14 ATTACHMENT 6 - Appendix A - E

City of Pleasanton–Spotorno Ranch Reduced Development Project Project Description Initial Study/Addendum 38 FirstCarbon Solutions https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480021/Consistency Checklist/21480021 Spotorno Ranch Consistency Checklist ScreenCheck.docx The proposed project would include a 12-inch-diameter water pipeline that would extend along Spotorno Ranch Drive, providing connections to each home site. The water supply system would connect to an existing 12-inch potable water line that is located within Alisal Street and Westbridge Lane, and which is owned and maintained by the City of Pleasanton. An 8-inch sewer main would be routed within the Spotorno Ranch Drive, with lateral connections to each home site. The sewer system would connect to an existing 8-inch sewer line located within Alisal Street, which is owned and maintained by the City of Pleasanton. Two separate storm drain systems would be constructed within the Spotorno Flat Area, ranging in diameter from 8 to 36 inches in diameter. One storm drain system would collect runoff from lots and streets, and would discharge stormwater directly to the treatment pond on Parcel A for stormwater treatment and flood mitigation. A second system (bypass system) would collect runoff from the upland area and the subdivision areas that do not require further treatment. The two systems would converge downstream of the Parcel A treatment pond and would connect to an existing 36-inch culvert under Alisal Street, although runoff in the bypass system may be diverted into the treatment pond under high flow storm conditions as approved by the City in the stormwater management plan. Stormwater on Lots 13-15 would be treated by on-site bioretention and would be discharged directly to Westbridge Lane through curb drain systems, or similar conveyance. Pacific Gas and Electric Company (PG&E) would supply undergrounded electrical services to all proposed residences. Natural gas is not proposed to be supplied to this project. Electrical service is generally provided by way of a 12-kilovolt, three-phase overhead line system located along the Happy Valley loop roads.11 Further expansion of this system would be the responsibility of PG&E, with the costs shared by PG&E and the project developer. Telephone service would be provided by Pacific Bell Telephone Company. Cable service would be provided by Comcast/Xfinity. Costs for the installation of these services would be shared by the providers and the project developer.12 2.3.7 - Visual Characteristics New residences would be designed and constructed in conformance with the HVSP and the design guidelines to be approved by the City Council as part of the Planned Unit Development. The design guidelines are intended to maintain the rural character that defines the HVSP (see discussion under Section 2.2.3, above). In accordance with the design guidelines, there would be relatively large spacing between each home (50 feet minimum). Houses would be built on lots with a minimum size of one acre, and homes would be either 1- or 2-story, with a maximum height of 30 feet for 2-story homes, 24 feet for 1-story homes, and 25 feet for an ADU. Accessory structures would be allowed to have a maximum building height of 15 feet. Fences would be no greater than 6 feet in height, and would be constructed in a style that complements the project’s semi-rural setting. 11 City of Pleasanton. 1998. Happy Valley Specific Plan. Page 77. 12 City of Pleasanton. 1998. Happy Valley Specific Plan. Page 78.