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110 2nd Avenue South, #D7, Pacheco, CA 94553 <br /> 16 MCCAMPBELL ANALYTICAL INC. Tele: 925-798-1620 Fax: 925-798-1622 <br /> ' QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 06/04/99 Matrix: SOIL <br /> ' Concentration (mg/kg) °s Recovery <br /> Analyte } Sample Amount RPD <br /> � (#01963) MS MSD I Spiked MS MSD 1 <br /> TPH (gas) 0 . 000 1.462 1.578 I 2 .03 72 78 7 .6 <br /> Benzene I 0 . 000 0 . 198 0 .196 I 0 .2 I 99 98 1. 0 <br /> Toluene 0. 000 0 .202 0 .214 0.2 101 107 5 . 8 <br /> Ethylbenzene 0 . 000 0 .202 0 .202 0.2 I 101 101 0 .0 <br /> Xylenes 0 . 000 0. 608 0 .606 0 .6 101 101 0 .3 <br /> TPH(diesel) I 0 343 347 I 300 114 116 1 .3 <br /> TRPH 0.0 31.5 29. 8 23 .7 133 126 5 .5 <br /> ' (oil and grease) i <br /> ' & Rec. = (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br /> 1 <br />