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0 9 <br /> v.8.7.009. EPA m.a.0.01 <br /> SEN'S SLOPE ESTIMATOR <br /> AMW- <br /> 2s <br /> 2® n = 53. <br /> a Sloe = -6.565 <br /> units per year. <br /> Mann Kendall <br /> 15 — normal approx. _ <br /> -5.318. <br /> 0 <br /> 0 <br /> Decreasing trend <br /> F 10 ® confidence le 99% <br /> ® ® (two tailed). <br /> ® Critical value = -2.575. <br /> 50- <br /> o <br /> ♦ <br /> Mar 1994 Feb 2001 Feb 2008 <br /> Constituent: Tetrachloroethylene (ug/L) Facility: Austin Road LF Data File: AUSTINOR <br /> Date: 4/11/08, 10:33 AM Client: Austin Road LF View: Batch <br /> HERST & ASSOCIATES, INC: <br />