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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Wn, Delta Environmental Consultants Service Request- X0500292 <br /> et: Canteen Corp Date Extracted 03/25/2005 <br /> Sample Matrix: Water Date Analyzed 03/25/2005 <br /> Lab Control Spike/Duplicate Lab Control Spike Summary <br /> TPH as Gasoline(GRO) <br /> Extraction Method. EPA 5030B Units: ug/L <br /> Analysis Method: 8015 GRO Basis. NA <br /> Level: Low <br /> Extraction Lot XWG0500329 <br /> Lab Control Sample Duplicate Lab Control Sample <br /> XWG0500329-3 XWG0500329-4 <br /> Lab Control Spike Duplicate Lab Control Spike %Rec RPD <br /> Analyte Name Result Expected %Rec Result Expected . %Rec Limits RPD Limit <br /> C6-C10 GRO 1200 1000 120 1230 1000 123 78-123 3 14 <br /> Results flagged with an asterisk(*)Indicate values outside control criteria. <br /> Percent recovenes and relative percent differences(RPD)are determined by the software using values in the calculation which have not been rounded <br /> IPrinted 03/29/2005 14 11 22 Form 3C-Organic Page 1 of 1 <br /> 32,ISTEALTHICRYSTAL RPT1Form3DLC rpt Superset Reference RR5509 <br />