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YES TEST FOR OUTLIERS: NO <br /> 1 ---d OUTLIERS PRESENT? I <br /> TEST FOR N1 NO TEST FOR NORMALITY: <br /> YI <br /> NORMAL DIS NORMAL DISTRIBUTION?l <br /> YES <br /> TRANSFORM DATA <br /> REMOj,,OUTLIERS NO YES <br /> YES USE NOPARAMETRIC <br /> PROCEDURE ROCEDURE I <br /> DETERMINE PERCENTAGE <br /> OF RESULTS(P)ABOVE THE <br /> DETECTION LIMIT(DL)AND <br /> THE NUMBER OF RESULTS <br /> (N)THAT ARE GREATER <br /> THAN THE DL. <br /> P ?-:85% 50%2-: P<85% 10%2-!P<50% P <10% <br /> 0 <br /> YES YES YES PERFORM A <br /> QUALITATIVE <br /> REPLACE NON DETECTS WITH ADJUST THE MEAN AND INTER-WELL <br /> 1/2*DL AND CALCULATE A STANDARD DEVIATION COMPARISON OF <br /> TOLERANCE LIMIT USING COHEN'S METHOD DATA <br /> AND CALCULATE A <br /> TOLERANCE LIMIT USEANINTER-WELL TEST <br /> OF PROPORTIONS <br /> DO VALUES IN THE PROPORTION OF DETECTS <br /> DETECTION WELL EXCEED IN DETECTION MONITORING <br /> THE TOLERANCE LIMIT? WELL EXCEED <br /> NO PROPORTION IN <br /> BACKGROUND WELL <br /> YES SIGNIFICANTLY? <br /> NO STATISTICAL EVIDENCE <br /> OF CONTAMINATION YES <br /> STATISTICALLY <br /> SIGNIFICANT EVIDENCE OF <br /> CONTAMINATION <br /> FIGURE D-1 <br /> SCHEMATIC OF STATISTICAL <br /> ANALYSIS PROCEDURES <br /> CITY OF STOCKTON <br /> 1 CH2MHILL <br />