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110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Tele:510-798-1620 Fax:510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 07/08/98-07/09/98 Matrix: WATER <br /> Concentration (mg/L) I % Recovery <br /> I Analyte Isample Amount I RPD <br /> I (#91209) MS MSD I Spiked I MS MSD <br /> I <br /> TPH (gas) I 0 .0 96.6 94 .8 I 100 .0 I 96.6 94 .8 1.8 <br /> Benzene I 0 .0 9.2 9.1 I 10 .0 I 92.0 91.0 1.1 <br /> Toluene I 0 .0 9.6 9.6 I 10 .0 I 96.0 96.0 0 .0 <br /> Ethyl Benzene I 0 .0 10.0 9.9 I 10 .0 1100.0 99.0 1.0 <br /> Xylenes I 0.0 29.9 29.7 I 30.0 I 99.7 99.0 0.7 <br /> I I I I <br /> ITPH(diesel) I 0.0 160 156 I 150 I 107 104 2.3 <br /> I I I I <br /> � I I <br /> TRPH I N/A N/A N/A I N/A I N/A N/A N/A <br /> (oil & grease) I <br /> I 1-1 I <br /> 7 Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />