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FF110 2nd Avenue South, #D7,Pacheco,CA 94553 <br /> McOA PBELL ANALYTICAL INC Tele 510-798-1620 Fax 510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date 12/17/97 Matrix Soil <br /> Concentration (mg/kg) Recovery <br /> Analyte Sample Amount RPD <br /> 1 ('#79438) MS MSD Spiked MS MSD <br /> TPH (gas) 0 000 2 160 1 937 ! 2 03 106 95 10 9 <br /> Benzene 0 000 0 180 0 168 0 2 1 90 84 6 9 <br /> Toluene 0 000 0 198 0 186 0 2 99 93 6 3 <br /> Ethylbenzene 10 000 0 208 0 192 0 2 104 96 8 0 <br /> Xylenes 0 000 0 630 0 586 0 6 f 105 98 7 2 <br /> TPH(diesel) I 0 289 294 300 96 98 1 8 <br /> TRPH 0 0 31 7 28 9 I 30 106 96 9 2 <br /> (02.1 and grease) l <br /> 4 Rec = (ms sample) / amount spiked x 100 <br /> RFP = (MS - MSE)) / (MS + MSD) x 2 x 100 <br /> a <br /> a <br />