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Task 3 — Additional Existing System Model Development • Consultant will apply the new friction factors developed as part of Task 2 to the modeling scenarios updated as part of Task 1. Once the new friction factors are applied to the distribution system, Consultant will adjust operating conditions in the model for the water plant discharge pressures, elevated storage tanks and North Beach Repump in an effort to attempt to match the flows and tank levels observed from the SCADA data. The Consultant will review areas where the model is not representative of the field data and review with the County potential for closed valves in these areas. • Consultant will update the calibrated model to reflect the proposed improvements for the Roseland elevated storage tank. It is assumed that the new Roseland pump station will not be in service before the field calibration is performed; however, evaluation of the existing system will be performed assuming the Roseland improvements are complete. • Consultant will review SCADA data to develop a diurnal water demand curve for the system demands. • The Consultant will collect information on the South County ground storage tanks including the normal operating levels. Consultant will incorporate the South County ground storage tanks and the storage tank interconnect into the hydraulic model. • Consultant will develop an extended period simulation for maximum daily flow and average daily flow demand scenarios using the diurnal water demand curve. It is assumed that for each demand scenario up to eight extended period sub -scenarios will be developed to look at different operations for the elevated storage tanks, North Beach repump, and existing interconnect to the South County Storage Tank. Task 4 — Model Evaluation/Report Preparation Consultant will use the calibrated model to evaluate the fill time and flows through the interconnect for various water levels in the South County ground storage tanks and make recommendations about operations of the existing interconnect. The intent of the evaluation is not to evaluate the size of the ground storage tanks, but to recommend the capacity and fill times for the interconnect. The Consultant will review the impact the interconnect will have on the South County's contact time (CT) calculations. It is assumed that up to 30 hours of effort is required for this task and significant effort beyond this amount will be considered additional services. Consultant will evaluate the ability of the water distribution system's ability to provide the recommended ISO/PBS&J fire flow requirements for the various land use types currently in the hydraulic model. It is expected that it may not be feasible to provide the recommended fire flow for some land use types without extensive improvements. After these areas and land use types are identified, the Consultant will meet with the County