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110 2nd Avenue South, #D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC Tete 510-798-1620 Fax 510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date 05/29/98 Matrix WATER <br /> Concentration (mg/L) % Recovery <br /> Analyte ISample I Amount I RPD <br /> 1 (#87566) MS MSD I Spiked I MS MSD <br /> TPH (gas) 1 0 0 69 8 87 9 1 100 0 89 8 87 9 2 1 <br /> Benzene 1 0 0 9 1 8 7 10 0 91 0 87 0 4 5 <br /> Toluene 1 0 0 10 0 9 3 10 0 I 100 0 93 0 7 3 <br /> Ethyl Benzene 1 0 0 9 6 9 1 10 0 96 0 91 0 5 3 j <br /> Xylenes 1 0 0 30 3 28 7 I 30 0 101 0 95 8 5 3 <br /> l I <br /> ITPH(diesel) 1 0 144 148 150 96 99 2 9 <br /> TRPH N/A N/A N/A N/A N/A N/A N/A <br /> (oil & grease) <br /> I <br /> Rec - (MS Sample) / amount spiked x 100 <br /> RDD = (MS - MSD) SDd x 2 x X00 <br />