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' COLUMBIA ANALYTICAL SERVICES,C S,INC. <br /> QA/QC Report <br /> Dent: EMCON Service Request: L952343 <br /> Protect: ARCO Products Company#21681#0805-146 04 Date Collected- NA <br /> Sample Matrix. Soil Date Received NA <br /> Date Extracted- NA <br />' Date Analyzed: 5/16195 <br /> Matrix Spike/Duplicate Matrix Spike Summary <br />' Total Lead <br /> Units mg/Kg(ppm) <br /> Sample Name Batch QC <br />' Lab Code L952305-001 <br /> Percent Recovery <br /> CAS Relative <br />' Spike Sample Spike Result Acceptance Percent <br /> Analyte MRL Level Result MS DMS MS DMS Limits Difference <br /> Lead 5 125 122 122 120 88 86 60-130 2 <br />' NA Not Applicable <br /> MRI. Method Reporting Limit <br />' ND None Detected at or above the method reporting linut <br /> Approved By Date: <br />' DMsismPU060194 <br /> L957317 XLs 6s^tWnu 7119193 <br /> ` Page No 12 <br /> 6925 CANOGA AVENUE CANOGA PARK, CA 91303 818 587-5550 FAX 818 587-5555 <br />