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I COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client I Applied Earth Sciences, Inc Service-Request X2400480-Project Canteen Corp Date Extracted 05/19/2004 <br /> mpie Matrix Water Date Analyzed 05/19/2004 <br /> IMatrix Spike/Duplicate Matrix Spike Summary <br /> Volatile Organic Compounds <br /> ISample Name MW 13A Units ug/L <br /> Lab Code X2400480-006 Basis NA <br /> Extraction Method EPA 5030B Level Low <br /> Analysis Method 8260B Extraction Lot XWG0400568 <br /> I MW 13AMS MW 13ADMS <br /> XWG0400568-6 XWG0400568-7 <br /> Sample Matrix Spike Duplicate Matrix Spike <br /> %Rec RPD <br /> Analyte Name Result Result Expected %Rec Result Expected %Rec Limits RPD Limit <br /> Methyl tert-Butyl Ether ND 104 100 104 975 100 98 53-145 6 30 <br /> Benzene 5 7 162 100 106 157 100 100 79-133 4 10 <br /> 1,2-Dichloroethane ND 978 100 98 933 100 93 62-136 5 15 <br /> Toluene 22 118 100 96 10 9 100 87 70-144 8 10 <br /> 1,2-Dibronioethane ND 788 100 79 761 100 76 75-115 3 15 <br />' Ethylbenzene 0 75 I 1 4 100 106 11 1 100 103 73-151 3 10 <br /> m,p-Xylenes 2 1 225 200 IO2 226 200 102 84-137 1 10 <br /> o-Xylene 1 3 112 100 99 110 100 96 82-128 2 10 <br /> tert-Butyl Alcohol ND 104 100 104 904 100 90 50-150 14 30 <br /> *sopropyl Ether ND 926 100 93 872 100 87 65-141 6 30 <br /> -Amyl Methyl Ether 038 9 34 100 90 931 100 89 50-150 0 30 <br /> tert-Butyl Ethyl Ether ND 932 100 93 9 05 too 91 50-150 3 30 <br /> I <br /> I <br /> I <br /> Its(lagged with an asterisk(`)indicate values outside control criteria <br /> alts flagged with a pound(#)indicate the control criteria is not applicable <br /> Percent recovencs and relative percent differences(RPD)are deter caned by the software using values in the calculation which have not been rounded <br /> Printed 05/29/2004 011107 Form 3A-Organic Page 1 of 1 <br /> I RPT1Far <br /> L 1SSuperSet Reference RR4622 <br /> "rEAI..'rH1CRYSTAI, m3DMS rpt <br />