />mapping used to prepare the model. A detailed plan showing existing and proposed sewers <br /> <br />cs 387 FOR.'t C\DOCUME_l'ltlees'hawILOCALS-I\TemplAgrcC'mCTlt Package forclty AnomCJ_.doc <br />