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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: 9/2/94 <br /> Sample Matnx• Water Date Received. 9/6/94 <br /> Date Extracted- 9/16/94 <br /> Date Analyzed- 9/16,17/94 <br /> Surrogate Recovery Summary <br /> TPH as Diesel <br /> EPA Method 3510/Califorrm DHS LUFT Method <br /> Percent Recovery <br /> Sample Name Lab Code p-Terphenyl <br /> MW-1 5941002-001 90 <br /> MW-2 5941002-002 85 <br /> MW-3 5941002-003 95 <br /> MW4 5941002-004 93 <br /> DW-1 5941002-010 83 <br /> Method Blank 5940916-WB 84 <br /> i <br /> CAS Acceptance Limits 66-123 <br /> i 1° <br /> Approved By ' ��E �' Date 1 <br /> SUP If062994 <br /> Page 7 of 11 <br /> 1921 Ringwood Avenue • Son Jose Collfornlo 95131 • Telephone 4081437-2400 • Fox 408/437 9356 <br />