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McCAMPBELL ANALYTICAL INC 110 2nd Avenue South, #D7,Pacheco,CA 94553 <br /> 16 Tele 510-798-1620 Fax 510-798-1622 <br />' QC REPORT FOR HYDROCARBON ,ANALYSES <br /> Date 06/05/98 Matrix AIR <br /> ' I Concentration (mg/L) I I % Recovery <br /> I Analyte Isample I Amount I RPD f <br /> i a (489965) MS MSD f Spiked I MS MSD <br /> I 1 I I I <br /> TPH (gas) I 0 0 94 4 87 8 I 100 0 I 94 4 87 8 7 2 <br /> ' Benzene 0 0 10 5 9 2 I 10 0 1105 0 92 0 13 2 <br /> Toluene I 0 0 10 4 9 5 I 10 0 1104 0 95 0 9 0 <br /> Ethyl Benzene 0 0 10 6 9 7 I 10 0 1106 0 97 0 8 9 <br /> 1 I Xylenes I 0 0 31 9 26 2 I 30 0 1106 3 94 0 12 3 <br /> ITPH(diesel) I N/A N/A N/A I N/A I N/A N/A N/A <br /> I I <br /> I TRPH I N/A N/A N/A I N/A N/A N/A N/A <br /> (oil & grease) I I i <br /> 9c Rec = (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / fMS + MSD) x 2 x 100 <br />