Laserfiche WebLink
F. Calibrate Existing System Model to Field Data using Bentley's WaterCAD V8i software <br />1. Modify preliminary existing system model developed In Task E to account for Interim <br />infrastructure additions or changes to operation of distribution system. <br />2. Identify calibration period. <br />3. Perform steady -state calibration using hydrant flow test data. <br />4. Perform extended period simulation (EPS) calibration for a period of 48 hours. <br />5. Finalize 2012 existing system model scenarios <br />a. Steady State (Avg Day, Max Day, Peak Hour, Min Day, Max Day Fire Flow) <br />b. EPS (Max Day) <br />6. Prepare a technical memorandum summarizing the results of existing system model <br />development and calibration. <br />G. Existing System Regulatory Evaluation <br />1. Evaluate the existing distribution system with respect to current TCEQ rules regarding <br />distribution system operation and facility capacities and identify any areas not in <br />compliance or in danger of being out of compliance (i.e., within 10% of the relevant <br />criterion value) <br />2. Identify any areas that are projected to be out of compliance in view of rule changes <br />proposed or in promulgation to be placed into effect within the next five years, as of <br />January 2014. <br />H. Identify Operational Criteria <br />1. In conjunction with City staff, develop criteria for evaluation of improvements (these <br />criteria may include measures such as maximum allowable velocities, maximum <br />allowable head loss, minimum and maximum pressures, fire flow criteria, minimum <br />operational efficiencies and fiscal constraints). <br />2. Program hydraulic model to automatically test operational criteria compliance. <br />1. Develop Future Year Demand Distributions <br />1. Develop service population /connections projections for 2018, 2023, and 2033 and <br />associated system -wide demand projections based on current usage data. Population <br />and connections projections will be provided in GIS format by the City as part of its <br />Comprehensive Plan and the Texas Water Development Board's Draft Population <br />Projections and Municipal Water Demands Projections for the 2016 Regional Water <br />Plans (March 5, 2013). These data will then be distributed to model nodes <br />2. Estimate spatial distribution of projected demands based on known development plans <br />and other current trends. <br />J. Review and Comment on Water Design Criteria <br />1. Update City of San Marcos Water Design Criteria to meet current TCEQ regulations. <br />K. Develop and Run Future Year Model Scenarios <br />1. 2018 Demand Year <br />L Steady State (Max Day Fire Flow Availability) <br />ii. EPS (Max Day) <br />2. 2023 Demand Year <br />I. Steady State (Max Day Fire Flow Availability) <br />