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W nI L <br /> Weck Laboratories, Inc. <br /> Analytical Laboratory Services - Since 1964 <br /> Certificate of Analysis <br /> Week Laboratories, Inc <br /> Metals (Aqueous) by EPA 6000/7000 Series Methods-Quality Control <br /> Sample QC Spike �luRl C RPD <br /> Analyte Result Result Qualifier Units Level %REC amts RPD Limit <br /> Batch W00680-FPA 3005A <br /> US�W8B0680-BSI)_ _ _ _—.__.__ ---_. _.__._Prepared:02/19/08 Analyzed:02/20/08 <br /> Sodium,Dissolved........................... 49.7 mg/l 50.0 99 85-115 <br /> Calcium,Dissolved.......................... 49.1 ,ng/1 50.0 98 85-115 <br /> Potassium,Dissolved....................... 59.0 mg/1 50.0 118 75-125 <br /> Magnesium,Dissolved..................... 51.8 mg/I 50.0 104 85-115 <br /> Matrix Spike(W8B0680-MSI) _ _ __ Source:8020682-01 Prepared:02/19/_08_Analvzed:02_/20/08 <br /> Sodium,Dissolved................ 44.1 94.4 mg/1 50.0 101 70-130 <br /> Calcium,Dissolved..........................140 185 mg/1 50.0 90 70-130 <br /> Potassium,Dissolved.......................3 78 62.9 mg/1 50.0 118 70-130 <br /> Magnesium,Dissolved....................624 112 mg/1 50.0 too 70-130 <br /> Matrix.Spike Du W8B0680-M_SD1 Source:8020682-01 Prepared:_02/19/08 Analyzed:02/20/08 <br /> 1 — _ ) --- - ---- __._ <br /> Sodium,Dissolved...........................44.1 94.3 mg/1 50.0 100 70-130 0.09 20 <br /> Calcium,Dissolved..........................140 188 mg/1 50.0 96 70-130 1 20 <br /> Potassium,Dissolved.......................3.78 61.5 mg/1 50.0 115 70-130 2 20 <br /> Magnesium,Dissolved....................62.4 113 mg/1 50.0 101 70-130 0.7 20 <br /> Week Laboratories, Inc <br /> Organophosphorus Pesticides by EPA Method 8141A-Quality Control <br /> Sample QC Spike °oR>C RPD <br /> Analyte Result Result Qualifier Units Level %REC Limas RPD Limit <br /> Batch W8B0287 FPA 3520B - <br /> Blank,(W8B02877BLKI) . - Prepared:02/08/08 Analyzed_02/12/08 <br /> Surrogate:Triphenyl phosphate 0.887 ug/1 1.00 89 6-173 <br /> Azinphos methyl(Guthion).............. ND ug/1 <br /> Bolstar.............................................. ND ug/1 <br /> Clilorpyrifos..................................... ND ug/1 <br /> Coutnaphos...................................... ND ug/1 <br /> Demeton-o....................................... ND ug/1 <br /> Demeton-s........................................ ND ug/1 <br /> Diazinon........................................... ND ug/l <br /> Dichlorvos....................................... ND ug/1 <br /> Disulfoton........................................ ND ug/1 <br /> Ethoprop.......................................... ND ug/1 <br /> Fensulfothion................................... ND ugil <br /> Fenthion........................................... ND ug/I <br /> Merphos........................................... ND ugn <br /> Methyl parathion.............................. ND ug/1 <br /> Lab#:8020685 Page 5 of35 <br /> 14859 East Clark Avenue, City of Industry,California 91745-1396 (626)336-2139 FAX (626)336-2634 <br /> wvvw.wecklabs.com <br />