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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-24 <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 /> o c <br /> 3 � <br /> v <br /> 3 0 <br /> o c <br /> c7 M <br /> m -5 <br /> 41 <br /> G/ Ln l0 r� 00 Ql O -i N m � Ln lD r� 00 Ol O -1 N m � Ln l0 r� 00 Ql O r-I N m Ln <br /> GJ 01 01 01 01 01 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 /> MWR-24 MWR-24 <br /> Measuring Point NGVD 29 NAVD 88 Measuring Point NGVD 29 NAVD 88 <br /> VIP 14.29 16.68 M P 14.29 16.68 <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 /> 8/31/2005 10.65 3.64 6.03 1/27/2012 11.86 2.43 4.82 <br /> 11/28/2005 12.22 2.07 4.46 4/4/2012 10.0 4.3 6.7 <br /> 2/7/2006 11.03 3.26 5.65 7/24/2012 11.3 3.0 5.4 <br /> 4/25/2006 6.5 7.8 10.20 10/9/2012 11.7 2.6 5.0 <br /> 7/19/2006 10.8 3.5 5.90 1/29/2013 11.3 3.0 5.4 <br /> 10/13/2006 10.4 3.9 6.30 4/2/2013 11.6 2.7 5.1 <br /> 1/23/2007 12.3 2.0 4.40 7/20/2013 10.9 3.4 5.8 <br /> 4/24/2007 12.3 2.0 4.40 11/18/2013 12.1 2.2 4.6 <br /> 7/24/2007 12.1 2.2 4.6 1/28/2014 11.3 3.0 5.4 <br /> 10/30/2007 12.1 2.2 4.6 4/22/2014 11.0 3.3 5.7 <br /> 1/24/2008 12.2 2.1 4.5 7/31/2014 10.9 3.4 5.8 <br /> 4/15/2008 11.9 2.4 4.8 11/4/2014 11.2 3.1 5.5 <br /> 8/21/2008 11.8 2.5 4.9 1/29/2015 10.5 3.8 6.2 <br /> 10/8/2008 12.0 2.3 4.7 10/21/2015 14.30 -0.01 2.38 <br /> 2/9/2009 12.0 2.3 4.7 10/27/2015 13.9 0.4 2.8 <br /> 4/12/2009 12.7 1.6 4.0 4/25/2016 11.1 3.2 5.6 <br /> 8/4/2009 11.5 2.8 5.2 11/4/2016 10.8 3.5 5.9 <br /> 10/1/2009 11.9 2.4 4.8 12/6/2016 9.97 4.32 6.71 <br /> 2/9/2010 11.6 2.7 5.1 5/8/2017 6.6 7.7 10.1 <br /> 4/11/2010 13.2 1.1 3.5 11/30/2017 11.70 2.59 4.98 <br /> 8/27/2010 -- -- -- 5/4/2018 10.8 3.5 5.9 <br /> 10/3/2010 11.8 2.5 4.9 11/7/2018 11.20 3.09 5.48 <br /> 1/18/2011 11.4 2.9 5.3 5/3/2019 9.78 4.51 6.90 <br /> 4/10/2011 10.0 4.3 6.7 <br /> 8/15/2011 9.9 4.4 6.8 <br /> 10/10/2011 10.4 3.9 6.3 <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 Carlson, Barbee, &Gibson, October 2005. <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 16 October 2019 per Regional Water Quality Control <br /> Board approval. <br /> EKI Environment &Water, Inc. <br /> July 2023 Page 124 of 145 EKI 1390088.03 <br />