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D7cCABELL ANALYTICAL INC 110 2nd Avenue South,#D7, Pacheco, CA 94553 <br /> ' Tele 925.798-1620 Fax 925-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date 05/14/99 Matrix AIR <br /> ' Concentration (ug/L) Recovery <br /> Analyte Isample Amount RPD <br /> 1 (#10370) MS MSD Spiked MS MSD <br /> 1 I i <br /> I TPH (gas) 1 0 0 104 4 100 8 100 0 104 4 100 8 3 5 f <br />' I Benzene 1 0 0 9 2 9 1 10 0 I 92 0 91 0 1 1 f <br /> Toluene 1 0 0 9 2 9 3 10 0 92 0 93 0 1 1 <br /> Ethyl Benzene 1 0 0 9 4 9 5 10 0 94 0 95 0 1 1 <br /> Xylenes 1 0 0 29 9 28 6 30 0 99 7 95 3 4 4 <br /> ITPH(diesel) I N/A N/A N/A N/A I N/A N/A N/A <br /> I 1 <br /> TRPH I 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 />