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110 2nd Avenue South, #D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC Tele 510-798-1620 Fax 510-798-1622 <br /> QC REPORT FOR VOCs (EPA 8240/8260 1 <br /> I <br /> ' Date 08/18/97 Matrix Water <br /> l I Concentration (ug/kg,ul l Recovery I <br /> l Analyte J I Amount l RPD J <br /> I J Sample MS MSD l spiked l MS MSD J <br /> 11, 1-Dichloroethel 0 0 100 0 97 0 l 100 l 100 97 3 0 l <br /> JTrachloroethene l 0 0 83 0 83 0 l 100 l 83 83 0 0 l <br /> IEDB l 0 0 95 0 89 0 l 100 l 95 89 6 5 l <br /> JChlorobenzene l 0 0 97 0 93 0 l 100 l 97 93 4 2 l <br /> lBenzene l 0 0 105 0 101 0 l 100 l 105 101 3 9 l <br /> (Toluene l 0 0 101 0 100 0 l 100 l 101 100 1 0 1 <br /> ' Rec = (MS - Sample) / amount spikea x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br /> I <br /> i <br />