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v.8.7.009. EPA m.a.0.01 <br /> SEWS SLOPE ESTIMATOR <br /> 4 <br /> n = 66. <br /> 3 Sloe = 0.111 <br /> units per year. <br /> Mann Kendall <br /> normal approx. _ <br /> z 5.151. <br /> ca 2 <br /> Increasing trend <br /> significant at 99% <br /> z confidence level <br /> two tailed). <br /> Critical value = 2.575. <br /> 1 <br /> 11 <br /> 0 ® ®® <br /> Aug 1991 Nov 1999 Feb 2008 <br /> Constituent: Nitrate as N (mg/L) Facility: Austin Road LF Data File: AUSTININ <br /> Date: 4/10/08911:41 AM Client: Austin Road LF View: Batch <br /> HERST & ASSOCIATES, INC." <br />