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COLUMBIA ANALYTICAL SERVICES,INC <br /> QA/QC Report <br /> I Client Delta Environmental Consultants Service Request X0500292 <br /> ect Canteen Corp Date Extracted 03/24/2005 <br /> ple Matrix Water Date Analyzed 03/24/2005 <br /> I <br /> Lab Control Spike/Duplicate Lab Control Spike Summary <br /> IVolatile Organic Compounds <br /> Extraction Method EPA 5030B Units ug/L <br /> Analysis Method 8260B Basis- NA <br /> I Level Low <br /> Extraction Lot XWG0500336 <br /> Lab Control Sample Duplicate Lab Control Sample <br /> XWG0500336-3 XWG0500336-4 <br /> Lab Control Spike Duplicate Lab Control Spike %Rec RPD <br /> Analyte Name Result Expected %Rec Result Expected %Rec Limits RPD Limit <br /> Methyl tert-Butyl Ether 970 100 97 109 100 109 55-131 11 14 <br /> Benzene 103 100 103 117 100 117 * 80-116 12 17 <br /> 1,2-Dichloroethane 102 100 102 109 100 109 75-118 7 13 <br /> Toluene 107 100 107 121 100 121 * 77-115 12 15 <br /> 1,2-Dibromoethane 921 100 92 950 100 95 74-107 3 19 <br /> Ethylbenzene 108 10 0 108 109 100 109 75-120 1 16 <br /> 1 m,p-Xylenes 21 5 200 108 21 3 200 107 71-116 1 16 <br /> o-Xylene 107 10 0 107 10 9 100 109 * 74-107 2 15 <br /> tert-Butyl Alcohol 897 100 90 992 100 99 45-124 10 20 <br /> Wopropyl Ether 106 100 106 11 5 10 0 115 50-150 8 30 <br /> IAmyl Methyl Ether 969 100 97 10 3 100 103 61-126 6 20 <br /> tert-Butyl Ethyl Ether 9 82 100 98 10 7 100 t07 59-130 9 20 <br /> I <br /> Iinsults flagged with an asterisk{*)mdlcate values outside control criteria <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 34 01 Form 3C-Organic Page 1 of 1 <br /> L ISTEALTMCRYSTAL RP nFonn3DLC rpt Superset Reference RR5512 <br /> 16 <br />