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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-16 <br /> Groundwater Elevation Well <br /> � <br /> 20 abandoned <br /> 00 <br /> 0 <br /> o z 15 <br /> > 10 <br /> W <br /> d � <br /> 5 <br /> a c <br /> 3 � <br /> a, <br /> 3 0 <br /> o e <br /> C7 0 <br /> -5 <br /> 47 Lfl lD r� 00 Ql O c-I N M lf1 1.0 r� 00 Ql O r-I N M L.P) lD I" 00 Ql O r-I N M Lf1 <br /> co co co co co co co ro ca ra ra co ca ca co co co co co co co co co co co ro ca co ro ra co <br /> Date <br /> MWM-16 MWM-16 <br /> Measuring Point NGVD 29 NAVD 88 Measuring Point NGVD 29 NAVD 88 <br /> IMP 9.41 11.8 MP 9.41 11.8 <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 8.65 0.76 3.15 10/26/2011 6.88 2.53 4.92 <br /> 6/28/2005 8.31 1.10 3.49 1/24/2012 7.45 1.96 4.35 <br /> 10/12/2005 8.95 0.46 2.85 5/1/2012 7.19 2.22 4.61 <br /> 1/31/2006 7.47 1.94 4.33 7/26/2012 7.65 1.76 4.15 <br /> 4/25/2006 6.20 3.21 5.60 10/24/2012 7.21 2.20 4.59 <br /> 7/19/2006 6.85 2.56 4.95 1/30/2013 6.99 2.42 4.81 <br /> 10/13/2006 7.85 1.56 3.95 4/29/2013 7.16 2.25 4.64 <br /> 1/23/2007 8.20 1.21 3.60 8/1/2013 7.71 1.70 4.09 <br /> 4/24/2007 7.81 1.60 3.99 11/21/2013 7.81 1.60 3.99 <br /> 7/24/2007 7.64 1.77 4.16 2/4/2014 7.95 1.46 3.85 <br /> 10/30/2007 7.70 1.71 4.10 4/23/2014 8.00 1.41 3.80 <br /> 1/24/2008 6.94 2.47 4.86 8/4/2014 7.86 1.55 3.94 <br /> 4/15/2008 7.73 1.68 4.07 10/29/2014 8.05 1.36 3.75 <br /> 8/19/2008 7.93 1.48 3.87 1/28/2015 7.18 2.23 4.62 <br /> 11/20/2008 7.63 1.78 4.17 10/13/2015 8.69 0.72 3.11 <br /> 2/11/2009 7.75 1.66 4.05 <br /> 4/14/2009 7.60 1.81 4.20 <br /> 7/30/2009 7.49 1.92 4.31 <br /> 10/21/2009 7.66 1.75 4.14 <br /> 1/27/2010 6.93 2.48 4.87 <br /> 5/6/2010 7.12 2.29 4.68 <br /> 8/25/2010 7.70 1.71 4.10 <br /> 10/21/2010 7.55 1.86 4.25 <br /> 1/27/2011 6.70 2.71 5.10 <br /> 4/25/2011 6.25 3.16 5.55 <br /> 8/19/2011 6.74 2.67 5.06 <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.htmi) <br /> (c)Well destruction was coordinated by HydroFocus, Inc.Well was abandoned on 18 October 2016 per Regional Water Quality <br /> Control Board approval. <br /> EKI Environment &Water, Inc. <br /> July 2023 Page 43 of 145 EKI B90088.03 <br />