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t <br /> Weck Laboratories, IncrV . <br /> Analytical Laboratory Services- Since 1964 <br /> Certificate of Analysis <br /> Week Laboratories, IIIc <br /> Metals(Aqueous)by EPA 6000/7000 Series Methods-Quality Control <br /> Sample QC SpikeRPD <br /> o/aimrtC <br /> Analyte Result Result Qualifier Units Level %REC s RPD Limit <br /> Batch W8110680-FPA 3005A _— <br /> LC"W8B0680-BS1 _ ---_ .......... _ _ _ _ _ _: _ _ Prepared:02/19/08 Analyzed:02/20/08--___ <br /> Calcium............................................ 49.1 mg/l 50.0 98 75-125 <br /> Potassium......................................... 59.0 mg/l 50.0 118 75-125 <br /> Magnesium....................................... 51.8 mg/l 50.0 104 75-125 <br /> Sodium............................................. 49.7 mg/1 50.0 99 75-125 <br /> Matrix Spike 8B0680-MSI) Source:8020682-01 PreDared:02/1.9/08._Ana3zed:02/20/08 <br /> Calcium............................................140 185 mg/l 50.0 90 75-125 <br /> Potassium........................................3.78 62.9 mg/l 50.0 118 75-125 <br /> Magnesium......................................62.4 112 mg/l 50.0 100 75-125 <br /> Sodium................................. .....44.1 94.4 mg/1 50.0 101 75-125 <br /> Matrix.S keke,DuF(W8B0680-MS_D_IJ Source:8020682-01 Prepared:02/19/08_.Anal vzed:02/20/08.______._____ <br /> Calcium............................................140 188 mg/l 50.0 96 75-125 1 20 <br /> Potassium........................................3.78 61.5 mg/l 50.0 115 75-125 2 20 <br /> Magnesium......................................62.4 113 mg/l 50.0 101 75-125 0.7 20 <br /> Sodium............................................44.1 94.3 mg/l 50.0 100 75-125 0.09 20 <br /> i <br /> Lab#:8020682 Page 3 of27 <br /> 14859 East Clark Avenue,City of Industry,California 91745-1396 (626)336-2139 FAX (626)336-2634 <br /> www.wecklabs.com <br />