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110 2nd Avenue South, #D7,Pacheco,CA 94553 <br /> =MCC) <br /> MPBELL ANALYTICAL INC Tele 925-798-1620 Fax 925.798-1622 <br />' QC REPORT FOR HYDROCARBON ANALYSES <br />' Date 08/21/98 Matrix. WATER <br />' I Concentration (mg/L) I I % Recovery <br /> Analyte [Sample I Amount I RPD <br /> 1 (#93743) MS MSD I Spiked I MS MSD <br /> TPH (gas) 0 0 109 1 112 6 100 0 109 1 112 6 3 1 <br /> Benzene 0 0 10 2 10 3 10 0 102 0 103 0 1 0 <br /> Toluene. 0 0 10 8 10 9 10 0 ! 108 0 109 0 0 9 <br /> Ethyl Benzene 0 0 10 5 10 7 10 0 105 0 107 0 1 9 <br /> Xylenes 0 0 31 4 31 7 ; 30 0 104 7 105 7 1 0 <br /> ITPH(diesel) 0 0 169 174 150 113 116 2 8 <br /> TRPH 0 23800 25000 I 23700 100 105 4 9 j <br /> (oil & grease) i I ! l <br />' 3 Rec (MS - Sample) / amount spiked x 100 <br /> RPD (MS - MSD) / (MS + MSD) x 2 x 100 <br />