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W ® • <br /> will L Weck Laboratories, Inc. <br /> }} Analytical laboratory Services - Since 1964 <br /> J <br /> r <br /> Certificate of Analysis <br /> Week Laboratories, Inc <br /> Conventional Chemistry/Physical Parameters by APHA/EPA/ASTM Methods-Quality Control <br /> Sample QC Spike -.REC RPD <br /> Analyte Result Result Qualifier Units Level %REC LIMItS RPD Limit <br /> Batch W7I0411 -EPA 3050B <br /> Duplicate(W7I0411-DUPl) Source:7090567-03 Prepared:09/11/07 Analyzed:09/12/07 <br /> %Solids..........................................77.2 75.9 %by Weight 2 20 <br /> Week Laboratories, Inc <br /> Metals (Non-Aqueous)by EPA 6000/7000 Series Methods-Quality Control <br /> Sample QC SpikeoLRuR$C RPD <br /> Analyte Result Result Qualifier Units Level %REC amts RPD Limit <br /> Batch W710167-EPA 7471 A <br /> Blank(W7I0167-BLKl) Prepared:09/06/07 Analyzed:09/11/07 <br /> Mercury,Total................................. ND mg/kg wet <br /> CS(VV7I0167-BS1) Prepared:09/06/07 Analyzed:09/11/07 <br /> Mercury,Total................................. 0.0839 mg/kg wet 0.0820 102 80-120 <br /> Matrix Spike 7I0167-MSI) Source:7083105-01 Prepared:09/06/07 Analyzed:09/11/07 <br /> Mercury,Total................................0.443 0.574 mg/kg dry 0.0939 140 70-130 <br /> Matrix Spike Dup 037710167-MSM) Source:7083105-01 Prepared:09/06/07 Analyzed:09/11/07 <br /> Mercury,Total................................0.443 0.567 mg/kg dry 0.0939 132 70-130 1 25 <br /> Lab#:7083104 Page 2 of 3 <br /> 14859 East Clark Avenue,City of Industry,California 91745-1396 (626)336-2139 FAX (626)336-2634 <br /> www.wecklabs.com <br />