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COLUMBIA ANALYTICAL SERVICES. INC. <br /> OA OC Report <br /> Client: EMCON Associates Date Received: 12/22x93 <br />• Project- EMCON Project No. OG71-033.01 Service Request No.: SJ93-1565 <br /> ARCO Facility No. 548 Sample Nlatrix: Water <br /> Matrix SpikeiDupiicate Matrix Spike Summary <br /> BTE <br /> EPA Methods 5030/8020 <br />. Erq/L (ppb) <br /> Date Analyzed: 12/27/93 <br /> P e r c e n t R e c a v e r y <br /> Spike CAS <br /> Spike Sample Result Acceptance <br /> Analyte Level Result MS DMS MS DMS Criteria <br /> Benzene 25, 4.1 28.8 28.4 v9. 97. 76-122 <br /> Toluene 25. 4.5 28.8 28.4 ?7. 96. 75-127 <br /> EthVibenzene 25. ND 23.8 23.5 c5. 94. 70-135 <br /> Approved by: �Q _. ., .... (�D� Date: 1 - 3 - yel <br /> it <br />