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v.8.6.005. ma. 0.01 EPA <br />NWW <br />20( <br />15( <br />G <br />E- 10( <br />5( <br />SENS SLOPE • •, <br />n=46. <br />Slope = -5.796 <br />units per year. <br />Mann Kendall <br />normal approx. _ <br />-3.581. <br />Decreasin trend <br />sigmficanirat 99% <br />confide, c level <br />two tai�e�j. <br />Critical vallue = -2.575. <br />Mar 1994 Apr 2000 May 2006 <br />Constituent: Tetrachloroethylene (ug/L) Facility. Austin Road LF Data File: AUSTINOR <br />Date: 7/14/06,11:51 AM Client: Austin Road LF View: Batch <br />• ® HERST &OCIATES, INC. <br />1 <br />n=46. <br />Slope = -5.796 <br />units per year. <br />Mann Kendall <br />normal approx. _ <br />-3.581. <br />Decreasin trend <br />sigmficanirat 99% <br />confide, c level <br />two tai�e�j. <br />Critical vallue = -2.575. <br />Mar 1994 Apr 2000 May 2006 <br />Constituent: Tetrachloroethylene (ug/L) Facility. Austin Road LF Data File: AUSTINOR <br />Date: 7/14/06,11:51 AM Client: Austin Road LF View: Batch <br />• ® HERST &OCIATES, INC. <br />