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COLUMBIA ANALYTICAL SERVICES,INC <br /> QA/QC Report <br /> Client- Applied Earth Sciences, Incorporated Service Request X0400795 <br /> Project Canteen Corp/AGE-NC-99-0612 Date Extracted 09/13/2004 <br /> Wple Matrix Water Matrix S Date Analyzed 09/13/2004 <br /> Spike/Duplicate licate Matrix Spike Summar <br /> P P A J' <br /> Volatile Organic Compounds <br /> Sample Name Batch QC Units ug/L <br /> Lab Code X0400826-010 Basis NA <br /> Extraction Method EPA 5030B Level Low <br /> Analysis Method 8260B Extraction Lot XWG0400980 <br /> I Batch QCMS Batch QCDMS <br /> XWG0400980-1 XWG0400980-2 <br /> Sample Matrix Spike Duplicate Matrix Spike %Rec RPD <br /> IAnalyte Name Result Result Expected "/oRec Result Expected %Rec Limits RPD Limit <br /> Methyl tert-Butyl Ether ND 106 100 106 102 100 102 53-145 4 30 <br /> Benzene ND 963 100 96 936 100 94 79-133 3 10 <br /> 1,2-Dichloroethane ND 953 100 95 963 100 96 62-136 1 15 <br /> Toluene 036 944 100 91 943 100 91 70-144 0 10 <br /> 1,2-Dibromoethane ND 901 100 90 859 100 86 75-115 5 15 <br /> Ethylbenzene ND 108 100 108 106 100 106 73-151 2 I0 <br /> m,p-Xylenes ND 190 200 95 186 200 93 84-137 2 10 <br /> o-Xylene ND 918 100 92 925 100 93 82-128 1 10 <br /> rt-Butyl Alcohol ND 946 100 95 988 100 99 50-150 4 30 <br /> sopropyl Ether ND 11 1 100 111 105 100 105 65-141 5 30 <br /> rt-Amyl Methyl Ether ND 11 1 100 111 106 100 106 50-150 5 30 <br /> tert-Butyl Ethyl Ether ND 114 100 114 107 100 107 50-150 7 30 <br /> I <br /> I <br /> Its flagged vnth an asterisk(")indicate values outside control criteria. <br /> Its flagged with a pound(i)Indicate the control criteria is not applicable <br /> Percent recoveries and relative percent differences(RPT])are deterromed by the software uautg values to the calculation which have not beets rounded <br /> Printed 09/20/2004 11 51 51 Farm 3A-Organic Page I Of 1 <br /> 116 <br /> L 1STEALI'MCRYSTAL RPT\Fomt3DM3 rpt Super-Set Reference RR4937 <br />