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i <br /> 110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC Tele 510-798-1620 Fax 510-798-1622 r. <br /> 1 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> i <br /> ' Date 01/23/98 Matrix AIR <br /> ' Concentration (mg/L) $ Recovery <br /> Analyte ]Sample Amount I RPD <br /> ] (#85080) MS MSD Spiked MS MSD <br /> TPH (gas) f 0 0 97 1 99 5 f 100 0 I 97 1 99 5 2 4 <br /> Benzene 0 0 10 2 10 9 I 10 0 102 0 109 0 6 6 <br /> Toluene f 0 0 10 3 10 4 I 10 0 103 0 104 0 1 0 <br /> Ethyl Benzene I 0 0 10 4 10 5 I 10 0 104 0 105 0 1 0 <br /> Xylenes 0 0 31 5 31 8 30 0 105 0 106 0 0 9 C <br /> ITPH(di.esel) I N/A N/A N/A N/A N/A N/A N/A <br /> TRPH I N/A N/A N/A N/A N/A N/A N/A <br /> ' (oil & grease) i I 1 <br /> ' Rec = (MS - Sample) / amount spiked x 100 <br /> RPD (MS - MSD) / (MS + MSD) x 2 x 100 <br /> 1 <br />