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COLUMBIA ANALYTICAL SERVICES,INC <br /> QA/QC Report <br /> • Cheut• EMCON Service Request: L952307 <br /> Protect: Federated Manteca/#2520-100 01 Date Collected: NA <br /> Sample Matn7i. Water Date Received: NA <br /> Date Extracted: NA <br /> Date Analyzed: NA <br /> Surrogate Recovery Summary <br /> Total Petroleum Hydrocarbons as Diesel <br /> EPA Method Modified 8015/Callforma DHS LUFT Method <br /> Percent Recovery <br /> Sample Name Lab Code p-Terphenyl <br /> Mw_1 L952307-001 93 <br /> MW-2 L952307-002 112 <br /> MW-3 L952307-003 102 <br /> MW-4 L952307-004 96 <br /> Method Blank L952307-MB 123 <br /> CAS Acceptance Limits. 50-140 <br /> NA Not Applicable <br /> i <br /> Approved By Date <br /> S MUMM4 <br /> L5523V XLS 30 UWS YMS Pia No <br /> 6925 CANOGA AVENUE 0 CANOGA PARK CA 91303 ■ 818 587 5550 0 FAX 818 587-5555 <br />