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110 2nd Avenue South, #D7,Pacheco, CA 94553 <br /> WCAMPBELL ANALYTICAL INC Tele 925-798.1620 Fax 925-798-1622 <br /> 1 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br />' Date 10/14/99 Matrix WATER <br />' f I Concentration (ug/L) I I % Recovery <br /> Analyte ISample I Amount I RPD <br /> 1 (#22100) MS MSD I Spiked I Ms MSD <br /> TPH (gas) I 0 0 89 7 89 8 I 100 0 ( 89 7 89 8 0 1 <br />' I Benzene I 0 0 9 1 9 4 I 10 0 I 91 0 94 0 3 2 <br /> Toluene I 0 0 9 7 10 1 I 10 0 ( 97 0 101 0 4 0 <br /> Ethyl Benzene I 0 0 9 6 10 3 I 10 0 96 0 103 0 7 0 <br />' Xylenes I 0 0 29 9 32 0 I 30 0 I 99 7 106 7 6 8 <br /> 1 <br /> ITPH(diesel) I 0 0 8230 8171 I 7500 I 110 109 0 7 I <br /> I I I I I <br /> I TRPH I 0 24400 24700 I 23700 I 103 104 1 2 <br />' (oil & grease) I I I I <br /> 1 <br />' Rec = {MS - Sample) / amount spiked x 100 <br /> RPD ({MS - MSI)) / NS + MSD))x 2 x 100 <br /> 1 <br /> • <br />