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Sanitas'"v.9.3.24 For the statistical analyses of ground water by Geologic Associates only. EPA <br /> Sen's Slope Estimator <br /> A -13 <br /> 20 <br /> n = 20 <br /> 16 <br /> Slope = 1.18 <br /> units per year. <br /> • Mann-Kendall <br /> 12 statistic = 93 <br /> critical = 73 <br /> —' Increasing trend <br /> �' • ® significant at 98% <br /> • , confidence level <br /> 8 • (a = 0.01 per <br /> tail). <br /> • • <br /> • <br /> 4 <br /> • <br /> 0 <br /> 5/6/08 4/25/09 4/14/10 4/4/11 3/23/12 3/13/13 <br /> Constituent: Tetrachloroethylene Analysis Run 4/19/2013 3:27 PM <br /> Facility: Forward Landfill Client: RSI Data File: AustVOCs <br />