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110 2nd Avenue South,#D7, Pacheco,CA 94553 <br /> 1—McCAMPBELL ANALYTICAL INC Tele 510-798-1620 Fax 510-798-1622 <br /> QC REPORT FOR VOCs (EPA 8240/8260 ) <br /> 1 <br /> tDate 09/23/97 Matrix Air <br /> ' I I Concentration (ug/kg,ul I Recovery <br /> 1 Analyte 1 Sample I Amount RPD <br /> W60888) MS MSD I Spiked MS MSD <br /> 11, 1-Dichloroethel 0 0 100 0 97 0 1 100 I 100 97 3 0 1 <br /> ' ITrichloroethene 1 0 0 83 0 83 0 1 100 1 83 83 0 0 1 <br /> 1EDB 1 0 0 95 0 89 0 1 100 1 95 89 6 5 1 <br /> IChlorobenzene 1 0 0 97 0 93 0 1 100 1 97 93 4 2 1 <br /> IBenzene 1 0 0 105 0 101 0 1 100 1 105 101 3 9 1 <br /> ' !Toluene f 0 0 101 0 100 0 i 100 i 101 100 1 0 <br /> Rec (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br /> 1 <br /> 1 <br />