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YS + <br /> COLUMBIA ANALYTICAL SERVICES,INC. <br /> . QA/QC Report <br /> Client: ARCO Products Company Service Request. 5951020 <br /> Protect. 1775-234 0011 TO# 17075 00 /2168 Stockton Date Collected: 8/15/95 <br /> Sample Matnx Nater Date Received: 8/16/95 <br /> Date Extracted: NA <br /> Date Analyzed: 8/24-25/95 <br /> Surrogate Recovery Summary <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LUFI'Method <br /> Percent Recovery <br /> Sample Name Lab Code «,a,a-Trjfluorotoluene <br /> MW-1 (54) S951020-001 89 <br /> MW-2 (53) S951020-002 87 <br /> MW-3 (53) S951020-003 89 <br /> • MW-4(59) 5951020-004 86 <br /> MW-5 (55) S951020-005 87 <br /> MW-6(46) S951020-006 91 <br /> MW-7(48) 5951020-007 86 <br /> MW-t (54) MS 5951020-OO1MS 95 <br /> MW-1 (54) DMS S951020-OOIDMS 95 <br /> Method Blank S950824-WB 88 <br /> Method Blank S950825-WB 89 <br /> CAS Acceptance Limits 69-116 <br /> SUR1/062"4 <br /> Page 10 <br />