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Calculation of RPD <br /> for BP Oil QAIOC Program <br /> BP Oil Station 11194 10/15/96 Event <br /> Analytical TPHg Benzene Toluene Ethylbenzene Xylenes MTBE <br /> Data <br /> Primary Sample 2,100 39 ND<10 160 190 ND<100 <br /> QC-1 Duplicate 1,100 22 ND<5 0 75 85 ND<50 <br /> Sample 1,600 31 n/a 118 138 n/a <br /> Mean <br /> RPD 62 5016 55749/6 n/a 7234% 76 36% n/a <br /> Significant YES YES n/a YES YES n/a <br /> Result? <br /> Notes <br /> (1) Sign licance is defined as an RPD greater than 30%(or less than-30) <br /> (2) "A negative'RPD will result if the value of the Primary Sample Result is smaller than QC-1 <br /> The determination of Significant Result is not affected by sign of RPD <br /> f 1gpr041BPoikRPD-QaQc WQ2 <br />