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110 2nd Ave South,#D7,Pacheco, CA 94553-5560 <br /> MCCA vTBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> http//www mccam bell com E-mail maln@mccampbell com <br /> QC REPORT <br /> EPA 8015m + 8020 <br /> Date 03/05/02 Extraction EPA 5030 Matrix Air <br /> E��Concentrationug& %Recovery <br /> Compound Amount RPD <br /> Sample MS MSD Spiked <br /> MSD <br /> SamplelD 30502 Instrument GC-3 <br /> Surrogatel ND 101 0 1000 10000 101 100 1 0 <br /> Xylenes ND 303 299 30 OD 101 100 1 3 <br /> Ethylbenzene ND 100 99 10 OD 100 99H10 <br /> Toluene ND 99 98 1000 99 98 <br /> Benzene ND 9 6 9 5 10 DO 96 95 L_10 <br /> MTBE ND 91 8 8 1000 91 88 3 4 <br /> TPH (gas) ND 876 86 5 10000 88 86 1 3 <br /> (MS—Saneple <br /> Re covery= AnjountSprked 100 <br /> MS--MSD} <br /> RPD= 2100 <br /> MS+MSD <br /> RPD means Relative Percent Devranon <br />