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t <br /> M Weck Laboratories, Inc. <br /> Analytical Laboratory Services - Since 1964 <br /> Certificate of Analysis <br /> Week Laboratories,Inc <br /> Organophosphorus Pesticiues by EPA Ntethoti 80144 IA' -Quality Control <br /> Sample QC Spikeo//o C RPD <br /> Analvte Result Result Qualifier Units Level %REC i,im, RPD Limit <br /> Batch W8BO505-FPA 3520E <br /> 1 Blank(W8B0505-BLK1) _ ___ Prepared:02/13/08 Analyzed:02/22/08 <br /> Mevinphos.. .................................. ND ug/l <br /> Naled..:............................................. ND ug/l <br /> Phorate............................. ............... ND ug/l <br /> Ronnel.............................................. ND ug/1 <br /> Stirophos.......................................... ND ug1 <br /> Tokuthion(Prothiofos).................... ND ug/l <br /> Trichloronate................................... ND ug/l <br /> LCS_(WSB0505..-BS_1) _ _ Prepared_02/13/08 Analyzed:02/22/08 <br /> Surrogate:Triphenyl phosphate 1.28 ug/1 1.00 128 6-173 <br /> Azinphos methyl (Guthion).............. 1.33 ug/1 1.00 133 18-159 <br /> Bolstar............................................. 1:10 ugtl 1.00 110 49-148 <br /> I Chlorpyrifos..................................... 1.28 ug/l 1.00 128 49-143 <br /> Coumaphos...................................... 1.30 ug/l 1.00 130 42-161 <br /> Demeton-o....................................... 0.844 ug/l 1.00 84 47-132 <br /> Demeton-s........................................ 1.01 ug/1 1.00 101 45-147 <br /> Diazinon........................................... 0.969 ug/l 1.00 97 46-136 <br /> Dichlorvos....................................... 1.11 ug/l 1.00 IN 1 29-164 <br /> Disulfoton........................................ 1.02 ug/1 1.00 102 46-155 <br /> Ethoprop.......................................... 0.959 ug/1 1.00 96 54-141 <br /> Fensulfothion................................... 1.37 ug/1 1.00 137 54-167 <br /> Fenthion........................................... 1.06 ug/1 1.00 106 50-143 <br /> Merphos........................................... 1.12 ug/l 1.00 112 40-185 <br /> Methyl parathion.............................. 1.03 ug/l 1.00 103 47-142 <br /> Mevinphos....................................... 1.05 ug/l 1.00 105 43-145 <br /> Naled................................................ 0.861 ug/l 1.00 86 16-177 <br /> Phorate............................................. 0.984 ug/1 1.00 98 56-134 <br /> Ronnel.............................................. 1.14 ug/l 1.00 114 49-140 <br /> Stirophos.......................................... 1.08 ug/l 1.00 108 46-146 <br /> Tokuthion(Prothiofos).................... 1.08 ug/l 1.00 108 52-139 <br /> Trichloronate................................... 1.12 ug/1 1.00 112 52-136 <br /> LCS Dup(W8B0505-B_SD_1) __ _ __ _ Prepared_02/13/08.f1nalyzed:02/22/08__ _ <br /> Surrogate:Triphenyl phosphate 1.19 ug/l 1.00 119 6-173 <br /> ' Azinphos methyl (Guthion)............. 1.30 ug/1 1.00 130 18-159 2 25 <br /> Bolstar....:........................................ 1.12 ug/l 1.00 112 49-148 1 25 <br /> Chlorpyrifos..................................... 1.36 ug/l 1.00 136 49-143 6 25 <br /> Coumaphos...................................... 1.28 ug/l 1.00 128 42-161 0.9 25 <br /> Demeton-o....................................... 1.01 ug/l 1.00 101 47-132 18 25 <br /> Demeton-s........................................ 1.08 ug/l 1.00 108 45-147 7 25 <br /> Diazinon........................................... 1.03 ug/l 1.00 103 46-136 6 25 <br /> Lab#:8020858 Page 5 o37 <br /> 14859 East Clark Avenue, City of Industry; California 91745-1396 (626)336-2139 FAX (626)336-2634 <br /> www.wecklabs.com <br />