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' COLUMBIA ANALYTICAL SERVICES,INC <br /> QA/QC Report <br />' Client Applied Earth Sciences, Inc Service-Request X2400480 <br /> Project Canteen Corp Date Extracted 05/20/2004 <br /> 40"plc,Matrix Water Date Analyzed 05/20/2004 <br />' Matrix Spike/Du licate Matrix Spike Summar <br /> P P y <br /> Volatile Organic Compounds <br />' Sample Name MW I3B Units ug/L <br /> Lab Code X2400480-007 Bans NA <br />' Extraction Method EPA 5030B Level Low <br /> Analysis Method 8260E Extraction Lot XWG0400570 <br /> MW 13BMS MW 13BDMS <br /> XWG0400570-1 XWG0400570-2 <br /> Sample Matrix Spike Duplicate Matrix Spike %Rec RPD <br /> Analyte Name Result Result Expected %Rec Result Expected %Rec Limits RPD Limit <br /> Methyl tert-Butyl Ether ND 106 100 106 971 100 97 53-145 8 30 <br /> Benzene ND 109 100 109 11 1 100 111 79-133 1 10 <br /> 1,2-Dichloroethane ND 101 100 101 916 100 92 62-136 10 15 <br /> Toluene ND 118 100 118 113 100 113 70-144 4 10 <br /> 1,2-Dibromoethane ND 955 100 96 951 100 95 75-115 0 is <br /> Ethylbenzene ND 115 100 115 116 100 116 73-151 1 10 <br /> In,p-Xylenes ND 219 200 110 212 200 106 84-137 3 10 <br /> o-Xylene ND 106 100 106 996 100 100 82-128 6 10 <br /> -Butyl Alcohol ND 93 6 100 94 822 100 82 50-150 13 30 <br /> sopropyl Ether ND 113 100 113 11 1 100 111 65-141 2 30 <br /> rt-Amyl Methyl Ether ND 966 100 97 956 100 96 50-150 1 30 <br /> Cert-Butyl Ethyl Ether ND 112 100 112 987 100 99 50-150 12 30 <br /> I <br /> I <br /> I <br /> SISts(lagged with an asterisk(1)indicate values outside control criteria. <br /> I ts nagged with a pound(4)Indicate the control criteria is not applicable <br /> Percent recoveries and relative percent differences(RPD)are detemuned by the software using values in the calculation which have not been rounded <br /> IPrinted 05/29/2004 09 38 14 Form 3A-Organic Page 1 of 1 <br /> L 1STEALTMCRYSTAI,RPTSForm3DM3 rpt SuperSet Reference RR4622 <br />