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110 2nd Avenue South, #D7, Pacheco, CA 94553 <br /> McCAMPBELL ANALYTICAL INC Tele 510-798-1620 Fax 510-798-1622 <br /> 1 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 05/13/95 Matrix Water <br /> Concentration (ug/L) % Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSA <br /> ' TPH (gas) 0.0 105 5 97.3 100 105.5 97.3 8.2 <br /> Benzene 0 9 9 5 10 90.0 95.0 5 4 <br /> Toluene 0 9.2 9.7 10 _ 92.0 97.0 5.3 <br /> Ethyl Benzene 0 9.3 9.9 10 93.0 99.0 6 2 <br /> Xylenes 0 29.3 30.6 30 97.7 102.0 4.3 <br /> ' TPH (diesel) 0 148 149 150 98 100 1.2 <br /> �} TRPH N/A N/A N/A N/A N/A N/A N/A <br /> (oil & grease) <br /> 1 <br /> % Rec = (MS - Sampte) / amount spiked x 100 <br /> tRPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />