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LWeck Laboratories, Inc, <br /> Analytical Laboratory Services-Since 1964 <br /> Certificate of Analysis <br /> Weck Laboratories,Inc <br /> Metals(Aqueous)by EPA 6000/7000 Series Methods-Quality Control <br /> Sample QC Spike <br /> Analyte Result Result Qualifier o/oREC RPD <br /> — Units Level -%REC Limits RPD Limit <br /> Batch W8H0036-EPA 3005A <br /> Prepared:08/01/08 /08 <br /> Sodium,Dissolved.................................. 50.6 mg/l 51.0 99 85-115 <br /> Calcium,Dissolved................................. 50.7 mg/1 51.0 99 85-115 <br /> Potassium,Dissolved.............................. 61.0 mg/1 60.0 102 75-125 <br /> Magnesium,Dissolved........................... 52.7 mg/l 50.0 105 85-115 <br /> N,atrix ike -- Source:8073123-01 Prepared:08/01/08 Analyzed:08/08/08 <br /> Sodium,Dissolved..................................168 220 mg/l 51.0 100 70-130 <br /> Calcium,Dissolved................................402 448 mg/l 51.0 90 70-130 <br /> Potassium,Dissolved..............................7.71 70.7 mg/l 60.0 105 70-130 <br /> Magnesium,Dissolved...........................120 173 mg/l 50.0 105 70-130 <br /> Matrix ��u (W8H0036-MSD1) Source:8073123-01 Prepared:08/01/08 Anal yzed:08/08/08 <br /> --hr—S"i eD <br /> Sodium,Dissolved..................................168 222 mg/1 51.0 104 70-130 0.9 20 <br /> Calcium,Dissolved................................402 457 mg/l 51.0 107 70-130 2 20 <br /> Potassium,Dissolved.............................?.71 70.0 -91`1 60.0 104 70-130 1 20 <br /> Magnesium,Dissolved...........................120 174 mg/l 50.0 107 70-130 0.5 20 <br /> Lab#:8080101 14859 East Clark Avenue,City of Industry,California 91745-1396 (626)336-2139 FAX (626)336-2634 Page 4 of 5 39 <br /> www.wecklabs.com <br />