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_y <br /> COLUMBIA ANALYTICAL SERVICES, INC <br /> QA/QC Report <br />. Client. EMCON Associates Service Request 5941494 <br /> Project TOSCO # 11194/0952-092 02 Date Collected 11117194 <br /> Sample Matrix Water Date Received '11/21/94 <br /> Date Extracted 11128/94 <br /> Date Analyzed 1211,2194 <br /> Surrogate Recovery Summary <br /> Hydrocarbon Scan <br /> EPA Method 3510/California DHS LUFT Method <br /> Percent Recovery <br /> Sample Name Lab Code p-Terphenvl <br /> 11194-HPI-W 5941494-001 78 <br /> 11194-HP2-W 5941494-002 81 <br /> 11 I 94-HP3-W 5941494-003 85 <br /> 11194-0BS-W-W 5941494-004 76 <br /> 11194-0BS-E-W S941494-005 79 <br /> Method Blank S941128-WB 80 <br /> CAS Acceptance Limits 66-123 <br /> Approved By Lv 4� l � I R <br /> U DatefL% <br /> suauoaIM 14 <br /> Page 7 of 9 <br />