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Attachment SC <br /> dry weather per capita and peaking factors for the City's service areas. Evaluate seasonal variation <br /> of flows generated by institutional customers or other significant factors. <br /> B2. Evaluate Future Service Areas and Develop Wastewater Flow Projections: Refer to the City's <br /> Comprehensive Plan for wastewater service area and develop growth assumptions for future <br /> wastewater customers. Determine expected per-capita wastewater generation and develop <br /> wastewater flow projections for 5-year, 10-year,and 25-year planning horizons. <br /> B3. Progress Meeting #1: Attend and facilitate a meeting with City to review wastewater flow <br /> projections. <br /> B4. Wastewater Flow Projections Technical Memorandum: Prepare a Technical Memorandum <br /> summarizing the proposed population and wastewater flow projections. An electronic PDF file of <br /> the Technical Memorandum will be submitted to the City. Comments or edits to the memorandum <br /> will be incorporated into the Master Plan report. <br /> Task C: Wastewater Model Development and Calibration <br /> C1. Flow Meter Preparatory Work: Review existing collection system to identify temporary wastewater <br /> flow metering sites. Perform reconnaissance of the metering sites to determine the suitability for <br /> metering based on hydraulics and accessibility during rainfall periods. <br /> C2. Temporary Flow Meter Installation and Data Collection: Install, maintain, and remove fifteen (15) <br /> temporary velocity/depth recorders to monitor wastewater flow. Velocity and depth readings will <br /> be obtained at 15-minute intervals. The flow metering equipment will be maintained, and data <br /> collected for a period of sixty (60) days to cover representative dry weather flows and any rainfall <br /> events which may happen to occur. Two (2) rainfall gauges will also be installed within the study <br /> area to obtain localized rainfall data._FNI will provide recommendations, if any, for supplemental <br /> metering of pumped flows during the field measurement period and coordinate data collection <br /> efforts with operations staff. No additional field data collection by FNI is included in this contract <br /> C3. Flow Data Analysis and Evaluation: Reduce raw field monitoring data collected by the temporary <br /> flow monitoring units and City maintained flow monitoring units, and consolidate data into a <br /> uniform format. Tabulate 15-minute flow data for the entire flow monitoring period. Evaluate flow <br /> meter data to quantify base average dry weather flow, peak dry weather flow, and peak wet <br /> weather flow rates, quantity of infiltration and inflows from each sewer basin, and update <br /> recommendations for infiltration and inflow allowances. <br /> C4. 1/1 Characterization and Ranking: Flow data will be compared with rainfall data to determine amount <br /> of inflow and infiltration experienced during selected storm events. Utilize temporary flow data to <br /> characterize the 1/1 in the wastewater collection system. Mapping will be developed for all the flow <br /> meter basins to characterize and rank the basins by the amount of 1/1 entering the collection system. <br /> The mapping will provide the City with an understanding of basins where higher amounts of <br /> infiltration and inflow are entering the system. <br /> C5. Wastewater Model Update: Utilize City's GIS data to update the existing InfoWorks ICM model. <br /> Review model network to identify and correct data gaps and connectivity,size, invert elevation,and <br /> reverse-grade errors. Update lift stations in the wastewater model, including most recent pump <br /> Page 2 of 8 <br />