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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 07/28/97 Matrix Water <br /> Concentration (mg/L) , Recovery <br /> Analyte 1 sample Amount j RPD <br /> i <br /> 1# (78950) MS MSD Spiked MS MSD <br /> 1 <br /> TPH (gas) 1 0 0 103 3 102 S 1 100 0 103 3 102 5 0 8 <br /> Benzene 1 0 0 9 9 10 0 10 0 99 0 100 0 1 0 <br />' Toluene 0 0 10 7 10 4 1 10 0 107 0 104 0 2 8 <br /> Ethyl Benzene 0 0 10 8 10 8 1 10 0 1108 0 108 0 0 0 <br /> Xylenes 0 0 32 5 32 0 1 30 0 108 3 106 7 1 6 <br /> ITPH (diesel) 0 136 133 j� 150 1 91. 89 2 5 j <br /> 1 <br /> TRPH I N/A N/A N/A N/A N/A N/A N/A <br /> (oil & grease) <br /> g Rec (MS - Samnle) / ariount spiked x 100 <br /> RPA = (MS - MSI)) / (MS + 4SD) x 2 x 100 <br /> 1 <br />