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<br /> <br /> <br /> <br />P22-1089, PUD-147, Tract 8522 PC-2024-14, June 26, 2024 <br /> <br />31 <br /> <br />payment for said work has been received from the subdivider. (Address this condition <br />prior to acceptance of improvements) <br /> <br />76. STORMWATER HYDRAULICS: The City’s storm drainage network has been designed in <br />accordance with the Alameda County Hydrology and Hydraulics Manual published by the <br />Alameda County Flood Control & Water Conservation District. Said manual is available <br />for download at: <br /> <br /> https://acfloodcontrol.org/the-work-we-do/the-work-we-do-hydrology-manual/ <br /> <br />The City is located in Zone 7, and its storm drain pipe network is considered a secondary <br />facility. Any connections to, additions, or upgrades to the City’s pipe network shall be <br />designed in accordance with the manual. Calculations submitted for review/approval shall <br />be presented in a format consistent with the “Calculation Form – District Rational Method” <br />available in the manual. The calculations shall demonstrate adequate freeboard given the <br />design storm event assuming all bioretention areas are overflowing. Said calculations <br />shall be prepared, stamped, and signed by a California-licensed civil engineer. (Address <br />this condition prior to plan approval) <br /> <br />77. SANITARY SEWER DESIGN STANDARDS: Connections to the City’s sanitary sewer <br />network shall conform to Pleasanton Municipal Code Title 15 “Sewerage”. All buildings <br />inhabited by human beings which are not more than 250 feet from the City’s sewer <br />network shall be connected. All premises, parcels, and/or lots shall have independent <br />connections to the City’s sewer network except under the following conditions: <br /> <br />If a private on-site treatment system has been authorized by both the City and Alameda <br />County Department of Environmental Health. <br /> <br />If multiple premises are located on a single parcel or lot which cannot be subdivided and <br />are all under one ownership. <br /> <br />Public sanitary sewer system shall be designed to satisfy the following minimum <br />standards: <br />a. Minimum Manning Coefficient (n) within the pipe = 0.013 <br />b. Minimum flow velocity = 2 feet per second at least once per day <br />c. Maximum flow velocity = 10 feet per second <br />d. Maximum depth of flow to pipe diameter (d/D) = 0.75 for dry weather flow <br />conditions <br />e. Minimum pipe sizes: <br />i. Laterals = 4 inches diameter <br />ii. Main = 8 inches diameter <br />iii. Force main = 6 inches diameter <br />f. Minimum slope per table: <br />Pipe size in <br />diameter <br />Minimum slope