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MCCAMPBELL ANALYTICAL INC 110 2nd Avenue South, #D7, Pacheco,CA 94553 <br /> Tele 925-798.1620 Fax 925-798-1622 <br /> 1'46 <br /> QC REPORT FOR VOCs (EPA 8240/8260 } <br /> Date 05/13/99-05/14/99 Matrix AIR <br />' Concentration (ug/kg,ul Recovery <br /> Analyte Sample I Amount RPD <br /> I (#09916) MS MSD Spiked ( MS MSD <br /> 11, 1-Dichloroethel 0 107 102 j 100 107 102 4 8 <br />' Trichloroethene 1 0 86 85 100 86 85 1 2 f <br /> EDB I N/A N/A N/A I N/A N/A N/A N/A <br /> IChlorobenzene 1 0 90 90 1 100 90 90 0 0 <br /> Benzene 1 0 93 93 E 100 93 93 0 0 <br />' Toluene 1 0 80 77 100 80 77 3 6 <br />' $ Rec (MS - Sample) / amount spiked x 100 <br /> RPD = (MS MSA) / (MS + MSD) x 2 x 100 <br /> 1 <br />