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McCAMPBELL ANALYTICAL INC 110 2nd Avenue South, #D7,Pacheco, CA 94553 <br /> Tele 510-798-1620 Fax 510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br />' Date: 08/23/95-08/24/95 Matrix: water <br />' Concentration (ug/L) % Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> 1 <br /> TPH (gas) 0 0 108 2 107 5 100 108 107 0.7 <br />' Benzene 0 10 6 9 8 10 106 0 98.0 7 8 <br /> Toluene 0 10.5 9.7 10 105.0 97 0 7. 9 <br /> Ethyl Benzene 0 10.4 9.6 10 104.0 96 0 8.0 <br /> Xylenes 0 33 30.7 30 110.0 102.3 7.2 <br /> TPH (diesel) 0 157 159 150 105 106 0.9 <br /> TRPH N/A N A N A N A N A N <br /> � / / / / /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 />