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i <br /> COLUMBIA ANALYTICAL SERVICES, INC. <br /> QA/QC Report <br /> Client: ARCO Products Cucnpuny <br /> Project; 21775-237.003fFO#19350.00/2186 STOCKTON Service Request: S9700533 <br /> Sample Matrix Wutct. Date Collected: 3/21/97 <br /> Date Received: 3124/97 <br /> Date Extracted: NA <br /> Date Analyzed: 4/1/97 <br /> Matrix Spike/Duplicate Matrix Spike Stunmary <br /> TPH as Gasoline <br /> Sample Name: MW-2(74)(DMS) <br /> Lab Code: S9700533-002MS, 59700533Units: ug/L(ppb) <br /> -002DMS <br /> Test Nates; Basis: NA <br /> Percent Recovery <br /> CAS Relative <br /> Prep Analysis Spike Level Sample Spike Result Acceptance Percent <br /> Analyte Method Method MRL MS DMS Result MS DMS MS DMS <br /> Limits Difference <br /> Gasoline 5030 California DHS LUPT 50 250 250 ND <br /> 240 230 96 92 75-135 4 <br /> DMS[0203971) <br /> 9700533.xLS.D%fNva,4,707 Page I I <br /> Page No.: <br />