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110 2nd Avenue South,#D 7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Tele: 925-798-1620 Fax.925-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 02/23/99 Matrix: SOIL, <br /> Concentration (mg/kg) I I Recovery [ <br /> Analyte Sample I Amount [ RPD <br /> 1 (r99'798) MS MSD I Spiked 1 MS MSD <br /> I I I I I <br /> TPH (gas) 0.000 2 .171 2 .086 I 2 .03 107 103 4.0 <br /> 1 Benzene 0.000 0 .202 0.212 I 0 .2 101 106 4.8 1 <br /> 1 Toluene 0.000 0 .220 0.216 0 .2 110 108 1.3 1 <br /> 1 Ethylbenzene I 0.000 0 .212 0.208 0 .2 106 104 1.9 1 <br /> Xylenes 0.000 0 .608 0.606 0 .6 101 101 0.3 1 <br /> 1 1 1 <br /> 1 1 <br /> TPH(diesel) 0 291 289 300 f 97 96 0.6 1 <br /> I � 1 <br /> 1 TRPH N/A N/A N/A N/A N/A N/A N/A 1 <br /> 1 (oil and grease) I <br /> I I 1 1 1 <br /> Rec. = (MS - Sample) / amot:nt spiked x 100 <br /> RBD (MS - MSD) / (MS + MSD) x 2 x 100 <br />