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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 - KMW-3 <br /> Groundwater Elevation Well <br /> abandoned <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 o 0 <br /> e <br /> C7 0 <br /> ++ <br /> -5 <br /> a� uO � r*1 oo rn or-i N m � Ln k.0 r� oo rn or-4 N m � Ln k.0 r� oo rn or-i N m � <br /> d 01 01 01 T 01 O O O O O O O O O O N N cV N <br /> co co ca co co co ca co co co ro co co co co ra co co co ro co co co ca ca co co ca co co <br /> Date <br /> KMW-3 KMW-3 <br /> Measuring Point NGVD 29 NAVD 88 Measuring Point NGVD 29 NAVD 88 <br /> MP 13.75 16.14 MP 13.75 16.14 <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 /> 1/29/2001 12.22 1.53 3.92 10/26/2009 11.47 2.28 4.67 <br /> 10/11/2002 14.00 -0.25 2.14 2/4/2010 10.33 3.42 5.81 <br /> 1/24/2003 14.00 -0.25 2.14 5/3/2010 10.03 3.72 6.11 <br /> 4/16/2003 13.25 0.50 2.89 8/3/2010 10.32 3.43 5.82 <br /> 9/24/2003 14.97 -1.22 1.17 10/14/2010 11.49 2.26 4.65 <br /> 2/19/2004 13.30 0.45 2.84 3/3/2011 9.38 4.37 6.76 <br /> 4/19/2004 13.47 0.28 2.67 4/20/2011 9.38 4.37 6.76 <br /> 7/21/2004 15.03 -1.28 1.11 8/22/2011 10.28 3.47 5.86 <br /> 4/21/2005 13.6 0.15 2.54 10/31/2011 10.61 3.14 5.53 <br /> 8/18/2005 15.65 -1.90 0.49 1/23/2012 10.17 3.58 5.97 <br /> 10/12/2005 14.93 -1.18 1.21 4/26/2012 10.08 3.67 6.06 <br /> 1/30/2006 12.90 0.85 3.24 8/1/2012 11.93 1.82 4.21 <br /> 5/1/2006 11.51 2.24 4.63 10/29/2012 12.48 1.27 3.66 <br /> 8/15/2006 12.82 0.93 3.32 2/4/2013 9.91 3.84 6.23 <br /> 10/23/2006 12.65 1.10 3.49 5/6/2013 10.53 3.22 5.61 <br /> 1/30/2007 11.36 2.39 4.78 8/6/2013 11.94 1.81 4.20 <br /> 5/29/2007 10.86 2.89 5.28 11/19/2013 12.61 1.14 3.53 <br /> 8/2/2007 12.31 1.44 3.83 2/6/2014 12.47 1.28 3.67 <br /> 12/3/2007 12.27 1.48 3.87 4/28/2014 9.95 3.80 6.19 <br /> 2/18/2008 10.40 3.35 5.74 8/6/2014 12.81 0.94 3.33 <br /> 4/16/2008 11.04 2.71 5.10 11/4/2014 13.00 0.75 3.14 <br /> 7/15/2008 11.85 1.90 4.29 2/2/2015 11.35 2.40 4.79 <br /> 10/20/2008 12.04 1.71 4.10 4/27/2015 11.85 1.90 4.29 <br /> 1/12/2009 11.80 1.95 4.34 7/27/2015 12.65 1.10 3.49 <br /> 4/20/2009 11.42 2.33 4.72 8/31/2015 13.20 0.55 2.94 <br /> 7/27/2009 11.61 2.14 4.53 10/29/2015 13.40 0.35 2.74 <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 by MacKay&Somps, February 2015. <br /> (b)Surveyed 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 /> (c)Well destruction was coordinated by HydroFocus, Inc.Well was abandoned on 9 December 2015 per Regional Water Quality <br /> Control Board approval. <br /> EKI Environment&Water, Inc. <br /> July 2023 Page 74 of 145 EKI B90088.03 <br />