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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 - MWM-14 <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 0 <br /> o c <br /> c7 M <br /> m -5 <br /> 41 <br /> a� Ln �0 r` oo rn O -i N ro � Ln � r` oo rn O r-i N m � Ln �0 r` oo am O -1 N cn 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 co co co co co co co co co co co <br /> Date <br /> MWM-14 MWM-14 <br /> Measuring Point NGVD 29 NAVD 88 Measuring Point NGVD 29 NAVD 88 <br /> MID 8.54 10.93 MP 8.54 10.93 <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 /> 5/24/2005 5.93 2.61 5.00 10/28/2011 9.15 -0.61 1.78 <br /> 6/28/2005 6.24 2.30 4.69 1/24/2012 7.25 1.29 3.68 <br /> 10/12/2005 7.73 0.81 3.20 5/1/2012 6.70 1.84 4.23 <br /> 1/31/2006 6.48 2.06 4.45 7/27/2012 7.29 1.25 3.64 <br /> 4/25/2006 4.38 4.16 6.55 10/24/2012 6.51 2.03 4.42 <br /> 7/19/2006 5.21 3.33 5.72 1/31/2013 7.18 1.36 3.75 <br /> 10/13/2006 6.67 1.87 4.26 5/1/2013 6.33 2.21 4.60 <br /> 1/23/2007 7.63 0.91 3.30 8/1/2013 7.56 0.98 3.37 <br /> 4/24/2007 7.49 1.05 3.44 11/21/2013 7.33 1.21 3.60 <br /> 7/24/2007 6.88 1.66 4.05 2/4/2014 7.72 0.82 3.21 <br /> 10/30/2007 6.98 1.56 3.95 4/23/2014 7.79 0.75 3.14 <br /> 1/24/2008 6.89 1.65 4.04 8/5/2014 7.38 1.16 3.55 <br /> 4/15/2008 7.60 0.94 3.33 10/30/2014 7.40 1.14 3.53 <br /> 8/19/2008 7.51 1.03 3.42 1/28/2015 7.40 1.14 3.53 <br /> 11/25/2008 7.00 1.54 3.93 10/13/2015 7.41 1.13 3.52 <br /> 2/17/2009 7.05 1.49 3.88 <br /> 4/14/2009 7.50 1.04 3.43 <br /> 7/30/2009 6.10 2.44 4.83 <br /> 10/21/2009 7.30 1.24 3.63 <br /> 1/27/2010 6.71 1.83 4.22 <br /> 5/6/2010 6.72 1.82 4.21 <br /> 8/25/2010 7.15 1.39 3.78 <br /> 10/25/2010 6.25 2.29 4.68 <br /> 1/27/2011 5.55 2.99 5.38 <br /> 4/26/2011 4.19 4.35 6.74 <br /> 8/19/2011 5.86 2.68 5.07 <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,July 2005. <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 19 October 2016 per Regional Water Quality <br /> Control Board approval. <br /> EKI Environment&Water, Inc. <br /> July 2023 Page 40 of 145 EKI B90088.03 <br />