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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: 08/26/97 Matrix: Soil <br /> Concentration (mg/kg) % Recovery <br /> Analyte Sample Amount RPD <br /> (##77621) MS MSD Spiked MS MSD <br /> TPH (gas) I 0 .000 2 .110 2 .197 2 .03 104 108 4.0 <br /> Benzene 0 .000 0 .180 0 .184 0 .2 90 92 2 .2 <br /> Toluene 0 .000 0 .190 0.196 0 .2 95 98 3 .1 <br /> Ethylbenzene 0.000 0.188 0.194 0.2 94 97 3 .1 <br /> Xylenes 0 .000 0 .568 0 .586 0 .6 95 98 3 .1 <br /> TPH(diesel) 0 329 327 300 110 109 0 .6 <br /> TRPH 0.0 19.1 20 .0 20 .8 92 96 4 .6 <br /> (oil and grease) <br /> t Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />