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110 2nd Ave South,#D7,Pacheco, CA 94553-5560 <br /> MCCAMPBELL ANALYTICAL INC Teiephone 925-798-1620 Fax 925-798-1622 <br /> hM//www mccampbell com E-mail main@mccampbell com <br /> • QC REPORT <br /> Date 04/13/01-04/14/01 Matrix Air <br /> Extraction TTLC <br /> Concentration ug/L %Recovery <br /> Compound Amount RPD <br /> Sample MS MSD Spiked M5 MSD <br /> SampielD 41301 instrument GC-7 <br /> Surrogate1 0 000 970 960 100 00 97 96 1 0 <br /> Xylenes 0 000 275 270 3000 92 90 18 <br /> Ethyl Benzene 0 000 88 89 1000 88 89 1 1 <br /> Toluene 0 000 89 90 1000 89 90 1 1 <br /> Benzene 0 000 85 87 1000 85 87 23 <br /> MTBE 0 000 94 9 5 1000 94 95 1 1 <br /> GAS 0 000 951 941 10000 95 94 1 1 <br /> • (MS-Sample!) <br /> %Re covery= AmountSpked 100 <br /> MS—MSl7� <br /> RPI)= 2100 <br /> MS+MSD) <br /> RPD means Relative Percent Deviation <br />