Planning Commission Meeting Agenda Packet 06242026

P25-0116. P25-0116, P25-0018, PUD-154 and Tract 8123 (Arroyo Lago) Planning Commission 10 of 22 In addition, ADA curb ramps and crosswalks shall be constructed on the north, south and east legs of the roundabout at the intersection of Street A and Street F . Zone 7 Easement The above-described trail extension, as well as the utility connection described below, are proposed to run through property owned by the Zone 7 Water Agency (Zone 7) north of the Village at Ironwood and adjacent to the Ironwood subdivision. This requires the applicant to secure easement rights to construct improvements on land owned by Zone 7 or enter into an agreement with the City to make this work feasible, as is common under the Subdivision Map Act (Government Code §§ 66410, et seq.). Infrastructure Improvements Water Water service for the Project would be provided by the City via connections to an existing 12- inch-diameter water line along Busch Road and an existing 16-inch-diameter water line on Mohr Avenue to the west, connected through the proposed Zone 7 easement. The Project plan shows a proposed 8-inch diameter water line for these connections. To determine adequate water supply flow for the Project, a Hydraulic Analysis was prepared by Akel Engineering Group, Inc. The Akel report analyzed the existing system and recommended that a 12 -inch line is needed instead of the proposed 8-inch line. A condition of approval has been added to address this item. Sanitary Sewer Sanitary sewer conveyance for the Project would be provided by the City via connection to an existing off-site 8-inch-diameter sewer line on Mohr Avenue. The Project would construct a new 8-inch-diameter sewer line extending from the northwest corner of the project site, following the existing utility road on land owned by Zone 7 to Mohr Avenue. Connecting the sanitary sewer line requires an easement from Zone 7, which will be procured by the Applicant or may be secured by the City in accordance with the Subdivision Map Act . Dublin San Ramon Service District (DSRSD) provides sanitary sewer services to Pleasanton. Sewage would be treated at the Dublin San Ramon Sanitary District (DSRSD) facility in Pleasanton. At DSRSD's request, the applicant is partially funding an evaluation of WWTP upgrades to address new permitting mandates, which will be used to establish project-specific impact fees for this development. Stormwater and Bioretention Stormwater generated by the Project would be collected via storm gutters along the proposed internal streets and conveyed through on-site 18-inch underground storm drainpipes. Stormwater would then be conveyed easterly through an approximately 45-inch-diameter underground pipe located on the adjoining land, also owned by USL, to a proposed primary bioretention area located approximately 0.45 miles east of the project site, adjacent to El Charro Road. The primary bioretention area would include a treatment area of approximately 40,000 square feet. The bioretention area would contain two layers: an approximately 18 -inch layer of bioretention soil mix and an approximately 12-inch layer of Class II permeable rock. After treatment, the stormwater would be pumped from the bioretention basin into a storm drain