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McCAMPBELL ANALYTICAL INC 110 2nd Avenue South,#137, Pacheco,CA 94553 <br /> Tele 510-798-1620 Fax 510-798-1622 <br /> QC REPORT FOR VOCs (EPA 8240/8260 ) <br /> Date 04/01/98 Matrix WATER <br /> Concentration (ug/kg,ul 1 Recovery <br /> Analyte Sample 1 Amount I RPD <br /> 1 (#87738) MS MSD 1 Spiked I MS MSD <br /> 11, 1-Dichloroethel 0 83 8B 1 100 1 83 88 5 8 1 <br /> 1Trichloroethene 1 0 82 84 1 100 l 82 84 2 4 1 <br /> 1ED13 l N/A N/A N/A 1 N/A 1 N/A N/A N/A 1 <br /> 1Chlorobenzene 1 0 99 105 l 100 1 99 105 5 9 1 <br /> 1Benzene 1 0 106 113 1 100 1 106 113 6 4 1 <br /> 1Toluene 1 0 102 110 1 100 1 102 110 7 5 1 <br /> $ RBC = (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br /> { <br />