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110 2nd Ave South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> http//www mccatnpbell co m E-mail main@mccampbell corn <br /> QC REPORT <br /> EPA 8015m + 8020 <br /> Date 12/14/01 Extraction TfLC Matnx Air <br /> ' Concentration ug/L %Recovery <br /> Compound Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> ' SamplelD 121201 Instrument GC-7 <br /> Surrogatel gIN 109 0 107 0 10000 109 107 1 9 <br /> ' Xylenes 30 9 28 6 3000 103 95 7 7 <br /> Ethylbenzene 10 2 9 4 1000 102 94 82 <br /> ' Toluene 10 2 95 1000 102 95d70 <br /> Benzene ND 9 4 88 1000 94 88 <br /> ' MTBE ND 8 9 8 3 1000 89 83TPH (gas) ND 900 904 10000 90 90 <br /> (MS—Smnple� <br /> Re wvery= Aounfsp+ked i00 <br /> n <br /> (A —MSD <br /> RPD= 2 100 <br /> ' (19+MSD) <br /> RPD means Relative Percent Deviation <br />