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I COLUMBIA ANALYTICAL SERVICES,INC <br /> QA/QC Report <br /> Client Delta Environmental Consultants Service Request X0401098 <br /> Project Canteen Corp Date Extracted 11/23/2004 <br /> pie Matrix Water Date Analyzed 11/23/2004 <br /> IMatrix Spike/Duplicate Matrix Spike Summary <br /> Volatile Organic Compounds <br /> Sample Name Batch QC Units ug/L <br /> Lab Code X0401080-002 Basis NA <br /> IExtraction Method EPA 5030B Level Low <br /> Analysis Method 8260B Extraction Lot XWG0401209 <br /> Batch QCMS Batch QCDMS <br /> XWG0401209-1 XWG0401209-2 <br /> Sample Matrix Spike Duplicate Matrix Spike %Rec RPD <br /> Analyte Name Result Result Expected %Rec Result Expected %Rec Limits RPD Limit <br /> Methyl tert-Butyl Ether ND 112 100 112 11 0 100 110 53-145 1 30 <br /> Benzene ND 117 100 117 113 too 113 79-133 3 10 <br /> 1,2-Dtchloroethane ND 117 100 117 114 100 114 62-136 2 15 <br /> Toluene ND 118 100 118 116 100 116 70-144 2 10 <br /> 1,2-Dibromoethane ND 113 100 113 110 too 110 75-115 3 15 <br /> Ethylbenzene ND 120 100 120 114 too 114 73-151 5 I0 <br /> m,p-Xylenes ND 228 200 114 222 200 111 84-137 3 10 <br /> o-Xylene ND 11 1 100 111 108 100 108 82-128 3 10 <br /> OARyl <br /> yl Alcohol ND 120 100 120 123 100 123 50-150 2 30 <br /> opyl Ether ND l 1 5 too 115 114 100 114 65-141 0 30 <br /> I Methyl Ether ND 114 100 114 110 100 110 50-150 4 30 <br /> tert-Butyl Ethyl Ether ND 113 100 113 11 1 100 111 50-150 3 30 <br /> I <br /> flagged with an asterisk{*)indicate values outside control criteria <br /> flagged with a pound(ft)indicate the control criteria is not applicable. <br /> Percent recoveries and relative percent differences(RPD)are determined by the software using values in the calculation which have not been rounded <br /> Printed 12/02/2004 14 13 27 Form 3A-Organic Page 1 of 1 <br /> L ISTFALTMCRYSTAL RP11Foim3DMS rpt SuperSet Reference RR5212 <br />