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COLUMBIA ANALYTICAL SERVICES,INC. <br /> • QA/QC Report <br /> Client: EMCON Service Request: L9504080 <br /> Protect: ARCO Products Companv#760/#1775-212 001 Date Collected- NA <br /> Sample Matrix. Water Date Received: NA <br /> Date Extracted: 11/27/95 <br /> Date Analyzed: 11/27/95 <br /> Matnx Spike/Duplicate Matrix Spike Summary <br /> Total Petroleum Hydrocarbons (TPH) <br /> SM5520 B/F <br /> Units mg/L(ppm) <br /> Sample Name BATCH QC <br /> Lab Code L9504111-003 004 <br /> Percent Recovery <br /> CAS Relative <br /> Spnkc Lciel Sample Spike Result Acceptance Percent <br /> Anaivte MS DMS Result MS DMS MS DMS Lututs Difference <br /> TPH 249 245 ND 218 21 9 88 89 45-155 <1 <br /> lie <br /> 0 <br /> Approved By Date <br /> Dresisr120594 <br /> Page 14 <br />