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ARROYO LAGO RESIDENTIAL PROJECT ADDENDUM FCS 171 Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480036/Addendum/21480036 Arroyo Lago Residential Project Addendum.docx Prior FEIR Conclusions The Prior FEIR evaluated the addition of up to approximately 691 new residents,49 potentially increasing demand for recreational facilities as compared to existing conditions. However, the County Project would include a centrally located approximately 0.7-acre private park and approximately 0.5 mile of multiuse trails, designed to serve both new residents and the surrounding community, thereby reducing pressure on existing public parks. These amenities are integrated into the project design and would be constructed on-site, eliminating the need for new or expanded off-site recreational facilities, the impacts of which were fully evaluated in the relevant environmental topic areas throughout the Prior FEIR. The County Project would be subject to applicable development impact fees per Alameda County requirements, which would further support maintenance and improvements to existing and planned facilities. Additionally, the Prior FEIR determined that both the County and the City currently exceed their park service standards of 5 acres of parkland per 1,000 residents. Therefore, the Prior FEIR concluded that impacts would be less than significant. (Draft EIR, pp. 3.15-7 -3.15-9, 6-20). Proposed Project Analysis and Conclusion Residents of the proposed project during operation would have access to local parkland operated by the City, as well as nearby regional parkland operated by the East Bay Regional Parks District (EBRPD). As described in the Prior FEIR, the EBRPD and the City each have a target park service standard of at least 5 acres of parkland per 1,000 residents. The EBRPD currently provides approximately 109 acres of parkland per 1,000 residents, while the City provides approximately 5.09 acres per 1,000 residents.50,51,52 As the EBRPD and the City both currently exceed their target park service standards, the estimated 588 new residents 53 that would result from the proposed project would not be enough to trigger an increase in use of these existing facilities such that substantial physical deterioration of such facilities would occur or be accelerated. Additionally, consistent with the County Project, the proposed project would include an approximately 0.7-acre private park with a Public Access Easement, as well as approximately 0.5 acre of multiuse trails, the construction of which would be subject to relevant local policies and regulations; as discussed above, the potential environmental impacts of these recreational amenities were fully evaluated in the relevant environmental topic areas throughout the Prior FEIR. 49 (194 units + 49 junior ADUs) * 2.84 (County’s average persons per household) = approximately 691 persons 50 East Bay Regional Park District (EBRPD). 2026. About Us. Website: https://www.ebparks.org/about-us. Accessed March 10, 2026. 51 California Department of Finance (DOF). 2025. E-5 Population and Housing Estimates for Cities, Counties, and the State, 2020-2025. Website: https://dof.ca.gov/Forecasting/Demographics/Estimates/e-5-population-and-housing- estimates-for-cities-counties-and-the-state-2020-2025/. Accessed March 10, 2026. 52 City of Pleasanton. 2022. Program Environmental Impact Report City of Pleasanton 2023-2031 (6th Cycle) Housing Element Update. Website: https://files.ceqanet.lci.ca.gov/277712-3/attachment/-bwD- NIbsCtS27yQFn3dCFDFxvAATXvXAuUCWntLOWyyE9xYwOCV3-nixSHdoCaK6829Yoe_cKtAK_Xs0. Accessed March 10, 2026. 53 (189 units + 48 junior ADUs) * 2.48 (City’s average persons per household) = approximately 588 persons