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1 <br /> 110 2nd Avenue South, #D7, Pacheco,CA 94553:1 <br /> 1 McCAMPBELL ANALYTICAL INC Tele 510-798-1620 Fax 510-798-1622 <br /> i <br /> 1 <br /> 1 QC REPORT FOR HYDROCARBON ANALYSES <br /> 1 Date 10/31/97 Matrix Water <br /> 1 f Concentration (mg/L) I % Recovery <br /> Analyte Sample Amount. RPD <br /> 1# (82331) MS MSD Spiked MS MSD <br /> 1 <br /> TPH (gas) 0 0 100 4 102 4 I 100 0 1100 4 102 4 1 9 <br />' Benzene 0 0 10 4 10 5 I 10 0 1104 0 105 0 l 0 <br /> Toluene 0 0 10 4 10 5 I 10 0 1104 0 105 0 l 0 <br /> Ethyl Benzene 0 0 10 6 10 5 10 0 106 0 105 0 0 9 <br /> Xylenes 0 0 31 8 31 9 30 0 1106 0 106 3 0 3 <br /> ITPH(diesel) ( 0 158 157 I 150 105 305 0 4 <br /> TRPH I N/A N/A N/A N/A N/A N/A N/A <br /> (oil & grease) I I I <br />' Rec = (MS - Sample) / amount spiked x 100 <br /> RPD = {MS - MSD) / (MS a MSD) x 2 x 100 <br /> I <br /> I <br />