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<br /> <br />P23-0480 and TR8680 Planning Commission April 23, 2025 <br />Page 18 of 31 <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. <br /> <br />The 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 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 diameter: Minimum slope: <br />4 inches 0.02 (lateral) <br />6 inches 0.005 (lateral) <br />8 inches 0.003 <br />10 inches 0.0025 <br />12 inches 0.0020 <br />15 inches or larger 0.0015 <br />g. Maximum manhole spacing = 350 feet <br />h. Minimum curvature for curved sewer mains: 200 feet or not less than recommended <br />by pipe manufacturer <br />i. Minimum pipe cover = 5 feet <br />j. Peaking factor shall be Peak Wet Weather Flow divided by Average Dry Weather flow <br />(PF = PWWF/ADWF). Minimum allowable PF = 2.0. <br />(Address this condition prior to improvement plan approval) <br /> <br />81. POTABLE WATER SYSTEM DESIGN STANDARDS: All permanent connections to the <br />City’s potable water network shall conform to Pleasanton Municipal Code §14.04.050. <br />Any required water pressure and/or flow needed by the applicant beyond that available <br />from the network at the point-of-connection shall be provided by the applicant as a private <br />improvement on the customer side of the meter or backflow prevention device. All <br />extensions or upgrades to the potable water network shall be designed to satisfy the <br />following minimum standards: <br />a. Minimum number of valves: <br />i. 3 at cross intersections <br />ii. 2 at “T” intersections <br />iii. 500 feet maximum spacing <br />iv. 1 valve at each fire hydrant lateral <br />v. Pressure regulating valve station required between pressure zones <br />b. Minimum number of fire hydrants (subject to approval by Livermore-Pleasanton <br />Fire Department (LPFD) Fire Marshal shall be in accordance with COA 110 below. <br />c. Minimum pipe size: 8-inch diameter <br />d. Minimum depth of cover over pipe: 42 inches <br />e. Blowoff requirements: <br />Docusign Envelope ID: 2B93F64A-C49E-4C2A-BF54-785F6FDA6546