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QUALITY CONTROL REPORT <br /> r <br /> METHOD BLANK <br /> Method Mod EPA 8020 (BTEX) Date Analyzed 06/11/93 <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-Trxfluorotoluene 91 80 - 120 <br /> MBT Environmental - <br /> Laboratories € k'a " <br />' 11"11 <br /> (DC2-CN7639B) <br /> �r <br />