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' COLUMBIA ANALYTICAL SERVICES,INC <br /> QA/QC Report <br />' Cllellt Applied Earth Sciences, Inc Service Request* X2400480 <br /> PrOICLt Canteen Corp Date Extracted 05/21/2004 <br /> ple Matrix Water Date Analyzed 05/21/2004 <br />' Lab Control Spike/Duplicate Lab Control Spike Summary <br /> Volatile Organic Compounds <br />' Extraction Method EPA 5030B Units ug/L <br /> Analysis Method 8260E Basis NA <br /> Level: Low <br /> Extraction Lot. XWCT0400584 <br /> Lab Control Sample Duplicate Lab Control Sample <br />' XWG0400584-3 XWG0400584-4 <br /> Lab Control Spike Duplicate Lab Control Spike %Rec RPD <br /> Analyte Name Result Expected %Rec Result Expected %Rec Limits RPD Limit <br /> Methyl tort-Butyl Ether 941 10 0 94 102 100 102 72-119 8 30 <br /> Benzene 105 IO 0 105 107 100 107 78-120 2 10 <br /> 1,2-Dichloroethane 860 10 0 86 846 100 85 68-128 2 15 <br />' Toluene 106 10 0 106 114 10 0 114 77-125 8 10 <br /> 1,2-Dibromoethane 9 37 10 0 94 954 10 0 95 76-113 2 15 <br /> Ethylbenzene 112 too 112 118 100 118 81-124 5 10 <br /> 1-fi,p-Xylenes 214 20 0 107 21 1 200 105 83-123 2 10 <br /> o-Xylene 101 100 101 11 1 100 ill 82-116 10 10 <br /> tert-Butyl Alcohol 837 100 84 861 100 86 56-135 3 20 <br /> Diisopropyt Ether 104 10 0 104 105 10 0 105 71-125 1 30 <br /> Amyl Methyl Ether 936 10 0 94 954 100 95 71-120 2 20 <br /> -Butyl Ethyl Ether 101 10 0 101 103 100 103 69-119 3 20 <br /> I <br /> I <br /> I <br /> I <br /> I <br /> 0Its flagged with an asterisk(1)indicate values outside control criteria <br /> coni recoveries and relative percent differences(RPD)are detemuned by the software using values to the calculation Much have not been rounded <br />` Printed 05/29/2004 09 38 38 Form 3C-Organic Page 1 of 1 <br /> IL 1STCAL-171MRysTAL RPT4cbrrn3DLC rpt SuperSet Reference RR4622 <br />