CITY COUNCIL REGULA MEETING AGENDA PACKET _Revised_ 6-2-26

Ordinance No. 2306 Page 17 of 35 Page 17 of 35 The City is located in Zone 7, and its storm drain pipe network is considered a secondary facility. Any additions or upgrades to the City’s pipe network shall be designed in accordance with the manual. Calculations submitted for review/approval shall be presented in a format consistent with the “Calculation Form – District Rational Method” available in the manual. Said calculations shall be prepared, stamped, and signed by a California-licensed civil engineer. (Address this condition prior to improvement plan approval). 51. EMERGENCY OVERLAND STORMWATER FLOW/SUMP PROPERTIES: All properties shall be designed with an emergency overland flow path to direct storm runoff to the nearest public street or open flood control facility in the event on-site pipes become plugged. The flow path shall be lower than the finish floor elevation of all habitable structures. The flow path cannot rely on neighboring properties unless a storm drain easement across the neighbor is obtained. Sump properties must be designed to discharge the 50-year recurrence interval storm event through the pipe network before habitable structures become inundated. 52. STORM WATER ENERGY DISSIPATION. The drainage design relies on storm discharges onto unprotected natural hillside slopes. To reduce erosion potential, the storm drain system shall be designed to dissipate energy and reduce flow velocity to less than 6 feet-per-second at the discharge end of all outfalls. (Address this condition prior to improvement plan approval). 53. PRIVATE STORM DRAIN EASEMENTS. Private storm drain easements shall be granted across the western portion of Lot 30 for the benefit of Lot 29 and Parcel C, and across Lot 29 for the benefit of Parcel C. The easements shall assure that storm runoff within Devany Creek can flow unobstructed across these properties to the Dublin Canyon Road culvert. Maintenance of the creek shall be the obligation of each property owner, unless this obligation is transferred to the homeowner’s association. (Address this condition prior to subdivision map approval). 54. POTABLE WATER. The potable water distribution system within the subdivision shall be designed in accordance with the Hydraulic Analysis prepared by Akel Engineering Group dated June 2024, specifically “Alternative 3 – Moller 770 Connection”, although Lots 29 and 30 shall be connected to the Dublin Canyon Pressure Zone. Said system shall be publicly owned and maintained by the City. Appropriate Public Service Easements shall be granted across roads and access pathways to allow maintenance access to these facilities. (Address this condition prior to subdivision map approval). The City’s Utility Division requires a water inter-tie on Dublin Canyon Road between the Dublin Canyon Pressure Zone and the Moller 770 Pressure Zone so the subdivision can be temporarily fed from the Dublin Canyon zone if service from the Moller zone is interrupted. Final design and coordination of the inter-tie is subject to the Utility Division review and comment during the permitting phase. (Address this condition prior to plan approval). Page 40 of 617