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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: 07/11/98-07/12/98 Matrix: WATER <br /> Concentration (mg/L) I % Recovery <br /> Analyte Isample Amount I RPD <br /> I (#91541) MS MSD I Spiked I MS MSD <br /> I <br /> I <br /> I TPH (gas) I 0.0 117.5 127.2 I 100 .0 1117.5 127.2 7.9 <br /> Benzene I 0.0 10.7 11.1 10.0 1107.0 111.0 3 .7 <br /> Toluene I 0.0 11.1 11.8. 1 10.0 1111.0 118.0 6.1 <br /> Ethyl Benzene I 0 .0 10.9 11.7 I 10.0 1109.0 117.0 7.1 <br /> Xylenes I 0.0 32.4 34.5 I 30.0 1108.0 115.0 6.3 <br /> I I I I <br /> ITPH(diesel) I N/A N/A N/A I N/A I N/A N/A N/A <br /> I I <br /> I I <br /> I TRPH I N/A N/A N/A I N/A I N/A N/A N/A <br /> I (oil & grease) I I <br /> I I 1-1 1 <br /> 8 Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />