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16 Groundwater flow in the subbasin is generally from west-southwest to east-northeast, from the edge of the Santa Cruz Mountains to San Francisco Bay. Both the southern and eastern edges of the subbasin are political boundaries that are roughly coincident with County lines, rather than physical hydrogeologic barriers to groundwater flow. Depending upon temporally varying streamflow, recharge, and pumping conditions, groundwater flow likely occurs in variable directions across each boundary. A preliminary assessment of groundwater production potential for the City found that sufficient groundwater supply may be available for the City to use as a back-up supply. The portion of the subbasin underlying the City is in a state of equilibrium and water quality is expected to be sufficient for municipal and irrigation uses, though some level of treatment may be required. Additional discussion of the groundwater conditions and groundwater management is provided in the City’s 2020 UWMP. 5.4 Recycled Water Supply The City has been supplying recycled water to its customers since 2000. The City owns, operates, and maintains a wastewater collection system that serves residential and commercial customers throughout Redwood City. The collected wastewater is treated at a wastewater treatment plant that is operated by SVCW. The resulting recycled water is delivered into City-owned and operated storage tanks for use in the City’s recycled water system. Phase I of the City’s recycled water project was implemented by 2010 and is currently serving more than 450 points of connection along the area east of Highway 101 in Redwood Shores, the Greater Bayfront Area, and the Seaport Area. Phase II of the City’s recycled water project is underway and will serve customers located west of Highway 101, including in the Downtown area. As of 2021, Phase II-A of the recycled water system was completed and extended the City’s service along Walnut Street from Highway 101 to Marshall Street. Also, as part of Phase II, the recycled water system was extended along East Bayshore Road from Seaport Avenue to Douglas Avenue, and along Broadway to the Stanford in Redwood City project. The Proposed Project is located within the City’s recycled water service area. Municipal Code Section 38.52 requires that new apartments/condominiums and new commercial projects within the City’s recycled water service area that require a subdivision or City permit “shall be conditioned to be dual plumbed to provide for the internal use of recycled water and to provide for the use of recycled water for landscape irrigation [in common areas only for residential projects]. The City Manager (or designee) will determine requirements for recycled water plumbing. These requirements and the use of recycled water will become conditions of approval.” Construction dust control must also use recycled water. As described in Section 2.2, the potable/recycled water ratio for indoor water use is estimated to be 20/80 percent for office and R&D Laboratory uses and 70/30 percent for residential uses, based on historical meter readings for existing dual plumbed projects. The City’s recycled water project has a current theoretical supply capacity of 2,857 AFY, with potential expansion, when demand warrants, to its design capacity of up to 3,238 AFY of average annual demand and includes the ATTY/RESO.0027/CC RESO WATER SUPPLY ASSESSMENT (920 SHASTA) - EXHIBIT A REV: 04-22-25 VR Page 16 of 42