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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-N2 <br /> Groundwater Elevation <br /> 00 20 <br /> 00 <br /> 0 z 15 <br /> > 10 <br /> W <br /> d � <br /> 5 <br /> a c <br /> 3 � <br /> a, <br /> 3 E 0 <br /> 0 e <br /> C7 0 <br /> ++ <br /> -5 <br /> a� Ln 1.0 r-. oo rn o c14 m v Ln �O r� oo rn o N m � Ln �.o r*' oo rn o r-1 ci m � Ln <br /> d 01 01 01 01 M O O O O O O O O O O -1 -1 -1 -1 -1 -1 -1 r-I -1 -1 N N N N N N <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-N2 <br /> Measuring Point NGVD 29 NAVD 88 <br /> M P 7.07 9.46 <br /> Groundwater Groundwater <br /> Date Sampled DTW(ft) Elevation Elevation <br /> ft,NGVD 29 ft,NAVD 88 <br /> 1/11/2005 3.96 3.11 5.50 <br /> 4/22/2005 4.42 2.65 5.04 <br /> 6/16/2005 5.86 1.21 3.60 <br /> 8/2/2005 7.19 -0.12 2.27 <br /> 11/4/2005 8.10 -1.03 1.36 <br /> 2/16/2006 5.71 1.36 3.75 <br /> 5/9/2006 4.94 2.13 4.52 <br /> 9/11/2006 6.60 0.47 2.86 <br /> 5/11/2016 6.12 0.95 3.34 <br /> 12/9/2016 10.37 -3.30 -0.91 <br /> 11/29/2017 11.02 -3.95 -1.56 <br /> 11/6/2018 10.41 -3.34 -0.95 <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 2 of 145 EKI B90088.03 <br />