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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-4 2/2/2000 25.50 48.56 -23.06 <br />9/1/2000 25.55 50.33 -24.83 <br />1/5/2001 50.43 -24.93 <br />4/26/2001 49.56 -24.06 <br />8/10/2001 56.25 -30.75 <br />11/1/2001 61.03 -35.53 <br />2/20/2002 54.31 -28.81 <br />3/5/2002 54.37 -28.87 <br />9/17/2002 61.95 -36.45 <br />1/14/2003 59.78 -34.28 <br />5/27/2003 58.22 -32.72 <br />9/29/2003 62.73 -37.23 <br />3/23/2004 57.17 -31.67 <br />6/8/2004 60.35 -34.85 <br />9/16/2004 65.70 -40.20 <br />12/14/2004 65.01 -39.51 <br />3/12/2005 55.14 -29.64 <br />6/5/2005 55.02 -29.52 <br />11/10/2005 58.51 -33.01 <br />3/16/2006 46.39 -20.89 <br />6/6/2006 42.83 -17.33 <br />12/12/2006 47.54 -22.04 <br />3/20/2007 48.69 -23.19 <br />6/22/2007 51.17 -25.67 <br />9/27/2007 54.85 -29.35 <br />2/12/2008 51.03 -25.53 <br />7/14/2008 56.89 -31.34 <br />10/16/2008 60.97 -35.42 <br />1/15/2009 62.46 -36.91 <br />9/18/2009 65.37 -39.82 <br />3/5/2010 59.11 -33.56 <br />9/9/2010 57.33 -31.78 <br />3/20/2011 46.39 -20.84 <br />9/1/2011 48.00 -22.45 <br />3/1/2012 49.32 -23.77 <br />12/17/2012 49.90 -24.35 <br />9/16/2013 53.72 -28.17 <br />4/24/2014 54.33 -28.78 <br />3/9/2015 59.85 -34.30 <br />8/18/2016 65.66 -40.11 <br />3/7/2017 37.40 -11.85 <br />2/5/2018 39.12 -13.62 <br />9/19/2018 40.01 -14.46 <br />3/26/2020 34.63 -9.08 <br />9/15/2020 38.81 -13.26 <br />3/23 & 3/24/2021 38.63 -13.08 <br />9/13 & 9/14/2021 45.42 -19.87 <br />APEX ENVIROTECH, INC. <br />SECOND SEMI-ANNUAL 2021 <br />Page 4 of 23 <br />WFF02.001