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Appendix B- Historical Water Levels City of Lathrop <br /> Consolidated Treatment Facility <br /> Monitoring and Reporting Program R5-2016-0028-03 Rev 3 <br /> City of Lathrop - North of CLSP MW-N5 <br /> Groundwater Elevation <br /> 00 20 <br /> 00 <br /> o z 15 <br /> > 10 <br /> W <br /> d � <br /> 5 <br /> a c <br /> 3 � <br /> a, <br /> 3 E 0 liar <br /> o e <br /> c7 � <br /> m -5 <br /> ++ <br /> W Ln �.O r, oo rn or-1 N m v Ln �.o r, oo rn or-1 N m :t Ln �O r, oo rn or-1 N mIt Ln <br /> ca co co co co ca ca ca ca co co co co ca ca ca ca co co co co co co co co co co co co co co <br /> Date <br /> MW-N5 <br /> Measuring Point NGVD 29 NAVD 88 <br /> MP 13.18 15.57 <br /> Groundwater Groundwater <br /> Date Sampled DTW(ft) Elevation Elevation <br /> ft, NGVD 29 ft,NAVD 88 <br /> 1/11/2005 15.30 -2.12 0.27 <br /> 5/4/2005 10.96 2.22 4.61 <br /> 6/16/2005 11.31 1.87 4.26 <br /> 8/2/2005 13.87 -0.69 1.70 <br /> 11/4/2005 13.90 -0.72 1.67 <br /> 2/16/2006 13.62 -0.44 1.95 <br /> 5/9/2006 11.66 1.52 3.91 <br /> 9/11/2006 11.41 1.77 4.16 <br /> Abbreviations: <br /> CLSP=Central Lathrop Specific Plan <br /> DTW=depth to water <br /> ft=feet <br /> MP=measuring point <br /> NAVD 88= North American Vertical Datum of 1988 <br /> NGVD 29=National Geodetic Vertical Datum of 1929 <br /> Notes: <br /> (a) MP elevation reported by ENGEO, Inc.,January 2005. <br /> (b) Reported elevations referenced to NGVD 29 and converted to NAVD 88 by adding 2.39 ft. Datum conversion factor determined <br /> from National Geodetic Survey Vertcon website and is an average for the area. (www.ngs.noaa.gov/TOOLS/Vertcon/vertcon.htmi) <br /> EKI Environment &Water, Inc. <br /> July 2023 Page 5 of 145 EKI B90088.03 <br />