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1 <br /> AMPBELL ANALYTICAL INC 110 2 <br /> McCnd Avenue South, #D7, Pacheco, CA 94553 <br /> Tele 510-798-1620 Fax 510-798-1622 <br /> 1 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> ' Date, 07/22-07/23/95 Matrix: Water <br /> Concentration (ug/L) Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.0 127 6 120 0 100 128 120 6 2 <br /> ' Benzene 0 10.5 10.5 10 105.0 105.0 0 0 <br /> Toluene 0 10 6 10.6 10 106.0 106.0 0.0 <br /> Ethyl Benzene 0 10.7 10 7 10 107 0 107.0 0 0 <br /> Xylenes 0 33.6 33.7 30 112.0 112.3 0.3 <br /> TPH (diesel) 0 143 141 150 96 94 1.9 <br /> TRPH N/A N/A N/A N/A N/A N/A N/A <br /> ' (oil & grease) <br /> ' % Rec = (MS - Saapte) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />