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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 - MWR-2 <br /> Groundwater Elevation Well <br /> � <br /> 20 abandoned <br /> 00 <br /> 0 <br /> o z 15 <br /> �a a, <br /> ai ai 10 <br /> W � <br /> S <br /> o c <br /> 3 � <br /> v <br /> 3 E 0 <br /> o c <br /> c7 � <br /> +� <br /> -5 <br /> a� Ln �O r` oo rn o -1 N m � Ln � r` oo rn o r-i N m � u'1 �O r` oo rn o N m � Ln <br /> GJ 01 01 01 01 T 0 0 0 0 0 0 0 0 0 0 <br /> co co co co co co co co co co co co co ro ca ca ra ca ca ca ca co co co co co co co co co co <br /> Date <br /> MWR-2 MWR-2 <br /> Measuring Point NGVD 29 NAVD 88 Measuring Point NGVD 29 NAVD 88 <br /> MP 15.74 18.13 MP 15.74 18.13 <br /> Groundwater Groundwater Groundwater Groundwater <br /> Date Sampled DTW(ft) Elevation Elevation Date Sampled DTW(ft) Elevation Elevation <br /> ft,NGVD 29 ft,NAVD 88 ft,NGVD 29 ft,NAVD 88 <br /> 1/26/1999 12.62 3.12 5.51 1/18/2011 11.5 4.2 6.6 <br /> 3/2/1999 10.54 5.20 7.59 4/10/2011 10.0 5.7 8.1 <br /> 4/12/1999 11.49 4.25 6.64 8/15/2011 12.0 3.7 6.1 <br /> 3/15/2004 12.37 3.37 5.76 10/10/2011 12.1 3.6 6.0 <br /> 11/15/2004 12.75 2.99 5.38 1/26/2012 13.4 2.3 4.7 <br /> 8/31/2005 11.56 4.18 6.57 4/4/2012 13.1 2.6 5.0 <br /> 11/30/2005 13.33 2.41 4.80 7/24/2012 -- -- -- <br /> 2/10/2006 11.1 4.6 7.01 10/9/2012 12.2 3.5 5.9 <br /> 4/25/2006 8.9 6.8 9.2 1/29/2013 11.3 4.4 6.8 <br /> 7/19/2006 11.6 4.1 6.5 4/2/2013 13.2 2.6 5.0 <br /> 10/13/2006 14.0 1.7 4.1 7/20/2013 -- -- -- <br /> 1/23/2007 13.8 1.9 4.3 11/18/2013 13.3 2.4 4.79 <br /> 4/24/2007 13.8 1.9 4.3 1/28/2014 13.9 1.8 4.2 <br /> 7/24/2007 14.7 1.0 3.4 4/22/2014 13.4 2.3 4.7 <br /> 10/30/2007 13.9 1.8 4.2 7/31/2014 13.8 1.9 4.3 <br /> 1/24/2008 13.4 2.3 4.7 11/4/2014 13.8 1.9 4.3 <br /> 4/15/2008 13.7 2.0 4.4 <br /> 8/21/2008 14.2 1.5 3.9 <br /> 10/8/2008 14.1 1.6 4.0 <br /> 2/9/2009 13.9 1.8 4.2 <br /> 4/12/2009 14.1 1.6 4.0 <br /> 8/4/2009 14.9 0.8 3.2 <br /> 10/1/2009 14.2 1.5 3.9 <br /> 2/9/2010 13.9 1.8 4.2 <br /> 4/11/2010 14.0 1.7 4.1 <br /> 8/27/2010 13.5 2.2 4.6 <br /> 10/3/2010 13.6 2.1 4.5 <br /> Abbreviations: <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 surveyed in April/May 2004. <br /> (b)Surveyed elevations referenced to NAVD 88 and converted to NGVD 29 by subtracting 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 /> (c)Well destruction was coordinated by ENGEO, Inc.Well was abandoned on 25 November 2014. <br /> EKI Environment &Water, Inc. <br /> July 2023 Page 104 of 145 EKI B90088.03 <br />