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t <br /> 110 2nd Avenue South, #D7,Pacheco, CA 94553 <br /> McCAMPBELL ANALYTICAL INC TTele 510-798-1620 Fax 510-798-1622 <br /> I <br />' QC REPORT FOR HYDROCARBON ANALYSES <br />' Date: 06/16-06/17/95 Matrix: Air <br /> Analyte <br /> ConcentratLon (ug/L) % Recovery <br /> Amount RPD <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) N/A N/A N/A N/A N/A N/A N/A <br /> TRPH N/A N/A N/A N/A N/A N/A N/A <br />' (oil & grease) <br /> 1 <br /> % Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br /> 1 <br />