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McCAMPHELL ANALYTICAL INC. 110 tad Avenue South,#D7,Pacheco,CA 94553 <br /> Tele:510-798-1620 Fac 510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 02/01-02/02/94 Matrix: Water _ <br /> Concentration (ug/L) % Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.0 106.3 106.6 100 106.3 106.6 0.2 <br /> Benzene 0 10.4 10.3 10 104.0 103.0 1.0 <br /> Toluene 0 10.5 10.3 10 105.0 103.0 1.9 <br /> Ethyl Benzene 0 10.6 10.3 10 106.0 103.0 2.9 <br /> Xylenes 0 32.1 31.2 30 107.0 104.0 2.8 <br /> TPH (diesel) N/A N/A N/A N/A N/A N/A N/A <br /> TRPH N/A N/A N/A N/A N/A N/A N/A <br /> (oil & grease) <br /> % Rec. _ (MS - Sample) / amount spiked x 900 -R Fr.F.IV <br /> RPD = (MS - MSD) ! (MS + MSD) x 2 x 900 APR 0 f 1994 <br /> €NVIRONIv:,IN I Al, Ir-iFALTH <br /> PERMIfego-op;P, <br />