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MCCAMPBELL ANALYTICAL INC. 110 2nd Avenue South, #D7, Pacheco,CA 94553 <br /> • Tele: 925-798-1620 Fax:925-798-1622 <br /> 1 <br />' QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 09/01/98-09/02/98 Matrix: AIR <br /> I Concentration (mg/L) I I % Recovery 1 <br /> I Analyte 15ample I Amount I RPA I <br />' 1 (#94114) MS MSD i Spiked i MS MSD <br /> I I <br />' I TPH (gas) 1 0.0 91.3 96.6 1 100.0 1 91.3 96.6 5.7 1 <br /> I Benzene 1 0.0 8.9 9.1 1 10.0 1 89. 0 91.0 2 .2 <br /> I Toluene 1 0 .0 9.2 9.4 I 10.0 I 92. 0 94.0 2 .2 1 <br /> I Ethyl Benzene 1 0.0 9.4 9.7 I 10.0 I 94.0 97.0 3 .1 <br />' I Xylenes 1 0.0 28.6 29.3 I 30.0 I 95.3 97.7 2.4 <br /> I I I f <br />'. ITPH(diesel) I N/A N/A N/A i N/A i N/A N/A N/A <br /> I ! I I ! <br /> I TRPH I N/A N/A N/A I N/A I N/A N/A N/A I <br /> j I (oil & grease) I I I <br /> I I f f <br /> Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD (MS MSD) / (MS + MSD) x 2 x 100 <br /> 1 <br />