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Ordinance No. Page 26 74. POTABLE WATER SYSTEM DESIGN STANDARDS: All permanent connections to the City's potable water network shall conform to Pleasanton Municipal Code §14.04.050. Any required water pressure and/or flow needed by the applicant beyond that available from the network at the point-of-connection must be provided by the applicant as a private improvement on the customer side of the meter or backflow prevention device. All extensions or upgrades to the potable water network shall be designed to satisfy the following minimum standards: a. Minimum number of valves: i. three at cross intersections ii. two at"T" intersections iii. approximately 500 feet maximum spacing iv. one valve at each fire hydrant lateral v. Pressure regulating valve station required between pressure zones b. Minimum number of fire hydrants (subject to approval by Livermore-Pleasanton Fire Department (LPFD) Fire Marshal: i. one hydrant within approximately 250 feet of any existing or proposed structure ii. two hydrants within approximately 500 feet of any commercial, multi- family residential, industrial, or school building C. Minimum pipe size: i. approximately six-inch diameter for any line ii. approximately eight-inch diameter for straight runs longer than approximately 1,000 feet d. Minimum depth of cover over pipe: approximately 42 inches e. Blowoff requirements: i. At all dead ends whether temporary or permanent ii. At all low points in the line (Address this condition prior to plan approval) 75. UTILITY ENCLOSURES: Proposed utility enclosures including vaults, meter boxes, splice boxes, and pedestals shall be installed in the public right-of-way, in a public service easement (PSE), or in a utility company specific easement. The locations for utility enclosures shall be considered in the following order of preference: (1) PSE area behind public sidewalk; (2) parkstrip area between the roadway curb & gutter and the sidewalk; (3) within the public sidewalk set flush to grade; (4) within driveway approach areas set flush to the surface with traffic-rated lids. In no case shall an above-ground pedestal or utility cabinet obstruct sight-line visibility for vehicle drivers at intersections or driveways. Above-ground pedestals or utility cabinets are preferred within the side-yard area of a corner residential lot rather than the front-yard. Deviations from this standard must be approved by the City Engineer. (Address this condition prior to plan approval)