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` COLUMBIA ANALYTICAL SERVICES,INC <br /> IQA/QC Report <br /> Client Delta Environmental Consultants Service Request X0401098 <br /> I Project Canteen Corp Date Extracted 11/24/2004 <br /> ple Matrix Water Date Analyzed 11/24/2004 <br /> Matrix Spike Summary <br /> Volatile Organic Compounds <br /> ISample Name Batch QC Units uglL <br /> Lab Code X0401113-001 Basis NA <br /> IExtraction Method EPA 5030B Level Low <br /> Analysis Method: 8260B Extraction Lot XWG0401207 <br /> Batch QCMS <br /> XWG0401207-1 <br /> Sample Matrix Spike %Rec <br /> Analyte Name Result Result Expected %Rec Limits <br /> Methyl tert-Butyl Ether 084 107 100 98 53-145 <br /> Benzene ND 118 100 118 79-133 <br /> 1,2-Dichloroethane ND 117 100 117 62-136 <br /> Toluene ND 116 100 116 70-144 <br /> 1,2-Dibromoethane ND 103 100 103 75-115 <br /> Ethylbenzene ND 118 100 118 73-151 <br /> m,p-Xylenes ND 221 200 110 84-137 <br /> a-Xylene ND 110 100 110 82-128 <br /> Mutyl Alcohol 25 127 100 102 50-150 <br /> Mnopropyl Ether ND 1 I 3 100 113 65-141 <br /> tert-Amyl Methyl Ether ND 105 100 105 50-150 <br /> tert-Butyl Ethyl Ether ND 104 100 104 50-150 <br /> flagged with an asterisk(*)indicate values outside control criteria <br /> s flagged with a pound(#)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 24 Forth 3A-Organic Page 1 of I <br /> L 1S FEALTli1CRYSTAL$PT\Fo.3MS rpt SuperSet Reference RR5212 <br />