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110 2nd Ave South,#D7,Pacheco,CA 94553-5560 <br /> McCAIMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> http//www mccampbell com E-mail main@mccampbell com <br /> 1 <br /> QC REPORT <br />' Date 04/17/01 Matrix Air <br /> Extraction T'TLC <br /> Concentration uglL , %Recovery <br /> CompoundI Amount I RPD <br />' Sample MS MSD Spiked IMS MSD <br /> SamplelD 41701 Instrument GC-12 <br />' Surrogatel 0 000 1020 1030 i 10000 102 103 10 <br /> Xylenes 1 0 000 25 5 26 7 f 30 00 85 89 46 <br /> Ethyl Benzene 0 000 84 88 1000 84 88 47 <br />' Toluene 0 000 87 91 1000 1 87 91 45 1E <br /> Benzene 1 0 000 8 8 9 1 1000 i 88 91 34 <br /> MTBE 0 000 8 6 8 5 I 1000 j 86 85 € 1 2 <br /> GAS 0 000 1275 105 1 I� 10000 128 105 19 3 <br /> i <br /> Yo <br /> 1 <br /> MS--sample) <br /> Re covery= Amoudpdpiked t <br /> oo <br /> MS—MSD <br /> RPD= 2100 <br /> (MS+MSD) <br /> RPD meads Relative Percent Deviation <br />