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FWCAMPBELL ANALYTICAL INC10 2nd Avenue South, #D7,Pacheco, CA 94553 <br /> ANALYTICAL INC Tele 510-798-1620 Fax 510-798-1622 <br /> 1 <br />' QC REPORT FOR HYDROCARBON ANALYSES <br />' Date: 03/07/95 Matrix: Air <br />' Concentration (ug/L) % Recovery <br /> Analyte Amount RPD <br />' Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.0 91 3 93 2 100 91.3 93 2 2. 1 <br />' Benzene 0 9 1 9. 5 10 91.0 95 0 4.3 <br /> Toluene 0 9 5 9.8 10 95 0 98.0 3.1 <br /> Ethyl Benzene 0 9.4 9.6 10 94 0 96.0 2. 1 <br />' Xylenes 0 29 29.9 30 96.7 99 7 3. 1 <br /> l <br /> TPH (diesel) N/A N/A N/A N/A N/A N/A N/A <br /> ie <br /> TRPH N/A N/A N/A N/A N/A N/A N/A <br />' (oil & grease) <br /> % Rec = (MS - Sample) / amount spiked x 100 <br /> RPD = (MS MSD) / (MS + MSD) x 2 x 100 <br />