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110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> Mc ANALlf TICAL INC' Tele 510-798-1620 Fax 510-798-1622 <br /> QC REPORT <br /> Dates 03/0203/02/93 Matrix: Soil <br /> Concentration (mg/kg) t Recovery <br /> Analyte Amount RPD <br /> Sample MS HSD Spiked MS MSD <br /> TPH (gas) 0.000 1.844 1.784 2.03 91 88 3.3 <br /> Benzene 0.000 0.176 0.174 0.2 88 87 1.1 <br /> Toluene 0.000 0.180 0.180 0.2 90 90 0.0 <br /> Ethyl Benzene 0.000 0.178 0.176 0.2 89 88 1.1 <br /> Xylenes 0.000 0.520 0.516 0.6 87 86 0.8 <br /> TPH (diesel) 0 301 301 300 100 100 0.1 <br /> TRPH N/A N/A N/A N/A N/A N/A N/A <br /> (oil & grease) <br /> % Ree. _ (KS - Sample) / amount spiked x 100 <br /> RPD (KS - KSO) / (KS + MSD) x 2 x 100 <br /> 40 <br />