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McCAMPBELL ANALYTICAL INC. 110 Ind Avenue South,*D7,Pacheco,CA 94553 <br /> Tele:925-798-1620 Fac:925-798-1622 <br /> QC REPORT FOR VOCs (EPA 8240/8260 ) <br /> Date: 04/10/99-04/11/99 Matrix: WATER <br /> Concentration (ug/kg,ul t Recovery <br /> Analyte I sample I Amount RPD <br /> Imam) MS MSD j Spiked I MS MSD <br /> 11,1-Dichloroethel 0 100 100 1 100 1 100 100 0-0 <br /> Trichloroethene 1 0 85 61 1 100 85 81 4.8 <br /> (EDS I N/A N/A N/A N/A NIA N/A N/A <br /> IChlorobenzene 1 0 80 77 100 80 77 3.8 <br /> Benzene 1 0 115 107 100 115 107 7.2 <br /> Toluene 1 0 90 82 100 ` 90 82 9.3 <br /> Rec. = (MS - Semple) / amount spiked x log <br /> RPD - [MR - MOP; / (MS . MSD) x 2 x 100 <br />