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t110 2nd Avenue South, #D7, Pachcco, CA 94553 <br /> McCAhiPBELL ANALYTICAL INC. I Te[e: 510-798-1620 Fax:510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> ' Date: 10/31/95 Matrix: Air <br /> Concentration (ug/L) % Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> 1 TPH (gas) 0.0 99.1 105.5 100 99 105 6.2 <br /> Benzene 0 8.9 9.4 10 89.0 94.0 5.5 <br /> Toluene 0 8.6 9.1 10 86.0 91.0 5.6 <br /> ' Ethyl Benzene 0 8.8 9.5 10 88.0 95.0 7.7 <br /> Xylenes 0 27.7 30 30 92. 3 100.0 8.0 <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 'I/A N/A N/A <br /> (oil & grease) <br /> 1 <br /> ' % Rec. = (MS - Samp(e) / amount spiked x 100 <br /> ' RPD = (MS MSD) / (MS + MSD) x 2 x 100 <br /> 1 <br /> 1 <br />