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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 /> 1 <br />' QC REPORT FOR HYDROCARBON ANALYSES <br /> Date 03/29/97 Matrix Water <br />' I Concentration (mg/L) i % Recovery <br /> Analyte I Sample ( Amount I RPD <br /> I (#74594) MS MSD Spiked I MS MSD <br /> TPH (gas) I 0 0 101 6 103 7 I 100 0 1101 6 103 7 2 0 <br />' I Benzene I 0 0 8 9 8 6 I 10 0 I 89 0 86 0 3 4 <br /> Toluene I 0 0 9 9 9 5 I 10 0 I 99 0 95 0 4 1 <br /> Ethyl Benzene 0 0 10 5 10 2 I 10 0 1105 0 102 0 2 9 <br /> Xylenes 0 0 31 4 31 4 I 30 0 1104 7 104 7 0 0 <br /> ITPH (diesel) 0 139 136 I 150 I 92 91 1 6 <br /> lie <br /> TRPH I N/A N/A N/A I N/A N/A N/A N/A <br /> (oil & grease) <br />' Rec = (MS - Sample) / amount spiked x 100 <br /> RPD - (MS - MSD) / (MS + MSD) x 2 x 100 <br /> 1 <br /> 1 <br /> 1 <br />