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` COLUMBIA ANALYTICAL SERVICES,INC. � <br /> QA/QC Report <br /> 'I f <br /> Client: EMCON Associates Service Request: S941586 <br /> Project: TOSCO# 11190/0952-088.02 Date Collected: 12/6/94 <br /> Sample Matrix: Soil �! <br /> Date Received: 12/7/94 <br /> Date Extracted: NA <br /> Date Analyzed: 12/8,12/94 <br /> Surrogate Recovery Summ ry <br /> BTEX and TPH as Gasoli11 <br /> ne <br /> EPA Methods 5030/8020/California DHS LUFT Method <br /> , <br /> Percent Recovery <br /> Sample Name Lab Code oc,oc,ac-Trifluorotoluene <br /> 1 <br />' 11190-TSB1S-10 <br /> S941586-001 93 <br /> 11190-TSB 1 S-20 S941586-002 93 <br /> 11190-TSB2S-10 t <br /> 5941586-003 91 I <br /> 11190-TSB2S-20 S941586-004 94 <br /> 11190-TSB3S-10 S941586-005 94 <br /> 11190-TSB3S-20 S941586-006 i' 93 <br /> 11 190TSB4S-30 <br /> S941586-007i'! 86 <br /> 11190-TSB4S-05 S941586-008 l 109 <br /> Method Blank S941208-SB 98 <br /> Method Blank <br /> 5941212-SB 105 <br /> j, <br /> If <br /> r <br /> ij <br /> CASAcceptance Limits: 51-137 <br /> i <br /> d <br /> f <br /> ��JJ I} <br /> Approved By: ( /j n �Qp, ;! Date: /a- -q <br /> SURI/062994 df <br /> Page 7 of 8 <br /> Ij <br />