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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: 02/01/95 Matrix: Water <br />' Concentration (ug/L) % Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br />' TPH (gas) 0.0 83.8 80.1 100 83.8 80.1 4.5 <br /> Benzene 0 9.9 9.7 10 99.0 97.0 2.0 <br />' Toluene 0 9.8 9.5 10 98.0 95.0 3.1 <br /> Ethyl Benzene 0 9.6 9.4 10 96.0 94.0 2.1 <br /> Xylenes 0 30 29.2 30 100.0 97.3 2.7 <br /> TPH (diesel) 0 153 153 150 102 102 0.2 <br /> TRPH N/A N/A N/A N/A N/A N/A N/A <br /> (oil & grease) <br /> 1 <br /> % Rec = (MS - Swipte) / amount spiked x 100 <br />' RPD = (MS - MSD) / (MS + MSO) x 2 x 100 <br />