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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-1 <br /> Groundwater Elevation Well <br /> abandoned <br /> 00 20 <br /> 00 <br /> o z 15 <br /> ai 10 <br /> W � <br /> 41 Aft <br /> c <br /> 3 � <br /> v <br /> 3 0 <br /> o c <br /> c7 M <br /> m -5 <br /> 41 <br /> G/ Ln lD r� W M O I N M � uO lD I, W M O r I N M � u1 lO I, W M O I N M � <br /> GJ 01 01 01 T T 0 0 0 0 0 0 0 0 0 0 <br /> co co co ro co co co co ra co co co ro co co co ca co co co ca co co co ro co co co co ra <br /> Date <br /> KMW-1 KMW-1 <br /> Measuring Point NGVD 29 NAVD 88 Measuring Point NGVD 29 NAVD 88 <br /> MID 11.84 14.23 MP 11.84 14.23 <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 /> 1/30/2001 11.30 0.54 2.93 10/26/2009 10.12 1.72 4.11 <br /> 10/11/2002 13.00 -1.16 1.23 2/5/2010 8.58 3.26 5.65 <br /> 1/24/2003 16.25 -4.41 -2.02 5/3/2010 8.48 3.36 5.75 <br /> 4/16/2003 11.67 0.17 2.56 8/3/2010 9.18 2.66 5.05 <br /> 9/24/2003 13.37 -1.53 0.86 10/14/2010 9.87 1.97 4.36 <br /> 3/3/2004 11.63 0.21 2.60 3/3/2011 6.80 5.04 7.43 <br /> 4/19/2004 12.28 -0.44 1.95 4/20/2011 7.82 4.02 6.41 <br /> 12/1/2004 13.86 -2.02 0.37 8/22/2011 9.13 2.71 5.10 <br /> 4/21/2005 12.34 -0.50 1.89 10/31/2011 9.13 2.71 5.10 <br /> 8/18/2005 14.05 -2.21 0.18 1/23/2012 8.50 3.34 5.73 <br /> 10/12/2005 13.36 -1.52 0.87 4/26/2012 8.65 3.19 5.58 <br /> 1/26/2006 12.71 -0.87 1.52 8/1/2012 10.53 1.31 3.70 <br /> 5/1/2006 10.15 1.69 4.08 10/29/2012 10.69 1.15 3.54 <br /> 8/15/2006 11.47 0.37 2.76 2/4/2013 9.50 2.34 4.73 <br /> 10/23/2006 11.25 0.59 2.98 5/6/2013 10.01 1.83 4.22 <br /> 1/30/2007 10.32 1.52 3.91 8/5/2013 10.98 0.86 3.25 <br /> 4/30/2007 10.78 1.06 3.45 11/19/2013 10.98 0.86 3.25 <br /> 8/2/2007 11.78 0.06 2.45 2/6/2014 11.00 0.84 3.23 <br /> 12/4/2007 1.08 10.76 13.15 4/28/2014 10.68 1.16 3.55 <br /> 2/20/2008 9.57 2.27 4.66 8/6/2014 11.55 0.29 2.68 <br /> 4/17/2008 10.05 1.79 4.18 11/4/2014 11.47 0.37 2.76 <br /> 7/15/2008 10.45 1.39 3.78 2/2/2015 10.23 1.61 4.00 <br /> 10/20/2008 10.54 1.30 3.69 4/27/2015 10.67 1.17 3.56 <br /> 1/12/2009 10.12 1.72 4.11 7/27/2015 11.62 0.22 2.61 <br /> 4/20/2009 9.64 2.20 4.59 8/31/2015 11.55 0.29 2.68 <br /> 7/27/2009 9.85 1.99 4.38 10/29/2015 11.55 0.29 2.68 <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.html) <br /> (c)Well destruction was coordinated by HydroFocus, Inc.Well was abandoned on 11 December 2015 per Regional Water Quality <br /> Control Board approval. <br /> EKI Environment &Water, Inc. <br /> July 2023 Page 71 of 145 EKI B90088.03 <br />