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Weck Laboratories,. Inc. <br /> Analytical Labbratgry Services-Since 2964 <br /> Certificate of Analysis <br /> Week Laboratories,Inc <br /> Metals(Aqueous)by EPA 6000/7000 Series Methods-Quality Control <br /> Sample QC Spike %REC RPD <br /> Analyte Result Result Qualifier Units Level %gEC Limits RPD Limit <br /> Batch W8110100-EPA 3005A <br /> Blank 8H0100-BLKt Prepared_08/04/08 Analyzed:08/08/08 <br /> Calcium,Dissolved................................. 0.0105 1 mg/l <br /> Potassium,Dissolved.............................. ND mg/l <br /> Magnesium,Dissolved........................... ND mg/l <br /> LCS(WSHO100-BS1) —- PreRr d:08/04/08 Anally_ _08/08/08 <br /> --- -- ._- <br /> Sodium,Dissolved.... ......... ......... 50.7 mg/l 51.0 99 85-115 <br /> Calcium,Dissolved................................. 50.8 mg/l 51.0 100 85-115 <br /> Potassium,Dissolved.............................. 60.4 mg/l 60.0 101 75-125 <br /> Magnesium,Dissolved........................... 54.3 mg/l 50.0 109 85-115 <br /> Matrix Spike(WSHO100 MSI) Source:8080201-01 <br /> Prepared:08/04/08 Anal zed:08/08/08 <br /> ----- --- <br /> Sodium,Dissolved..................................11.3 62.8 mg/l 51.0 101 70-130 <br /> Calcium,Dissolved.................................19.0 70.5 mg/l 51.0 101 70-130 <br /> Potassium,Dissolved.............................2.99 63.8 mg/l 60.0 101 70-130 <br /> Magnesium,Dissolved...........................10.6 65.2 mg/l 50.0 109 70-130 <br /> Matrix Spike Dup(W8H0100-MSDI) Source:8080201-01 _ Prepared:08/04/08 Analyzed:08/08/08 <br /> Sodium,Dissolved..................................11.3 60.9 mg/l 51.0 97 70-130 3 20 <br /> Calcium,Dissolved.................................19.0 68.6 uig/I 51.0 97 70-130 3 20 <br /> Potassium,Dissolved.............................2.99 62.1 mg/l 60.0 98 70-130 3 20 <br /> Magnesium,Dissolved...........................10.6 63.3 mg/l 50.0 105 70-130 3 20 <br /> Lab#:8080201 Page 3 of 4 36 <br /> 14859 East Clark Avenue,City of Industry,California 91745-1396 (626)336-2139 FAX (626)336-2634 <br /> www.wecklabs.com <br />