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McCAMPBELL ANALYTICAL INC. 110 2nd Avenue South,#137,Pacheco,CA 94553 <br /> Tele:510-798-1620 Fax:510-798-1622 <br /> I <br /> i <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 01/31/94 Matrix: Water <br /> Concentration (ug/L) % Recovery <br /> Analyte Amount RPD <br /> sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.0 111.0 104.2 100 111.0 104.2 6.3 <br /> Benzene 0 11 10.4 10 110.0 104.0 5.6 <br /> Toluene 0 11.3 10.8 10 113.0 108.0 4.5 <br /> Ethyl Benzene 0 11.1 10.6 10 111.0 106.0 4.6 <br /> Xylenes 0 33.4 31.9 30 111.3 106.3 4.6 <br /> . TPH (diesel) 0 149 146 150 100 97 2.3 <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 100 <br /> RECRIEU <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 A R R Q 7 1994 <br /> ENVIRONMEN rAL HEALTH <br /> PERMIT/SERVICES <br />