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WOODARD <br /> &CURRAN <br /> Table 6: Groundwater Production Well Capacities and Annual Yields <br /> Existing Maximum Pumping Capacity <br /> Well Number&Status Measured Flow Rate pm Estimated Annual Yield AF l <br /> Well Active 1,650 1,330 <br /> Well 7 Active 1,400 1,130 <br /> Well 8 Active 1,100 890 <br /> Well 10 Active 1,700 1,370 <br /> Subtotal 5,850 4,720 <br /> LAWTF Treatment Capacit 2 6,250 5,850 <br /> Well 21 (Inactive since 2013)3 1,500 1,210 <br /> Well Current) inactive 1,400 1,130 <br /> Current Well Ca acit 4 5,850 4,720 <br /> Possible Future Well Ca acit 5,6 8,750 7,060 <br /> Source: City of Lathrop 2019 WSMP,Table 5-3(EKI,2019) <br /> Notes: <br /> 1. Assumes wells are operated at 50%maximum capacity on an annual basis. <br /> 2. Maximum capacity of LAWTF is 6,250 gpm.Estimated annual yield assumes that annual yield of Wells 6-10 is not limited by LAWTF <br /> capacity on an annual basis. <br /> 3. The City is considering upgrading Well 21 and its water treatment facility over multiple phases to be able to utilize its full capacity. <br /> 4. Does not include Well 21 or Well 9 and is limited by LAWTF design capacity. <br /> 5. Assumes that the Well 21 upgrades have been completed and Wells 9 and 10 are treated at the Well 21 Water Treatment Facility. <br /> This includes the full capacity of Wells 6-10 and Well 21. <br /> 6. While these numbers are consistent with the City of Lathrop 2019 WSMP,relocation or modifications to Wells 9 and 21 to allow <br /> pumping from locations within the aquifer with reduced PFAS or other CDCs may likely result in lower production rates from these <br /> wells.Because a solution has not been confirmed,water from Well 9 and Well 21 are identified as Possible Future Well Capacity. <br /> Califia(0011533.00) 15 Woodard&Curran, Inc. <br /> River Islands Phase 2 Development Water Supply Assessment September 2020 <br />