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ekienvironment <br /> & water <br /> Reference Depth to <br /> Point Ground Water Ground Water Groundwater <br /> Well Measured Water Level Elevation <br /> Elevation (feet below Elevation (feet <br /> Names By Measurement Date Change from <br /> (feet MSL, reference MSL, NAVD 88) 2022 Fall Event <br /> NAVD 88) point) <br /> KMW-4 FGL 4/3/2023 23.22 5.65 17.57 12.15 <br /> KMW-6 FGL 4/3/2023 21.95 5.75 16.20 10.73 <br /> KMW-8 FGL 4/3/2023 20.37 6.30 14.07 9.06 <br /> KMW-9 FGL 4/3/2023 18.21 5.05 13.16 7.40 <br /> KMW-10 FGL 4/3/2023 11.47 3.50 7.97 3.89 <br /> KMW-11 FGL 4/3/2023 11.11 3.90 7.21 3.41 <br /> Average 6.85 11.08 6.17 <br /> Pond S6 <br /> RMW-4 FGL 3/24/2023 24.00 14.65 9.35 4.02 <br /> RMW-5 FGL 3/24/2023 23.26 12.70 10.56 6.48 <br /> Average 13.68 9.96 5.25 <br /> River Islands <br /> MWR-3 ENGEO 4/5/2023 14.66 6.39 8.27 4.21 <br /> MWR-4 ENGEO 4/5/2023 18.82 9.04 9.78 3.45 <br /> MWR-5R ENGEO 4/5/2023 18.53 9.51 9.02 1.32 <br /> MWR-9b ENGEO 4/5/2023 14.57 NA NA NA <br /> MWR-10 ENGEO 4/5/2023 15.10 9.51 5.59 2.33 <br /> MWR-11 ENGEO 4/5/2023 14.33 14.51 -0.18 6.94 <br /> MWR-12` ENGEO 4/5/2023 14.78 NA NA NA <br /> MWR-23 ENGEO 4/5/2023 19.70 5.28 14.42 9.32 <br /> MWR-25 ENGEO 4/5/2023 16.25 2.51 13.74 8.72 <br /> MWR-26 ENGEO 4/5/2023 14.75 5.00 9.75 4.50 <br /> MWR-27 ENGEO 4/5/2023 10.88 8.83 2.05 NA <br /> MWR-28 ENGEO 4/5/2023 11.94 16.52 -4.58 7.82 <br /> MWR-29 ENGEO 4/5/2023 13.29 14.57 -1.28 7.84 <br /> MWR-30 ENGEO 4/5/2023 13.22 15.12 -1.90 3.53 <br /> MWR-31 ENGEO 4/5/2023 10.51 8.25 2.26 6.35 <br /> MWR-32 ENGEO 4/5/2023 11.97 14.31 -2.34 9.88 <br /> Average 9.95 4.61 5.86 <br /> Abbreviations: <br /> ENGEO=ENGEO, Inc. <br /> FGL=FGL Environmental, Inc. <br /> MSL= mean sea level <br /> NAVD 88=North American Vertical Datum of 1988 <br /> Notes. <br /> (a) The monitoring wells are constructed to represent conditions in the shallowest water-bearing zones. In general,the <br /> wells are 20 to 30 feet deep and have perforated intervals that range from 10 to 20 feet in total length. <br /> (b) Water level measurement was not collected from MWR-9 as the well was damaged during construction. The <br /> developer is currently formulating plans for proper abandonment. <br /> (c) Water level measurement was not collected from MWR-12 as the well was dry due to nearby dewatering construction <br /> activities. <br /> City of Lathrop 7 13 July 2023 <br /> EKI 1390088.03 <br />