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QUALITY CONTROL REPORT <br /> METHOD BLAPK <br /> Method Mod EPA 8020 (BTEX) Date Analyzed 06/09/93 <br /> Units ug/L (ppb) <br /> Reporting <br /> Analyte Limit Concentration <br /> Benzene 0 50 BRL <br /> Toluene 0 50 BRL <br /> Ethylbenzene 0 50 BRL <br /> 1,2-Xylene 0 50 BRL <br /> 1,3-Xylene 0 50 BRL <br /> 1,4-Xylene 0 50 BRL <br /> Surrogate $ Recovery Acceptance Limits <br /> a,a,a-Trifluorotoluene 93 80 - 120 <br /> 1 <br /> MBT Environmental <br /> Laboratories <br /> (DC2-CN7639B) <br /> g� <br />