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D2. Dry Weather Calibration <br />Select dry weather calibration event to isolate projected flows as primarily domestic <br />contributed flows. Develop flow meter schematic showing which sewer basin and metered <br />subbasins feed into each sewer interceptor for model analysis and data output review. Perform <br />dry weather calibration on selected dry weather flow event using calibrated flow volume by <br />adjusting antecedent conditions, per capita flows, diurnal curves and dry weather infiltration. <br />Adjust lift station parameters and perform testing as required based on system response <br />observed during calibration event using SCADA records and meter responses. Engineer shall <br />prepare mapping and profiles at selected calibration points showing metered vs. modeled dry <br />weather calibration. <br />D3. Wet Weather Calibration <br />Review flow meter data and select wet weather calibration storm event. Perform wet weather <br />calibration on selected wet weather flow events using calibrated peak 1 /1. Adjust model <br />parameters to calibrate flow velocity and flow depth. Adjust lift station parameters based on <br />system response observed during calibration events using SCADA records and meter responses. <br />Prepare mapping and profiles at selected calibration points showing metered vs. modeled wet <br />weather calibration results. <br />D4. Model Calibration Technical Memorandum (TM -3) <br />FNI will prepare and submit five (5) copies of a technical memorandum, TM -3, summarizing the <br />results of dry and wet weather model calibration. <br />D5. Workshop #2: Review Model Calibration (TM -3) and Input for Comprehensive Plan <br />FNI will meet with the City to discuss the results of the wastewater collection system model <br />calibration. Input to the City's Comprehensive Plan will be provided based on existing <br />wastewater system conditions. City comments will be solicited and addressed. <br />Summary of Deliverables <br />• TM -1: Flow Monitoring Results <br />• TM -2: Model Development <br />• TM -3: Model Calibration <br />• Electronic files of Geodatabase and Wastewater Model <br />Summary of Workshops <br />• Workshop #1: Review Flow Monitoring (TM -1) and Model Development (TM -2) <br />• Workshop #2: Review Model Calibration (TM -3) and Input for Comprehensive Plan <br />Additional Services <br />• Extension of temporary flow monitoring beyond 60 days <br />• Surveying and GPS shots for manhole rim and invert elevations <br />• Purchase of modeling software <br />WW Master Plan Engineer Services (Engineering Services) — February 2012 <br />15 <br />