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4r <br /> LOCATION: NP-1-22 Trends After System Upgrade <br /> COMPOUND x COMPOUND <br /> Z <br /> Date <br /> co <br /> a /l u li Date u /l WWI) <br /> December 2000 16,800 1,100 Fe rua 2002 12,000 260' <br /> Februa 2001 5,340 -98.5 a 2002 9,000 260 <br /> May 2001 8,700 161 : August 2002 : 110 2..1 <br /> August 2001 9,100 200 November 2002 ,120 2 <br /> ovember 2001 7,500 190 ebrua 2003 25 0.25 <br /> February2002 12,000 260 a 2003 25 0.25 <br /> May 2002 .9;000 260 u ust 2003 25 0.25 <br /> August 2002 110 2.1 December 2003 950 . 7 <br /> November 2002 120 2 ebrua 2004 880 6..1 <br /> February 2003 25 0.25 April 2004 <br /> May 2003 25 0.25 August 2004 25 0.25 <br /> August 2003 25 0.25 ovem er 200 25 0.25 <br /> December 2003 950 7 7 February2005 25 0.25 <br /> February 2004 880• 6.1STATISTICS <br /> April 2004 Analysis Count 12 <br /> August 2004 25 0.25 S -12 12 12 <br /> November30 <br /> 2004 25 0.25 1 Mann-Kendall P 0.0265 0.022 <br /> February 2005 25 0.25 Trend est Resu t at: DownwardDownward- <br /> 95% <br /> STATISTICS 90%confidence Downward Downwar <br /> Trend Trend <br /> Analysis Count 17 17 80%confidence awnward ownwardI <br /> S -77 -74 <br /> 1 Mann-Kendall P 0.0005 0.001 <br /> Trend Testesu t at: Downward DownwarEF <br /> 0 confidence Trend Trend_ <br /> 90%confidence Downward ownwar <br /> Trend <br /> 80%confidence Downward Downward <br /> Trend Trend <br /> 2 Sloe(Units/yr) -2495 -45 <br /> V 1.29 1.99 <br /> NOTES: (1) P is the probability(out of 1.0)of no significant trend (> 3 analyses req'd) <br /> This value must be< 0.1 for a significant trend to exist at 90%confidence (Gilbert 1987) <br /> This value must be<0.2 for a significant trend to exist at 80%confidence(Gilbert 1987) <br /> Trend analysis not performd at locations where the majority of concentration values were non-detect <br /> Non-detects entered as 1/2 the detection limit and italicized. <br /> NP-1-22 <br /> Table 3-4 & Appendix A mann-kendall <br />