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`:� COLUMBIA ANALYTICAL SERVICES, INC. <br /> QA/QC Report <br /> i <br /> Client: /I RCO Products Contpanv Sen-ice Request: 59602027 � <br /> Project 2169 STOCKTON/421775-2344)02/TO#19350 00 Date Andhzed 12/4/96 <br /> Initial Calibration Verification(ICV) Summary <br /> STEX MTBE and TPH as Gasoline <br /> EPA Methods 503018020/CaIifornta DHS LUFT Method <br /> Units ppb <br /> CAS <br /> Percent <br /> Recovery <br /> True Percent Acceptance <br /> Anah it V.iluc Rewit RecoNery Limits <br /> Bcnzene 25 25 7 103 85-115 <br /> Toluene 2i 25 4 102 85-115 <br /> Eth�lbenzenc 25 268 107 85-115 <br /> Wencs Tol,il 74; 76 2 102 H5-115 <br /> Gasoline 250 246 98 90-110 <br /> 1vtcth%1 rc r-Blot 1_1ht-i 25 24 96 85-115 <br /> 1(,v25AL Oo4I04 <br /> Page 10 <br />