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110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Tele:925.798-1620 Fax:925.798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 05/26/99 Matrix: SOIL <br /> Concentration (mg/kg) W Recovery <br /> Analyte Sample Amount RPD <br /> I (#01970) MS MSD I Spiked MS MSD <br /> TPH (gas) 0.000 2.138 2.155 2.03 105 106 0.8 <br /> Benzene 0.000 0.192 0.194 0.2 96 97 1.0 <br /> Toluene 0.000 0.200 0.202 0.2 100 101. 1.0 <br /> Ethylbenzene 0.000 0.202 0.206 0.2 101 103 2.0 <br /> Xylenes 0.000 0.606 0.612 0 .6 101 102 1.0 <br /> TPH(diesel) 0 306 304 300 102 101 0.7 <br /> TRPH 0.0 23 .6 23 .5 20.8 113 113 0.5 <br /> (oil and grease) <br /> & Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPO (MS - MSD) / (MS + MSD) x 2 x 100 <br />