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1 <br /> McCAMPBELL ANALYTICAL INC 110 2nd Avenue South, #D7,Pacheco,CA 94553 <br /> Tele 510-798-1620 Fax. 510-798-1622 <br /> 1 <br /> i <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 01/16/95 Matrix: Air <br /> ' Concentration (ug/L) $ Recovery <br /> Analyte Amount RPD <br /> Sample MS MSA Spiked MS MSD <br /> 1 <br /> TPH (gas) 0.0 100.1 99.4 100 100.1 99.4 0.7 <br /> ' Benzene 0 10.1 10.2 10 101.0 102.0 1.0 <br /> Toluene 0 10.3 11 10 103.0 110.0 6.6 <br /> Ethyl Benzene 0 10 2 10.2 10 102.0 102 0 0.0 <br /> ' Xylenes 0 31.6 31.8 30 105.3 106.0 0.6 <br /> TPH (diesel) N/A N/A N/A N/A N/A N/A N/A <br /> TRPH N/A N/A N/A N/A N/A N/A N/A <br /> (oil & grease) <br /> i <br /> I <br /> ' % Rec = (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />