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Sanitas' v.9.3.25 For the statistical analyses of ground water by Geologic Associates only. EPA <br />Sen's Slope and 98% Confidence Band <br />7 <br />5.6 <br />4.2 <br />J <br />rn <br />2.8 <br />1.4 <br />0 1. <br />8/19/04 <br />n=32 <br />Slope = -0.1652 <br />units per year. <br />Mann -Kendall <br />statistic = -187 <br />critical = -145 <br />Decreasing trend <br />significant at 98% <br />confidence level <br />(a = 0.01 per <br />tail). <br />6/7/06 3/25/08 1/11/10 10/30/11 8/17/13 <br />Constituent: Chromium [Hexavalent], Dis. Analysis Run 9/4/2013 1:13 PM <br />Facility: Forward Landfill Client: RSI Data File: Aust2Q13GCSan8 <br />0 to <br />• <br />•: <br />°•. <br />• <br />• <br />• • <br />..... <br />......... <br />............................ <br />• <br />•........... <br />• <br />® • <br />0 1. <br />8/19/04 <br />n=32 <br />Slope = -0.1652 <br />units per year. <br />Mann -Kendall <br />statistic = -187 <br />critical = -145 <br />Decreasing trend <br />significant at 98% <br />confidence level <br />(a = 0.01 per <br />tail). <br />6/7/06 3/25/08 1/11/10 10/30/11 8/17/13 <br />Constituent: Chromium [Hexavalent], Dis. Analysis Run 9/4/2013 1:13 PM <br />Facility: Forward Landfill Client: RSI Data File: Aust2Q13GCSan8 <br />0 to <br />