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<br /> June 2024 1 City of Pleasanton <br />Tract 8569 (Ponderosa Homes) Hydraulic Analysis <br /> <br /> <br />June 4th, 2024 <br /> <br />City of Pleasanton, Engineering Department <br />P.O. Box 520, 200 Old Bernal Avenue <br />Pleasanton, CA, 94566 <br /> <br /> <br /> <br />Attention: Michael Stella, P.E./QSD <br /> Senior Civil Engineer, Land Development <br /> <br /> <br />Subject: Technical Memorandum – Hydraulic Analysis for Tract 8569 (Ponderosa Homes) <br />We are pleased to submit this technical memorandum documenting the hydraulic modeling and <br />analysis for Tract 8569 - Ponderosa Homes (Project). This analysis incorporates development <br />information received from the City of Pleasanton (City) Staff and utilizes the City’s distribution system <br />evaluation criteria. <br />The following memorandum documents the hydraulic analysis to determine if the existing and <br />proposed infrastructure adheres to the City’s design criteria for pipeline velocities, system pressures, <br />and the available fire flow. <br />1.0 PROJECT DEVELOPMENT <br />The Project consists of 30 single-family residential (SFR) lots south of Dublin Canyon Road near <br />Laurel Creek Road. The project has significant elevation changes (pad elevation ranges from 446 feet <br />to 596 feet) so an analysis was performed to determine the required infrastructure to connect to the <br />City’s Dublin Canyon Pressure Zone and the Moller 770 Pressure Zone. Appendix A contains the <br />water utility plan for the Project. <br />2.0 EVALUATION CRITERIA AND WATER USE FACTORS <br />The hydraulic analysis will utilize the City’s water system performance and design criteria to identify <br />system capacity deficiencies, size water mains, and determine impacts to storage reservoirs and <br />pump stations. Table 1 documents the performance and design criteria and includes peaking factors <br />and required fire flows for the development. <br />3.0 PROJECTED DOMESTIC WATER DEMANDS <br />The number of proposed units along with the domestic water demand factors were used to calculate <br />the water demands for the Project. A single-family residential water demand factor of 390 gallon per <br />day per unit was used for estimating the water demands for the Project. The average day demand <br /> <br />Smart Planning Our Water Resources <br />AKEL <br />ENGINEERING GROUP, INC.