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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-7C 10/31/2001 24.94 60.92 -35.98 <br />2/20/2002 25.13 54.30 -29.36 <br />3/5/2002 54.00 -29.06 <br />9/17/2002 62.16 -37.22 <br />1/14/2003 58.62 -33.68 <br />5/27/2003 58.43 -33.49 <br />9/29/2003 62.70 -37.76 <br />3/23/2004 57.00 -32.06 <br />6/8/2004 60.92 -35.98 <br />9/16/2004 66.30 -41.36 <br />12/14/2004 64.26 -39.32 <br />3/12/2005 54.62 -29.68 <br />6/5/2005 54.96 -30.02 <br />11/10/2005 54.84 -29.90 <br />3/16/2006 45.64 -20.70 <br />6/6/2006 42.40 -17.46 <br />9/22/2006 50.61 -25.67 <br />12/12/2006 47.04 -22.10 <br />3/20/2007 48.64 -23.70 <br />6/22/2007 50.72 -25.78 <br />9/27/2007 54.66 -29.72 <br />2/12/2008 50.67 -25.73 <br />7/14/2008 56.80 -31.67 <br />10/16/2008 60.87 -35.74 <br />1/15/2009 61.91 -36.78 <br />9/18/2009 65.56 -40.43 <br />3/5/2010 56.94 -31.81 <br />9/9/2010 56.30 -31.17 <br />3/20/2011 44.85 -19.72 <br />9/1/2011 48.16 -23.03 <br />3/1/2012 49.05 -23.92 <br />9/16/2013 55.5 -30.22 <br />4/24/2014 54.00 -28.87 <br />9/15/2016 66.91 -41.78 <br />3/7/2017 35.05 -9.92 <br />2/5/2018 38.62 -13.68 <br />9/19/2018 40.15 -15.02 <br />3/26/2020 - - <br />9/15/2020 - - <br />3/23 & 3/24/2021 - - <br />9/13 & 9/14/2021 45.50 -20.37 <br />APEX ENVIROTECH, INC. <br />SECOND SEMI-ANNUAL 2021 <br />Page 14 of 23 WFF02.001