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v.8.6.005. m.a.0.01 EPA <br /> SEN'S SLOPE ESTIMATOR <br /> AMW-14 <br /> 100- <br /> 80_ n=48. <br /> ♦ SlQpe=-2.12 <br /> units per year. <br /> 60- Mann Kendall <br /> ♦ 2 0 1 approx. _ <br /> 0 <br /> ♦ ♦ Decreasing trend <br /> 4 ♦ sigmficanf at 99% <br /> ® confide c level <br /> ® two tai lne . <br /> ® Critical va ue=-2.575. <br /> 20- <br /> 0 ®♦ <br /> Jul 1995 Jun 2001 May 2007 <br /> Hollow symbols indicate censored values. <br /> Constituent: Tetrachloroethylene (ug/L) Facility: Austin Road LF Data File: AUSTINOR <br /> Date: 7/9/07, 9:13 PM Client: Austin Road LF View:—Batch— <br /> HE S <br /> atchHERST 06CIATES, INC. <br />