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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 /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 06/16-06/17/95 Matrix: Water <br /> Concentration (ug/L) % Recovery <br /> Analyte Amount RFD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.0 99.7 104.9 100 99.7 104.9 5.0 <br /> Benzene 0 9.9 10.2 10 99.0 102.0 3.0 <br /> Toluene 0 9.8 10.2 10 98.0 102.0 4.0 <br /> Ethyl Benzene 0 9.8 10.1. 10 98.0 101.0 3.0 <br /> Xylenes 0 31.3 31.8 30 104.3 106.0 1.6 <br /> TPH (diesel) 0 158 158 150 105 105 0.1 <br /> TRPH N/A N/A N/A N/A N/A N/A N/A <br /> (oil & grease) <br /> % Rec. a (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />