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v.8.7.009. CAS#7440-23-5 EPA m.a.0.01 <br /> SEWS SLOPE ESTIMATOR <br /> AMW- 18 <br /> 20 <br /> n = 15. <br /> 15 Slope = -8.526 <br /> units per year. <br /> ♦ Mann Kendall <br /> statistic = -71. <br /> 0 <br /> Decreasing trend <br /> 10 significant at 99% <br /> confidence level <br /> 0, two tailed). <br /> ♦ <br /> critical value = -53. <br /> ♦ 77 <br /> 5 <br /> 01 1 <br /> Mar 2004 Feb 2006 Feb 2008 <br /> Constituent: Sodium Dissolved (mg/L) Facility: Austin Road LF Data File: AUSTININ <br /> Date: 4/10/08, 1:53 PM Client: Aus ' oad LF View: Batch <br /> HERST & ASSOCIATES, INC.' <br />