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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> • Client: EMCON Associates Service Request: L951481 <br /> Project: Federated-Frank's Exxon 1# 2520-100.01 Date Collected: NA <br /> Sample Matrix: 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/California DHS LUFr Method <br /> Percent Recovery <br /> Sample Name Lab Code p-Terphenyl <br /> MW-1 L951481-001 90 <br /> MW-2 L951481-002 111 <br /> MW-3 L951481-003 102 <br /> • MW-4 L951481-004 100 <br /> Method Blank L951491-MB 97 <br /> CAS Acceptance Limits: 50-140 <br /> NA Not Applicable <br /> Approved By: Date: :3/-7/7,D <br /> SURI/062994 . <br /> L951481.XLS-8w-wo&3(7/95 !� -0 4 <br /> PW No.: <br /> 6925 CANOGA AVENUE ! CANOGA PARK, CA 91303 0 1318 587-5550 0 FAX 818 587-5555 <br />