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TABLE 4 <br />HISTORICAL GROUNDWATER ELEVATION DATA <br />Waterloo Food Fuel <br />3032 East Waterloo Road <br />Stockton, California <br />Monitoring <br />Well <br />Date Reference <br />Elevation* <br />(feet) <br />Depth to <br />Groundwater <br />(feet) <br />Groundwater <br />Elevation <br />(feet) <br />MW-6A*** 10/31/2001 25 36 60.96 -35.60 <br />2/20/2002 25 40 54.42 -29.06 <br />3/5/2002 54.37 -29.01 <br />9/17/2002 62.12 -36.76 <br />1/14/2003 59.14 -33.78 <br />5/27/2003 58.38 -33.02 <br />9/29/2003 62.91 -37.55 <br />3/23/2004 57.28 -31.92 <br />6/8/2004 60.79 -35.43 <br />9/16/2004 63.70 -38.34 <br />12/14/2004 63.92 -38.56 <br />3/12/2005 55.26 -29.90 <br />6/5/2005 54.98 -29.62 <br />11/10/2005 56.54 -31.18 <br />3/16/2006 46.46 -21.10 <br />6/6/2006 42.50 -17.14 <br />9/22/2006 50.65 -25.29 <br />12/12/2006 47.38 -22.02 <br />3/20/2007 48.03 -22.67 <br />6/22/2007 50.70 -25.34 <br />9/27/2007 54.70 -29.34 <br />2/12/2008 50.87 -25.51 <br />7/14/2008 56.74 -31.34 <br />10/16/2008 60.84 -35.44 <br />1/15/2009 61.90 -36.20 <br />9/18/2009 63.55 -38.15 <br />3/5/2010 57.91 -32.51 <br />9/9/2010 56.42 -31.02 <br />3/20/2011 46.30 -20.90 <br />9/1/2011 48.00 -22.60 <br />3/1/2012 49.18 -23.78 <br />12/17/2012 50.00 -24.60 <br />9/16/2013 55.50 -30.10 <br />4/24/2014 53.97 -28.57 <br />3/9/2015 59.85 -34.45 <br />9/15/2016 63.43 -38.03 <br />3/7/2017 37.55 -12.15 <br />2/5/2018 39.07 -13.71 <br />9/19/2018 40.09 -14.69 <br />3/26/2020 - - <br />9/15/2020 38.81 -13.41 <br />3/23 & 3/24/2021 38.50 -13.10 <br />9/13 & 9/14/2021 - - <br />APEX ENVIROTECH, INC. <br />SECOND SEMI-ANNUAL 2021 <br />Page 6 of 23 WFF02.001