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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 Spikeo R1 C RPD <br /> Analyte Result Result Qualifier Units Level %REC L'Mts RPD Limit <br /> Batch W8130377 FPA 3005A <br /> LCS(W8B0377-6611 Prared:02/11/08 Analyzed_02/1_4/08 <br /> Sodium,Dissolved........................... 51.5 mg/1 50.0 103 85-115 <br /> Calcium,Dissolved.......................... 50.3 mg/1 50.0 101 85-115 <br /> Potassium,Dissolved....................... 60.8 mg/1 50.0 122 75-125 <br /> Magnesium,Dissolved..................... 50.8 mg/1 50.0 102 85-115 <br /> Matrix Spike_(W8B0377-MSI) Source:8020860-01 _Prepared:02/11/08 Analyzed:02/1.4/08 <br /> Sodium,Dissolved... ....84.1 134 mg/l 50.0 100 70-130 <br /> Calcium,Dissolved.. 70.9 119 mg/1 50.0 95 70-130 <br /> Potassium,Dissolved.......................0.777 61.3 mg/1 50.0 121 70-130 <br /> Magnesium,Dissolved....................64.6 114 mg/1 50.0 98 70-130 <br /> Matrix S Ike-- - ).-_-_--_Du p _8B0377-MSDl ..__ Source:8020860-01 Prwared_02/11/0$ Malyzed:,02/14/08 <br /> — - - <br /> Sodium,Dissolved...........................84.1 136 mg/1 50.0 103 70-130 1 20 <br /> Calcium,Dissolved.........................70.9 123 mg/1 50.0 104 70-130 4 20 <br /> Potassium,Dissolved.......................0.777 61.7 mg/1 50.0 122 70-130 0.7 20 <br /> Magnesium,Dissolved....................64.6 118 mg/1 50.0 106 70-130 4 20 <br /> Week Laboratories, Inc <br /> Organophosphorus Pesticides by EPA Method 8141A-Quality Control <br /> Sample QC Spike o/o C RPD <br /> Analyte Result Result Qualifier Units Level "/DREG L�n�itts RPD Limit <br /> Batch W00505 FPA 3520B <br /> BlankfW8B0505-L5 .__. _ __.__.___.._.__ __.___.__-.--Pared_02/13/08_Analyzed:02/22/08 <br /> Surrogate:Triphenyl phosphate 1.23 ug/1 1.00 123 6-173 <br /> Azinphos methyl(Guthion).............. ND ug/1 <br /> Bolstar.............................................. ND ug/l <br /> Chlorpyrifos..................................... ND ug/l <br /> Coumaphos...................................... ND ug/1 <br /> Demeton-o....................................... ND ug/l <br /> Demeton-s........................................ ND ug/1 <br /> Diazinon........................................... ND ug/1 <br /> Dichlorvos....................................... ND ug/l <br /> Disulfoton........................................ ND ug/1 <br /> Ethoprop.......................................... ND ug/1 <br /> Fensulfothion................................... ND ug/1 <br /> Fenthion........................................... ND ug/1 <br /> Mer-phos........................................... ND ug/l <br /> Methyl parathion.............................. ND ug/1 �+ <br /> Lab#:8020858 Page 4 of <br /> 14859 East Clark Avenue,City of Industry,California 91745-1396 (626)336-2139 FAX (626)336-2634 <br /> www.wecklabs.com <br />