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h <br /> COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> 10 Client: Arco Product Company Service Request: S9501453 <br /> Project: 1775-212 00l/T0#17075 00/2076 Lodi Date Collected: 11/15/95 <br /> Sample Matrix: Water Date Received: 11/16/95 <br /> Date Extracted: NA <br /> Date Analyzed: 11/29/95 <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> BTE <br /> EPA Methods 5030/8020 <br /> Units ug/L (ppb) <br /> Sample Name Batch QC Sample <br /> Lab Code 59501463-002 <br /> Percent Recovery <br /> CAS Relative <br /> Spike Level Sample Spike Result Acceptance Percent <br /> Analyte MS DMS Result MS DMS MS DMS Limits Difference <br /> Benzene 25 25 ND 26 26 104 103 75-135 1 <br /> Toluene 25 25 ND 26 26 104 104 73-136 1 <br /> Ethvlbenzene 25 25 ND 26 26 104 103 69-142 2 <br /> or,IsiSM0194 <br /> Page 7 <br />