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McCAMPBELL ANALYTICAL INC. 110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> Tele:510-798-1620 Fax 510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 07/22/97-07/23/97 Matrix: Water <br /> Concentration (mg/L) Recovery <br /> Analyte I Sample Amount RPD <br /> #(78723) MS MSD i Spiked i MS MSD <br /> TPH (gas) 0.0 94.5 94.5 1 100.0 94.5 94.5 0.0 <br /> Benzene 0.0 9.3 9.2 10.0 93 .0 92.0 1.1 <br /> Toluene 0.0 9.9 9.8 10.0 99.0 98.0 1.0 <br /> Ethyl Benzene 0.0 10.2 10.1 10.0 102.0 101.0 1.0 <br /> Xylenes 0.0 30.7 30.3 30.0 102.3 101.0 1.3 <br /> ITPH (diesel) 0 134 136 150 89 90 1.2 <br /> TRPH I 0 27.7 29.6 i 28.0 i 99 106 6.6 <br /> (oil & grease) <br /> W Rec. - (MS - Sample) / amount spiked x 100 <br /> RPD (MS - MSD) / (MS + MSD) x 2 x 100 <br />