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1 <br /> McCAMPBELL ANALYTICAL INC 110 2nd Avenue South, #D7, Pacheco, CA 94553 <br /> Tele 510-798-1620 Fax 510-798-1622 <br /> 1 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> ' Date 02/27/97 Matrix Air <br /> Concentration (mg/L) I I % Recovery <br /> Analyte Sample Amount I RPD <br /> 1 (473871) MS MSD Spiked I MS MSD <br /> TPH (gas) I 0 0 92 7 95 6 I 100 0 1 92 7 95 6 3 1 1 <br /> ' Benzene I 0 0 9 5 9 4 1 10 0 I 95 0 94 0 1 1 1 <br /> Toluene I 0 0 9 8 9 8 1 10 0 1 98 0 98 0 0 0 <br /> Ethyl Benzene I 0 0 10 0 10 2 1 10 0 1100 0 102 0 2 0 1 <br /> Xylenes I 0 0 29 9 30 6 1 30 0 I 99 7 102 0 2 3 1 <br /> ITPH (diesel) 0 131 131 I 150 B7 87 0 0 <br /> TRPH I N/A N/A N/A I N/A I N/A N/A N/A <br /> (oil. & grease) <br /> 1 <br /> ' le Rec = (Ms Sample) / amount spiked x 100 <br /> RPD (MS - MSD) / (MS + MSA) x 2 x 100 <br />