PC-2026-08 - Laserfiche WebLink

City of Pleasanton—Hidden Canyon Residences and Preserve Project Final EIR Responses to Written Comments FirstCarbon Solutions 3-27 https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480016/EIR/4 - Final EIR/21480016 Sec03-00 Responses to Written Comments.docx Local Agencies Dublin San Ramon Services District (DSRSD) Response to DSRSD-1 This comment provides introductory remarks and is included in the administrative record. The comment did not provide new, substantial evidence with respect to the disposition of significant environmental impacts evaluated in the Draft EIR. Therefore, no further response is required. Response to DSRSD-2 Wastewater treatment and conveyance services for the proposed project would be provided by the City. The City owns and operates sanitary sewer lines throughout the City, and conveys wastewater to the DSRSD regional Wastewater Treatment Plant (WWTP). Through a contract agreement with the City, DSRSD provides wastewater treatment services to the City. As discussed in Draft EIR Section 3.15, Utilities and Service Systems, page 3.15-15, DSRSD’s Recycled Water Treatment Facility (RWTF) provides primary, secondary, and tertiary wastewater treatment, and has an average dry-weather wastewater flow (ADWF) design capacity of 17 million gallons per day (mgd). The City is currently entitled to half of this treatment capacity, or 8.5 mgd. At the time of the last General Plan Amendment, the City’s average annual wastewater flow was approximately 6 mgd. Thus, the current 8.5 mgd wastewater treatment capacity is sufficient to serve the City’s planned buildout growth as anticipated in the City’s General Plan, including the City’s updated Housing Element adopted in 2023, which included the project site as a Housing Element Opportunity site. In their comment in response to review of the Draft Program EIR for the 2023-2031 Housing Element (SCH Number 2022040091), DSRSD stated, “the RWTF serving the City would have adequate capacity to treat the potential increase in wastewater flow associated with Housing Element requirements.” DRSD further indicated that an update to the 2017 RWTP Master Plan was planned for 2024 that would evaluate changed conditions that may impact future loading capacity. As of the preparation of the Final EIR for the proposed project, this update has not been completed. The City shall participate in a wastewater loading study with the DSRSD to assure that the proposed project’s generated wastewater would be sufficiently treated given existing treatment capacity.1 As part of its ongoing master planning process, DSRSD will identify actions that will need to be implemented to accommodate the increased loading generated by customers within its service area through the future planning horizon year (2050). Any identified changes to the DSRSD treatment process will be funded through increases in customer service rates and through connection fees imposed upon future projects, including the proposed project. The proposed project would be required to pay applicable fees to reflect its fair share contribution to the DSRSD in support of maintenance of its existing facilities and any planned equipment or process refinements identified as part of its master planning. Further, as stated on page 3.15-18 of the Draft EIR, the proposed project would generate approximately 0.01 mgd of wastewater flows. This amount of wastewater generation would represent approximately 0.1 percent of the DSRSD RWTF treatment capacity that the City is entitled to. The proposed project, in combination with the most recent wastewater flow estimates, would 1 Personal email communication with Jackie Yee on behalf of the Dublin San Ramon Services District (DSRSD) on February 2, 2026.