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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 07/04/98 Matrix WATER <br /> I Concentration (mg/L) I I % Recovery <br /> Analyte (Sample I Amount I RPD <br /> ' I (#91169) MS MSD I Spiked I MS MSD <br /> I <br /> I <br /> ' f TPH (gas) I 0 0 90 4 B3 9 I 100 0 I 90 4 83 9 7 4 <br /> Benzene 0 0 9 5 9 3 I 10 0 I 95 0 93 0 2 1 <br /> ] Toluene 0 0 10 1 10 0 I 10 0 1101 0 100 0 1 0 <br /> Ethyl Benzene 0 0 10 3 9 9 I 10 0 ( 103 0 99 0 4 0 <br /> Xylenes 0 0 31 7 41 4 I 30 0 1105 7 138 0 26 5 <br /> ITPH(diesel) I N/A N/A N/A I N/A N/A N/A N/A <br /> I I ! <br /> ! I I I <br /> ' 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 <br /> % Rec = (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br /> t <br />