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7 <br /> 110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> MCCAMPBELL ANALYTICAL INC. Tele:510-798-1620 Fax:510-798-16= <br /> 1 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br />' Date: 12/23/97 Matrix: Water <br />' Concentration (mg/L) Recovery <br /> Analyte ISample Amount RPD <br /> 1 (#84363) MS MSD I Spiked I MS MSD <br /> 1 <br /> TPH (gas) 1 0.0 94 . 0 94.4 1 100 .0 94 . 0 94.4 0.5 <br />' Benzene f 0.0 9.0 9.3 10 .0 90.0 93 .0 3 .3 <br /> Toluene 0.0 9.6 10.0 10 .0 96.0 100.0 4 .1 <br /> Ethyl Benzene 0.0 10.3 10 .7 10 .0 f 103.0 107.0 3 .8 <br /> Xylenes 0 .0 31.7 32 .7 1 30. 0 105.7 109.0 3 .1 <br /> ITPH(diesel) 0 144 144 150 I 96 96 0.1 <br /> TRPH I N/A N/A N/A I N/A I N/A N/A N/A <br /> a (oil & grease) <br /> I <br />' Rec. (MS - sample) / amount spiked x 100 <br /> RPD (MS - MSD) / (MS + MSD) x 2 x 100 <br /> i <br /> I <br />