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<br /> December 2022 1 City of Pleasanton <br />Stoneridge Apartments Project Hydraulic Analysis <br /> <br /> <br />December 8, 2022 <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 – Stoneridge Apartments Project Hydraulic Analysis <br />We are pleased to submit this technical memorandum documenting the hydraulic modeling and <br />analysis for the Stoneridge Apartments Project (Project). This analysis incorporates development <br />information received from 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 proposed <br />infrastructure adhere to the City’s design criteria for pipeline velocities and system pressures. <br />1.0 STONERIDGE APARTMENTS DEVELOPMENT <br />The Stoneridge Apartments Project consists of 360 multi-family residential dwelling units on a 6-acre <br />site. The Stoneridge Apartments are located at 1008 Stoneridge Mall Road and will to connect to the <br />City’s Lower Pressure Zone. Appendix A contains the site plan and proposed water main <br />realignments for the Stoneridge Apartments 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, for sizing water mains, and determining impacts to storage reservoirs <br />and pump stations. Table 1 documents the performance and design criteria and includes peaking <br />factors and required fire flows for the development. <br />3.0 STONERIDGE APARTMENTS DOMESTIC WATER DEMANDS <br />The number of multi-family units along with the water use factors were provided by Kimley-Horn staff <br />and used to calculate the water demands for the Project. The average day demand (ADD) is <br />estimated at 50.0 gpm and the maximum day demand is estimated at 95 gpm (1.90xADD). The <br />development demand summary is documented on Table 2. <br /> <br />Smart Planning Our Water Resources