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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-5A 10/31/2001 24.60 59.60 -35.00 <br />2/20/2002 24.65 53.63 -29.03 <br />3/5/2002 53.51 -28.91 <br />9/17/2002 61.42 -36.82 <br />1/14/2003 58,36 -33.76 <br />5/27/2003 57.47 -32.87 <br />9/29/2003 62.14 -37.54 <br />3/23/2004 56.60 -32.00 <br />6/8/2004 60.03 -35.43 <br />9/16/2004 62.90 -38.30 <br />12/14/2004 64.09 -39.49 <br />3/12/2005 54.67 -30.07 <br />6/5/2005 54.29 -29.69 <br />11/10/2005 55.96 -31.36 <br />3/16/2006 45.88 -21.28 <br />6/6/2006 41.94 -17.34 <br />9/22/2006 50.06 -25.46 <br />12/12/2006 46.59 -21.99 <br />3/20/2007 48.11 -23.51 <br />6/22/2007 49.95 -25.35 <br />9/27/2007 54.00 -29.40 <br />2/12/2008 50.10 -25.50 <br />7/14/2008 56.00 -31.35 <br />10/16/2008 60.10 -35.45 <br />1/15/2009 61.11 -36.46 <br />9/18/2009 62.90 -38.25 <br />3/5/2010 57.22 -32.57 <br />9/9/2010 55.71 -31.06 <br />3/20/2011 45.86 -21.21 <br />9/1/2011 47.30 -22.65 <br />3/1/2012 48.35 -23.70 <br />12/17/2012 48.95 -24.30 <br />9/16/2013 54.65 -30.00 <br />4/24/2014 53.15 -28.50 <br />3/9/2015 59.10 -34.45 <br />9/15/2016 62.75 -38.10 <br />317/2017 37.48 -12.83 <br />2/5/2018 38.43 -13.83 <br />9/19/2018 39.30 -14.65 <br />3/26/2020 - - <br />9/15/2020 37.90 -13.25 <br />3/23 & 3/24/2021 37.73 -13.08 <br />9/13 & 9/14/2021 44.53 -19.88 <br />APEX ENVIROTECH, INC. <br />SECOND SEMI-ANNUAL 2021 <br />Page 5 of 23 WFF02.001