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110 2nd Avenue South, #D7, Pacheco,CA 94553 <br /> WCAMPBELL ANALYTICAL INC Tele 510-798-1620 Fax 510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date 02/25/98 Matrix WATER <br /> 1 1 Concentration (mg/IL) I 1 Recovery <br /> 1 Analyte ISample I Amount I RPD <br /> 1 (m86050) MS MSD I Spiked I MS MSD <br /> f 4 I <br /> I TPH (gas) 1 0 0 98 1 97 3 1 100 0 I 98 1 97 3 0 9 <br /> I Benzene 1 0 0 9 8 10 1 1 10 0 I 98 0 101 0 3 0 I <br /> 1 Toluene I 0 0 10 0 10 5 1 10 0 1 loo 0 105 0 4 9 1 <br /> 1 Ethyl Benzene 1 0 0 10 1 10 5 1 10 0 1101 0 105 0 3 9 1 <br /> 1 xylenes 1 0 0 30 9 31 7 I 30 0 1 103 0 105 7 2 6 1 <br /> I <br /> ITPH(diesel) 1 0 157 133 1 150 I 104 69 16 2 <br /> 1 TRPH I N/A N/A N/A I N/A 1 N/A N/A N/A <br /> 1 (oil & grease) I I <br /> I <br />' % Rec (MS Samnle) / amount sp-ked x 100 <br /> RPD (MS - MSD) / (MS • MSD) x 2 x 100 <br />