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110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC Tele 510-798-1620 Fay 510-798-1622 r, <br /> I <br /> ' QC REPORT FOR HYDROCARBON ANALYSES <br /> Date 02/19/98 Matrix AIR <br /> ' I Concentration (mg/L) I I * Recovery I <br /> I Analyte ISample I Amount I RPD <br /> I I (#85900) MS MSD I Spiked I MS MSD I <br /> t I I I I <br /> I TPH (gas) 1 0 0 92 6 96 3 1 100 0 1 92 6 96 3 3 9 1 <br /> ' I Benzene 1 0 0 9 3 9 4 1 10 0 1 93 0 94 0 1 1 1 <br /> Toluene I 0 0 9 7 9 8 1 10 0 1 97 0 98 0 1 0 1 <br /> Ethyl Benzene I 0 0 9 6 9 8 1 10 0 1 96 0 98 0 2 1 1 <br /> ' I Xylenes I 0 0 29 2 29 8 1 30 0 1 97 3 99 3 2 0 1 <br /> 1 <br /> ITPH(diesel) I N/A N/A N/A I N/A I N/A N/A N/A <br /> lie 1 I <br /> I TRPH I N/A N/A N/A I N/A I N/A N/A N/A <br /> ' 1 (oil & grease) 1 1 <br /> I I I I <br /> 1 <br /> % Rec = (MS - Sample) / amount spiked x 100 <br /> RPD (MS - MSD) / (MS + MSD) x 2 x 100 <br /> I <br /> I <br />