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110 2nd Avenue South,#137,Pacheco,CA 94553 <br />' 1--mcCAMPBELL ANALYTICAL INC Tele 510-798-1620 Fax 510-798-1622 <br /> • <br /> 1 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> I <br /> Date 07/17/97 Matrix Air <br />' 1 I Concentration (mg/L) I 1 Recovery <br /> Analyte I Sample I Amount RPD 1 <br /> 1# (78692) MS MSD Spiked I MS MSD 1 <br /> II I N <br /> TPH (gas) I N/A N/A N/A N A 1 / I /A N/A N/A <br />' Benzene 1 N/A N/A N/A 1 N/A I N/A N/A N/A 1 <br /> 1 Toluene 1 N/A N/A N/A 1 N/A , N/A N/A N/A 1 <br /> Ethyl Benzene 1 N/A N/A N/A 1 N/A I N/A N/A N/A 1 <br /> 1 Xylenes 1 N/A N/zk N/A N/A 1 N/A N/A N/A <br /> 1-1 <br /> I I 1 I I <br /> 1TPH (diesel) 0 131 131 1 150 1 87 87 0 1 1 <br /> TRPH 1 N/A N/A N/A 1 N/A 1 N/A N/A N/A 1 <br /> j (oil & grease) 1 I 1 <br /> 1 <br /> Rec (MS - Sample) / amount spaked x 160 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />