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110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> WCAMPBELL ANALYTICAL INC. Tele: 925-798-1620 Fax: 925-798-1622 <br /> QC REPORT FOR. HYDROCARBON ANALYSES <br /> Date: 09/17/99-09/18/99 Matrix: SOIL <br /> Concentration (mg/kg) % Recovery <br /> Analyte Sample Amount RPD <br /> 1 (#12856) MS MSD I Spiked MS MSD <br /> TPH (gas) 0.000 2 .153 2 .154 I 2.03 106 106 0.0 <br /> Benzene 0.000 0.220 0.220 1 0.2 I 110 110 0 .0 <br /> Toluene 0.000 0.224 0.222 1 0.2 112 111 0 .9 1 <br /> Ethylbenzene 0 .000 0.220 0 .222 1 0.2 110 111 0.9 <br /> Xylenes 0.000 0.650 0 .652 0 .6 108 109 0 .3 <br /> TPH(diesel) 0 272 274 300 91 91 0:7 <br /> j I 1 I <br /> TRPH I 0.0 24.2 23 .3 I 20.8 I 116 112 3 .8 <br /> (oil and grease) l <br /> Rec. _ (MS - Sample) / amount spiked x 100 <br /> ' RPD =( (MS - MSD) / (MS + MSD) )x 2 x 100 <br /> r <br /> �k <br />