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1 <br /> COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client EMCON Assoicates Service Request 5941002 <br /> Project: Federated Franks-Exxon 12520-100 01 Date Collected: 912194 <br /> Sample Matrix: Water Date Received: 916194 <br /> Date Extracted- NA <br /> Date Analyzed: 9114194 <br /> Surrogate Recovery Summary <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/Califonua DHS LUFT Method <br /> Percent Recovery <br /> Sample Name Lab Code a.,a.,a-Tnfluorotoluene <br /> DW-2 5941002-012 93 <br /> Method Blank 5940914-WB 96 <br /> i <br /> CAS Acceptance Limits 69-116 <br /> Approved By / m Date / ?✓�r L�� �" <br /> SUR 11062994 ` <br /> Page 4 of 4 <br /> 4921 Ringwood Avenue • Son Jose California 95131 • Telephone 4081437 2400 • Fax 4081407 9356 <br />