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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 /> 1 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br />' Date 10/30/97 Matrix Water <br />' [ [ Concentration (mg/L) [ [ % Recovery <br /> Analyte [ Sample [ Amount [ RPD <br /> [ <br /> 1 # (82375) MS MSD [ Spiked [ MS MSD <br /> [ TPH (gas) I 0 0 101 3 98 0 [ 100 0 1 101 3 98 0 3 3 [ <br />' I Benzene I 0 0 10 2 10 3 [ 10 0 1 102 0 103 0 1 0 [ <br /> Toluene I 0 0 10 3 10 3 j 10 0 1 103 0 103 0 0 0 1 <br /> Ethyl Benzene I 0 0 10 5 10 3 1 10 0 [ 105 0 103 0 1 9 1 <br /> Xylenes I 0 0 31 7 31 2 1 30 0 1 105 7 104 0 1 6 1 <br /> [TPH(diesel) [ 0 153 156 I 150 102 104 1 9 [ <br /> TRPH I 0 24500 23700 [ 23700 I 103 100 3 3 1 <br /> (oil & grease) I [ <br /> I <br />' V Rec = (Ms sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br /> 1 <br /> I <br />