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<br />Page 23 <br /> <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 />iv. Minimum pipe cover = 5 feet <br />i. Peaking factor shall be Peak Wet Weather Flow divided by Average Dry Weather flow <br />(PF = PWWF/ADWF). Referring to the City’s Wastewater Master Plan from August <br />2007, PF shall be the average of the three events shown on Table 4.5 “Inflow and <br />Infiltration Analysis” for each subbasin. The Basin I.D. is from Figure ES-3. Minimum <br />allowable PF = 2.0. <br />j. Backflow prevention devices must be installed if the lowest plumbing fixture if the <br />building is lower than the downstream cleanout overflow device or manhole to assure <br />effluent discharge outside of the building in case the downstream pipe network <br />becomes obstructed. <br />k. Fats, Oils, and Grease (FOG) controls: Discharge of FOG to the City’s sanitary sewer <br />system shall conform to Pleasanton Municipal Code Chapter 15.44. In addition to <br />other controls, a sampling manhole must be provided immediately downstream of any <br />grease interceptor in accordance with City Standard Drawing 402. <br />l. (Address this condition prior to plan approval) <br /> <br />99. SANITARY SEWER NETWORK: Fees are due to both the City of Pleasanton and DSRSD for <br />new connections to the sewer network. Said fee amounts appear in the City’s Adopted Master <br />Fee Schedule. (Address this condition prior to plan approval) <br /> <br />100. POTABLE WATER SYSTEM DESIGN STANDARDS: All permanent connections to the City’s <br />potable water network shall conform to Pleasanton Municipal Code §14.04.050. Any required <br />water pressure and/or flow needed by the applicant beyond that available from the network at <br />the point-of-connection must be provided by the applicant as a private improvement on the <br />customer side of the meter or backflow prevention device. All extensions or upgrades to the <br />potable water network shall be designed to satisfy the 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