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YESTEST FOR OUTLIERS: NO <br /> OUTLIERS PRESENT? <br /> TEST FOR NORMALITY: NO TEST FOR NORMALITY: <br /> NORMAL DISTRIBUTION? NORMAL <br /> =NORMAL DISTRIBUTION' ? <br /> IYES <br /> REMOVE OUTLIERS] --[TENS.FORM DATA NO YES <br /> YES USE NOPARAMETRIC-1 <br /> PROCEDURE <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 205% 50% P<85% 10%?-P<50% P <10% <br /> N'-_3 3 N 2:3 0 N 2-!5 <br /> PERFORM <br /> UALI A, <br /> T V� <br /> YES YES YES PERFORM A <br /> y I r QUALITATIVE <br /> REPLACE NON DETECTS WITH ADJUST THE MEAN AND INTER-WELL <br /> 1/2*DL AND CALCULATE A STANDARD DEVIATION COMPARISON OF <br /> DATA TOLERANCE LIMIT USING COHEN'S METHOD DATA <br /> AND CALCULATE A <br /> TOLERANCE LIMIT. USE AN INTER WELL TEST <br /> IOF 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 /> YES BACKGROUND WELL <br /> SIGNIFICANTLY? <br /> NO <br /> 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 />