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W <br />110 2nd Avenue South, #D7, Pacheco, CA 94553 <br />McCAMPBELL ANALYTICAL INC. Tele: 510-798-1620 Fax: 510-798-1622 <br />QC REPORT FOR EPA 8010/8020/EDB <br />Date: 09/17/94 <br />Analyte <br />1,1-DCE <br />Trichloroethene <br />EDB <br />Chlorobenzene <br />Benzene <br />Toluene <br />Chlorobz (PID) <br />Matrix: Soil <br />Concentration <br />Sample MS <br />(ug/kg) <br />Amount <br />MSD Spiked <br />% Recovery <br />MS MSD <br />RPD <br />0 <br />96 <br />102 <br />100 <br />96 <br />102 <br />6.1 <br />0 <br />98 <br />104 <br />100 <br />98 <br />104 <br />5.9 <br />0 <br />78 <br />84 <br />100 <br />78 <br />84 <br />7.4 <br />0 <br />100 <br />110 <br />100 <br />100 <br />110 <br />9.5 <br />0 <br />106 <br />114 <br />100 <br />106 <br />114 <br />7.3 <br />0 <br />102 <br />100 <br />100 <br />102 <br />100 <br />2.0 <br />0 <br />102 <br />112 <br />100 <br />102 <br />112 <br />9.3 <br />x Rec. _ (MS - Sample) / amount spiked x 100 <br />RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />