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7Mc( AMPBELL ANALYTICAL INC 110 2nd Avenue South, #137, Pacheco, CA 94553 <br /> Tele 510-798-1620 Fax 510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> ' Date: 02/16-02/17/95 Matrix: Water/TCLP <br /> 1Concentration (ug/L) Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MBD <br /> TPH (gas) 0.0 94.4 96.8 100 94.4 96.8 2.6 <br /> 1 Benzene 0 10.5 9.7 10 105.0 97.0 7.9 <br /> Toluene 0 11 10 10 110.0 100.0 9.5 <br /> Ethyl Benzene 0 10.3 9.8 10 103.0 98 0 5.0 <br /> Xylenes 0 31.8 30.1 30 106.0 100 3 5.5 <br /> TPH (diesel) 0 162 172 150 108 115 6.0 <br /> TRPH N/A N <br /> / /A N/A N/A N/A N/A N/A <br /> (oil & grease) <br /> ' % Rec = (MS - Sampte) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS * NSD) x 2 x 1D0 <br />