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Page 18 <br />Manual on Uniform Traffic Control Devices (CA MUTCD), latest editions. The City also references <br />design standards from “A Policy on Geometric Design of Highways and Streets” (latest edition) <br />as published by the American Association of State Highway and Transportation Officials <br />(AASHTO). Any deviations from standards must be approved by the City Engineer. (Address this <br />condition prior to issuance of any Building Permits) <br />91.GEOTECHNICAL RECOMMENDATIONS: Recommendations from the project’s geotechnical <br />investigation, as prepared by a California-licensed Geotechnical Engineer or Certified <br />Engineering Geologist, shall be incorporated into the design of the improvements and/or explicitly <br />noted on the plans. The author(s) of the geotechnical investigation shall certify on the plans that <br />the design complies with their recommendations. During construction, the applicant must follow <br />all recommendations. (Address this condition prior to issuance of any Building Permits) <br />92. DATUM FOR VERTICAL CONTROL: Vertical control surveying for all improvements to be <br />constructed shall be based on the North American Vertical Datum of 1988 (NAVD 88). Any <br />benchmarks used that relied on the National Geodetic Vertical Datum of 1929 (NGVD 29) shall <br />be converted to NAVD 88 when presented on plans. The location of the benchmark and source <br />of data must also be disclosed on the plans. (Address this condition prior to issuance of any <br />Building Permits) <br />93. 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 for <br />download at: <br />https://acfloodcontrol.org/the-work-we-do/the-work-we-do-hydrology-manual/ <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 designed <br />in accordance with the manual. Calculations submitted for review/approval shall be presented <br />in a format consistent with the “Calculation Form – District Rational Method” available in the <br />manual. The calculations shall demonstrate adequate freeboard given the design storm event <br />assuming all bioretention areas are overflowing. Said calculations shall be prepared, stamped, <br />and signed by a California-licensed civil engineer. (Address this condition prior to issuance of any <br />Building Permits) <br />94. EMERGENCY OVERLAND STORMWATER FLOW/SUMP PROPERTIES: All properties shall <br />be designed with an emergency overland flow path to direct storm runoff to the nearest public <br />street or open flood control facility in the event on-site pipes become plugged. The flow path <br />shall be lower than the finish floor elevation of all habitable structures. The flow path cannot rely <br />on neighboring properties unless a storm drain easement across the neighbor is obtained. <br />Sump properties must be designed to discharge the 50-year recurrence interval storm event <br />through the pipe network before habitable structures become inundated. (Address this condition <br />prior to issuance of any Building Permits) <br />95. UTILITY ENCLOSURES: Proposed utility enclosures including vaults, meter boxes, splice <br />boxes, and pedestals shall be installed in the public right-of-way, in a public service easement <br />(PSE), or in a utility company specific easement. The locations for utility enclosures shall be