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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/#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 /> 1,2-Dichloroethane(EDC) <br /> EPA Method 601 <br /> Percent Recovery <br /> Sample Name Lab Code 4-Bromofluorobenzene <br /> MW-I L951481-001 103 <br /> MW-2 L951481-002 93 <br /> MW-3 L951481-003 99 <br /> • MW-4 L951481-004 99 <br /> MW-5 L951481-005 90 <br /> Method Blank L951481-MB 95 <br /> CAS Acceptance Limits: 50-130 <br /> NA Not Applicable <br /> Approved By: Date: <br /> SLjRIM2994 0 0 0 3 <br /> 193148I.XL5-genal I Page Ho.: <br /> 6925 CANOGA AVENUE ■ CANOGA PARK, CA 91303 0 818 587-5550 0 FAX 818 587-5555 <br />