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Below is the evaluation summary for the 20404 State Route 99 Irrigation Well (APN 22806018) -well permit application. The evaluation, with assumptions as noted, indicates that the proposed Irrigation well is located in an area of low domestic/residential well density (1 well per section), General Plan designation AG (0.0— 0.05 Dwelling units per acre) but is not likely to interfere significantly with existing off-site wells, create unreasonable groundwater level declines/reductions in aquifer storage or to create issues with infrastructure due to subsidence and it can be approved pending any other issues that you might have with the application. Summary: - The applicant proposes: well depth of 300 feet, a well grout seal of 200 feet with extraction rate —200 GPM with anticipated pumping schedule 2,400 Gal/day in a 33.85 acre lot. - Proposed new well is in an area of AG (0.0—0.05 Dwelling units per acre) well density (36 wells per section). At least one domestic well is located approximately 1000 feet Southwest of the proposed Ag well. - Based on the extraction rate of 200 GPM, The Theis drawdown chart predicts less than 5 feet of drawdown if the well is more than 1 foot away from proposed well. - Online databases do not specify any irrigation wells located within 2,000 feet of the proposed well location. Review of aerial imagery indicates an irrigation well is present approximately 1900 feet Southeast. - Groundwater levels estimated by DWR well data range between 30 (10/09/1991) to 61 (10/24/2022) foot below ground surface over the past fifty years.Water levels fluctuate approximately 1 to 6 feet between seasonal high and low levels. - The permit application proposes a minimum well casing/grout seal of 200 feet and appears to target the Modesto-Riverbank aquifer with water-bearing zones anticipated to be under unconfined to locally confined conditions. - The annual total extracted volume is estimated to be approximately 33 million gallons, a peak pumping rate of 394 GPM, and an annualized/seasonal pumping rate of approximately 131 GPM. - The aquifer volume below the 33.85-acre parcel contains an estimated 2,285 acre-feet of water storage.The proposed extraction volume of 101.55 acre-feet per year is approximately 4.4%of the estimated aquifer storage beneath the parcel without regard to recharge each season and is considered sustainable. - The proposed well is not located within the extents of the Corcoran Clay, subsurface water- bearing sediments are semi-consolidated to consolidated, and the proposed well is not located in an area where subsidence is currently indicated, therefore subsidence is unlikely to be of significance or to create issues.