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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-N1 <br /> Groundwater Elevation <br /> 000 20 <br /> 0 <br /> o z 15 <br /> ai iv 10 <br /> W <br /> GJ � <br /> 5 <br /> 3 <br /> v <br /> 0 W 0 <br /> c7o c <br /> u0 <br /> m -5 <br /> v � � r� oo rn 0 -1 N m Ln I'D r, oo rn or-i N m � Ln � r� oo rn 0 -1 N m � Ln <br /> GJ 01 01 01 T T 0 0 0 0 0 0 0 0 0 0 <br /> co co ra co co co co co co co ro co co ca co co ra co co ra co co co co co ca co ro ca co ca <br /> Date <br /> MW-NI <br /> Measuring Point NGVD 29 NAVD 88 <br /> MP 8.68 11.07 <br /> Groundwater Groundwater <br /> Date Sampled DTW(ft) Elevation Elevation <br /> ft,NGVD 29 ft,NAVD 88 <br /> 1/11/2005 6.17 2.51 4.90 <br /> 4/22/2005 6.54 2.14 4.53 <br /> 6/16/2005 7.28 1.40 3.79 <br /> 8/2/2005 8.00 0.68 3.07 <br /> 11/4/2005 7.99 0.69 3.08 <br /> 2/16/2006 6.87 1.81 4.20 <br /> 5/9/2006 6.42 2.26 4.65 <br /> 9/11/2006 12.40 -3.72 -1.33 <br /> 5/11/2016 7.65 1.03 3.42 <br /> 12/9/2016 8.67 0.01 2.40 <br /> 11/29/2017 9.53 -0.85 1.54 <br /> 11/6/2018 8.50 0.18 2.57 <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.html) <br /> EKI Environment &Water, Inc. <br /> July 2023 Page 1 of 145 EKI B90088.03 <br />