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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> . Client ARCO Products Company Semce Request: 59501464 <br /> Project: 1775-700 001 /TO# 17075 00/414 Lodi Date Collected: 11/17/95 <br /> Sample Matrix Water Date Received: 11/18/95 <br /> Date Extracted: NA <br /> Date Analyzed: 11/30 12/1/95 <br /> Matrix Spike/Duplicate Maty Spike Sunuuary <br /> TPH as Gasoline <br /> EPA Methods 5030/Caltforrua DHS LUFT Method <br /> Units ug/L (ppb) <br /> Sample Name W-lA(77) <br /> Lab Code 595014644)01 <br /> Percent Recovery <br /> CAS Relative <br /> Spike Level S.smple Spike Result 4cceptance Percent <br /> Analvte MS DMS Result MS DMS MS DMS Limits Difference <br /> Gasoline 250 250 SID 210 240 96 96 67-121 <1 <br /> DMSISIOM194 <br /> Page 7 <br />