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State of California <br /> Well Completion Report <br /> Form DWR 188 Submitted <br /> WCR2025-012068 <br /> Owner's Well Number: Date Work Began: 12/11/2025 Date Work Ended: 1211212025 <br /> Local Permit Agency: San Joaquin County Environmental Health Department County: San Joaquin <br /> Secondary Permit Agency: Permit Number: WP2501377 Permit Date: 12/03/2025 <br /> Well Owner(must remain confidential pursuant to Water Code 13752) Planned Use and Activity <br /> Name: MICHAEL&MANDY SERRANO Activity: New Production or Monitoring <br /> Business Name: Well <br /> Address: 10499 S MANTHEY RD Planned Use: Water Supply <br /> Water Supply: Domestic <br /> City: LATHROP State: California Zip: 95330 <br /> Well Location <br /> Address: 10499 S MANTHEY RD APN: 19333004 <br /> City: LATHROP Zip: 95330 Township: ql-� Range: 06E <br /> Section: 11 BM: Mount Diablo <br /> Latitude: 37 Deg.51 Min.40.428 Longitude: -121 Deg.16 Min.52.698 <br /> Sec.N Sec.W Ground Surface Elevation: 23 <br /> Dec.Lat.: 37.86123 Dec.Long.: -121.281305 Elevation Accuracy: Unknown <br /> Vertical Datum: Horizontal Datum: Elevation Determination Method: Digital Aerial <br /> Photo <br /> Location Accuracy: >50 Ft Location Determination Method: <br /> GPS <br /> Borehole Information Water Level and Yield of Completed Well <br /> Orientation: Vertical #of casings(Specify): 1 Depth to first water: (Feet below surface) <br /> Drilling Method: Direct Rotary Drilling Fluid: Bentonite Depth to Static Water Level: 26 Feet <br /> Total Depth of Boring: 295 Feet Date Measured: 12/17/2025 <br /> Total Depth of Completed Well: 210 Feet Estimated Yield*: (GPM) Test Type: Air Lift <br /> Test Length*: Hours Total Drawdown: JEeet <br /> *May not be representative of a well's long term yield. <br /> Geologic Log-Free Form <br /> Depth from Surface <br /> Description <br /> (Feet to Feet) <br /> 0 2 TOP SOIL <br /> 2 4 CLAY <br /> 4 5 SAND <br /> DWR Form 188 rev 10/09/2025 Page ] of 3 <br />