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Water Distribution System Hydraulic Model Calibration and System Evaluation Report <br /> Chapter 1 – Introduction <br /> December 2019 <br /> <br /> <br />P05049-2019-000 Page 1 <br /> <br />CHAPTER 1 INTRODUCTION <br />A water distribution system has one primary purpose, to effectively deliver safe drinking water <br />from the source (or treatment facility) to the customer. The City of Arden Hills (Arden Hills) <br />has recognized the need to model their water distribution system, and has retained Advanced <br />Engineering and Environmental Services, Inc. (AE2S) to develop a calibrated hydraulic model. <br />1.1 Organization of the Water Distribution System Hydraulic <br />Model Calibration and System Evaluation Report <br />The Report herein provides a comprehensive assessment of the water distribution components, <br />issues, and improvements required to address system issues. Chapter 2 summarizes background <br />information related to the water distribution system providing the reader with a general <br />understanding of the water system layout. Chapter 3 describes how the hydraulic model was <br />assembled and calibrated for the existing water distribution system. Chapter 4 describes <br />existing system demands and the development of demand patterns for use within the hydraulic <br />model. Chapter 5 and Chapter 6 describe the process of performing fire flow and hydraulic <br />grade testing and calibration of the hydraulic model. Chapter 7 describes some ways the <br />hydraulic model could potentially be used as a tool. <br />1.2 Acknowledgements <br />Special thanks must be extended to the staff of the City of Arden Hills. The Arden Hills <br />Distribution System staff provided valuable data on booster station pumping operation and <br />water storage levels, as well as greatly needed assistance in operation of hydrants and data <br />collection during the fire flow testing. WSB provided the basis for development of the <br />hydraulic model by supplying the GIS platform. The Finance Department provided water usage <br />data from customer billing records. <br />