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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 03/31/97 Matrix Water <br />' I I Concentration (mg/L) I I % Recovery <br /> Analyte I Sample I Amount I RPD I <br /> I (474710) MS MSD I Spiked I MS MSD I <br /> TPH (gas) I 0 0 96 1 93 3 1 100 0 1 96 1 93 3 3 0 1 <br /> ' I Benzene I 0 0 10 6 10 5 1 10 0 1 106 0 105 0 0 9 f <br /> Toluene I 0 0 11 1 10 9 1 10 0 1 111 0 109 0 1 8 1 <br /> Ethyl Benzene I 0 0 11 5 13. 3 1 10 0 1 115 0 113 0 1 8 <br /> Xylenes I 0 0 34 5 33 6 1 30 0 1 115 0 112 0 2 6 1 <br /> ITPH (diesel) I 0 140 139 I 150 I 93 93 0 9 1 <br /> I TRPH I N/A N/A N/A I N/A I N/A N/A N/A <br /> ' (oil & grease) <br /> 1 <br /> ' Ir Rec = (MS - Sample) / amount spiked x 100 <br /> RFA = (MS - MSD) / (MS + MSD) x 2 x 100 <br />