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TABLE l : QUALITY ASSURANCE DATA MAY 10. 1991 <br /> EPA METHOD 8020 -- AROMATIC VOLATILE ORGANICS (SR58) <br /> Chain of Custody Data Required Far ETC Data HanagemenC Summary Reports <br /> t } a e <br /> See Below., <br /> ETC Batch .No <br /> k <br /> „ t QC Blank arid..5plked'Data QC NaCrlx `Spike ' ;: <br /> QC 'Duplicate <br /> > ' : <br /> Blank Conten; X Ungpl ked Coriceri X <br /> Compound Concent Added Recov -Sample Added Recav FirsCSecond RPD B <br /> mg/kg mg/kg match <br /> mg/kg mg/kg /kg /kg .: <br /> Benzene ND 1.04 90 ND 1.08 60 .644 .698 8 <br /> Ethylbenzene ND 1.04 90 ND 1.08 71 770 783 2 QA10738 <br /> Toluene NND D 1.04 gp ND 1.08 63 .685 721 5 QA10738 <br /> o-X leve ND 1.08 70 728 747 3 QQA10738 <br /> M+p-Xylenes ND 2.08 90 ND 2.16 63 1.38 1.43 3 QA10738 <br />