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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 /> 1 <br />' Date 09/09/97 Matrix Water <br />' I Concentration (mg/L) % Recovery <br /> Analyte Sample ! Amount RPD <br /> 1 # (80000) MS MSD Spiked MS MSD <br /> TPH (gas) 0 0 99 2 110 9 100 0 I 99 2 110 9 11 2 <br /> Benzene 0 0 9 9 10 3 10 0 99 0 103 0 4 0 <br />' Toluene 0 0 10 0 10 7 I 10 0 100 0 107 0 6 8 <br /> Ethyl Benzene 0 0 10 1 10 7 I 10 0 101 0 107 0 5 8 <br /> Xylenes 0 0 30 4 32 2 30 0 101 3 107 3 5 8 <br /> ITPH(diesel) 0 158 156 150 I 105 104 1 0 <br /> 10 <br /> TRPH I N/A N/A N/A I N/A I N/A N/A N/A <br /> (oil grease) <br />' Rec = (MS - Sample) / amount spiced x 100 <br /> RPD (MS - MSD) / EN'S + MSD) x 2 x 100 <br /> 1 <br />