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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-N6 <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 0 <br /> o e <br /> C7 0 <br /> ++ <br /> -5 <br /> a) Ln 1.0 r� oo rn or-i N m v Ln �.O r� oo rn 0 -1 N m �t Ln 110 r� oo rn o m � Ln <br /> d 01 01 01 01 01 O O O O O O O O O O <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-N6 <br /> Measuring Point NGVD 29 NAVD 88 <br /> MP 15.76 18.15 <br /> Groundwater Groundwater <br /> Date Sampled DTW(ft) Elevation Elevation <br /> ft, NGVD 29 ft,NAVD 88 <br /> 1/11/2005 20.74 -4.98 -2.59 <br /> 5/4/2005 15.43 0.33 2.72 <br /> 6/16/2005 18.50 -2.74 -0.35 <br /> 8/2/2005 21.34 -5.58 -3.19 <br /> 11/4/2005 20.55 -4.79 -2.40 <br /> 2/16/2006 18.30 -2.54 -0.15 <br /> 5/9/2006 15.26 0.50 2.89 <br /> 9/11/2006 9.18 6.58 8.97 <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 6 of 145 EKI B90088.03 <br />