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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report '-� �• <br /> Client: EMCON Associates Service Request:q 5441424 <br /> Project: TOSCO#11192/0952-090.02 Date Collected: 11/9,10/94 <br /> Sample Matrix: Water Date Received: 11/11/94 <br /> Date Extracted: NA <br /> Date Analyzed: 11/14/94 <br /> Surrogate Recovery Sununary <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LUFT Method <br /> Percent Recovery <br /> Sample Name Lab Code m a,a-Trifluorotoluene <br /> 11192-THP4W-36 S941424-009 93 <br /> 11192 THP3W-28 S941424-010 93 <br /> Method Blank S941114 WB 92 <br /> CAS Acceptance Limits: 69-116 <br /> Approved By: ,d�Ld ,�O�i,._ _Date: <br /> SUAUMd"94 <br /> Page 12 of 15 <br /> ...J F. <br />