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ICOLUMBIA ANALYTICAL SERVICES,INC <br /> QA/QC Report <br /> Client Delta Environmental Consultants Service Request X0500292 <br /> IProject Canteen Corp Date Extracted 03/24/2005 <br /> We Matrix Water Date Analyzed 03/24/2005 <br /> I <br /> I <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> Volatile Organic Compounds <br /> ISample Name MW 13A Units ug/L <br /> Lab Code X0500292-006 Basis NA <br /> Extraction Method EPA 5030B Level Low <br /> Analysis Method 8260B Extraction Lot XWG0500336 <br /> MW 13AMS MW 13ADMS <br /> XWG0500336-1 XWG0500336-2 <br /> Sample Matrix Spike Duplicate Matrix Spike %Rec RPD <br /> r <br /> IAnalyte Name Result Result Expected %Rec Result Expected %Ree Limits RPD Limit <br /> Methyl tert-Butyl Ether ND 104 100 I04 109 100 109 57-126 4 14 <br /> IBenzene ND 116 100 116 112 100 112 78-121 4 17 <br /> 1,2-Dichloroethane ND 110 100 110 114 100 114 70-118 3 13 <br /> Toluene ND 119 100 119 117 too 117 76-120 1 15 <br /> 1,2-Dibromoethane ND 932 100 93 965 loo 97 73-105 4 19 <br /> Ethylbenzene ND 122 100 122 * 116 100 116 79-118 5 16 <br /> 11 m,p-Xylenes ND 223 200 112 214 200 107 75-113 4 16 <br /> o-Xylene ND 118 100 118 * 115 100 115 * 74-108 3 15 <br /> �utyl Alcohol ND 937 100 94 101 100 101 50-150 7 20 <br /> opropyl Ether ND 110 100 110 109 100 109 50-150 1 30 <br /> tert-Amyl Methyl Ether ND 959 100 96 102 100 102 50-150 6 20 <br /> ter -Butyl Ethyl Ether ND 103 100 103 105 100 105 50-150 2 20 <br /> I <br /> Its flagged with an asterisk(*)indicate values outside control criteria <br /> Results 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 /> IPrinted 03/30/2005 14 33 58 Form 3A-Organic Superset Reference RR5512 Page 1 of I <br /> L 1STEALTHICRYSTAL RPrFonn3DMS rpt <br /> 15 - <br />