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110 2nd Avenue South, #D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Tele:510-798-1620 Fax:510-798-1622 <br /> i <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 06/24/97 Matrix: Soil <br /> Concentration (mg/kg) 1 % Recovery ! <br /> 1 Analyte I Sample ! Amount I RPD <br /> 1 (#75871) MS MSD I Spiked 1 MS MSD <br /> TPH (gas) 1 0 .000 1.891 1. 857 1 2 .03 1 93 91 1 .8 1 <br /> Benzene 0 .000 0 .166 0 . 168 1 0 .2 1 83 84 1 .2 1 <br /> Toluene 0 . 000 0.176 0 . 184 1 0 .2 I 89 92 3 .3 1 <br /> 1 Ethylbenzene , 0 .000 0 .170 0 .172 1 0 .2 1 85 86 1 .2 1 <br /> 1 Xylenes 0 .000 0.510 0 .522 1 0 .6 1 85 87 2 .3 1 <br /> I I I II <br /> 1 TPH (diesel.) 1 0 352 352 1 300 1 117 117 0 .1 1 <br /> 1 1 I ! f <br /> 1 TRPH 1 N/A N/A N/A 1 N/A I N/A N/A N/A <br /> 1 (oil and grease) 1 <br /> 1 I I I <br /> g Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / iMS + MSD) x 2 x 100 <br />