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v.8.7.009. EPA m.a.0.01 <br /> SEN'S SLOPE ESTIMATOR <br /> AMW- 10 <br /> 15- <br /> n= 59. <br /> Slope = -0.264 <br /> units per year. <br /> 1 • <br /> Mann Kendall <br /> ® ♦ normal approx. _ <br /> ® ♦ ® -3.944. <br /> Decreasing trend <br /> ® ® ® ♦•® • significantat 99% <br /> z ® ® ♦ ® ♦® ♦j♦ confidence level <br /> ♦ ♦ (two tailed). <br /> Critical value = -2.575. <br /> 01 <br /> Mar 1994 Aug 2001 Feb 2009 <br /> Constituent: Nitrate as N (mg/L) Facility: Austin Road LF Data File: AUSTININ <br /> Date: 3/10/09, 2:59 PM Client: Austin Road LF View: Batch <br /> ERST & A IATES, INC <br />