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' McCAMPBELL ANALYTICAL INC 110 2nd Avenue South, #D7, Pacheco, CA 94553 <br /> Tele 510-798-1620 Fax 510-798-1622 <br /> 1 <br />' QC REPORT FOR HYDROCARBON ANALYSES <br />' Date 03/13/97 Matrix Water <br />' Concentration (mg/L) % Recovery <br /> Analyte I Sample I Amount RPD <br />' I I (n74288) MS MSD I Spiked I MS MSD <br /> i I I I <br /> TPH (gas) I 0 0 89 8 91 2 I 100 0 I 89 8 91 2 1 5 <br />' I Benzene I 0 0 8 6 9 0 1 10 0 I 86 0 90 0 4 5 <br /> Toluene I 0 0 9 0 9 3 1 10 0 I 90 0 93 0 3 3 I <br /> Ethyl Benzene I 0 0 9 3 9 6 1 10 0 I 93 0 96 0 3 2 I <br />' I Xylenes I 0 0 27 7 28 7 I 30 0 I 92 3 95 7 3 5 I <br /> I'TPH (diesel) I N/A N/A N/A I N/A N/A N/A N/A <br />' I I <br /> I TRPH I N/A N/A N/A I N/A I N/A N/A N/A I <br />' (oil & grease) <br />' is Rec = (MS - Sample) / amount spiked x 100 <br /> RPD W (MS - MSD) / (I'S + MSD) x 2 x 100 <br /> I <br /> I <br /> I <br /> I I <br />