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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-7B 10/31/2001 24.94 60.30 -35.36 <br />3/5/2002 25.13 53.90 -28.96 <br />9/17/2002 61.73 -36.79 <br />1/14/2003 58.52 -33.58 <br />5/27/2003 58.00 -33.06 <br />9/29/2003 62.35 -37.41 <br />3/23/2004 56.80 -31.86 <br />6/8/2004 60.57 -35.63 <br />9/16/2004 65.95 -41.01 <br />12/14/2004 64.18 -39.24 <br />3/12/2005 54.34 -29.40 <br />6/5/2005 54.03 -29.09 <br />11/10/2005 54.71 -29.77 <br />3/16/2006 45.14 -20.20 <br />6/6/2006 41.75 -16.81 <br />9/22/2006 50.10 -25.16 <br />12/12/2006 46.64 -21.70 <br />3/20/2007 48.38 -23.44 <br />6/22/2007 50.71 -25.77 <br />9/27/2007 54.39 -29.45 <br />2/12/2008 50.40 -25.46 <br />7/14/2008 56.51 -31.38 <br />10/16/2008 60.64 -35.51 <br />1/15/2009 61.70 -36.57 <br />9/18/2009 65.32 -40.19 <br />3/5/2010 56.85 -31.72 <br />9/9/2010 56.00 -30.87 <br />3/20/2011 44.62 -19.68 <br />9/1/2011 47.62 -22.49 <br />3/1/2012 48.94 -23.81 <br />12/17/2012 49.55 -24.42 <br />9/16/2013 55.15 -30.02 <br />4/24/2014 53.82 -28.69 <br />3/9/2015 58.90 -33.77 <br />8/18/2016 64.56 -39.43 <br />9/15/2016 66.73 -41.60 <br />3/7/2017 34.70 -9.57 <br />2/5/2018 38.32 -13.38 <br />9/19/2018 39.79 -14.66 <br />3/26/2020 -- -- <br />9/15/2020 - --- <br />3/23 & 3/24/2021 38.35 -13.22 <br />9/13 & 9/14/2021 58.24 -33.11 <br />APEX ENVIROTECH, INC. <br />SECOND SEMI-ANNUAL 2021 <br />Page 13 of 23 WFF02.001