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McCA.MPBELL ANALYTICAL INC. 110 2nd Avenue South, #D7,Pacheco, CA 94553 <br /> Tele:510-798-1620 Fax: 510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 10/19/95 Matrix: Water <br /> Concentration (ug/L) % Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.0 104.1 101.8 100 104 102 2.2 <br /> Benzene 0 8.9 8.8 10 89.0 88.0 1.1 <br /> Toluene 0 8.9 8.4 10 89.0 84.0 5.8 <br /> Ethyl Benzene 0 8.9 8.5 10 89.0 85.0 4.6 <br /> Xylenes 0 28.3 26.9 30 94.3 89.2 5. 1 <br /> TPH (diesel) N/A N/A N/A N/A N/A N/A N/A <br /> • <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 /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br /> • <br />