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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 /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 04/06/98-04/07/98 Matrix: WATER <br /> Concentration (mg/L) % Recovery <br /> Analyte ISample I Amount I RPD <br /> 1 (#87490) MS MSD I Spiked MS MSD <br /> i I i <br /> TPH (gas) 1 0. 0 111.3 107 .4 I 100 .0 1111.3 107 .4 3 .6 <br />' I Benzene 1 0 . 0 10 .2 9 .9 I 10 . 0 1102 .0 99 .0 3 .0 <br /> Toluene 1 0 . 0 10 . 6 10 .3 I 10 . 0 1106.0 103 .0 2 .9 <br /> Ethyl Benzene I 0 . 0 10 .5 10 .1 I 10 . 0 1105. 0 101.0 3 .9 <br /> Xylenes I 0 . 0 31 .3 30 .1 I 30 . 0 1104 .3 100 .3 3 .9 <br /> I I I I <br /> ITPH(diesel) I 0 174 168 I 150 1 116 112 3 .6 <br /> I I 1 I <br /> TRPH I 0 23800 23600 I 23700 I 100. 100 0 .8 1 <br /> (oil & grease) I <br /> Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br /> 1 <br />