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www.enerdab.com ( Helena, MT 877-472-0711 Y Billings, MT 800-735-4489 a Casper, WY 888-235-0515 <br />Anarytical Excelrence Slece 1852 Gillette, WY 866-686-7175 • Rapid City, SD 888-672-1225 • College Station, TX 888-690-2218 <br />LABORATORY ANALYTICAL REPORT <br />Client: Cotter Corporation Report Date: 09/14/10 <br />Project: Schwartzwalder Water Monitoring Program Collection Date: 08/06/10 <br />Lab ID: C10080305-001 DateReceive d: 08/09/10 <br />Client Sample ID: Dis-001 A (S25263) Matrix: Aqueous <br /> MCL/ <br />Analyses Result Units Qualifiers RL OCL Method Analysis Date / By <br />MAJOR IONS <br />Chloride 402 mg/L 3 E300.0 08/23/10 13:22 / Ijl <br />Fluoride 0.4 mg/L 0.1 A4500-F C 08/11/10 14:25 / ja <br />Sulfate ND mg/L 5 E300.0 08/17/10 22:04 / Ijl <br />NON-METALS <br />Cyanide, Weak Acid Dissociable ND mg/L 0.005 D2036 08/12/10 13:53 / eli-b <br />PHYSICAL PROPERTIES <br />Oxygen Demand, Chemical (COD) 32 mg/L 5 HACH 8000 08/16/10 12:17 / ja <br />Solids, Total Dissolved TDS @ 180 C 1170 mg/L 10 A2540 C 08/10/10 16:45 / Ir <br />Solids, Total Suspended TSS @ 105 C ND mg/L 4 A2540 D 08/10/10 12:17 / ja <br />METALS - DISSOLVED <br />Chromium ND mg/L 0.05 E200.7 08/11/10 13:34 / cp <br />Chromium, Hexavalent ND mg/L H 0.01 A3500 Cr-B 08/17/10 12:54 / ja <br />Chromium, Trivalent ND mg/L 0.01 Calculation 08/23/10 11:40 / sec <br />Iron ND mg/L 0.03 E200.7 08/11/10 13:34 / cp <br />Manganese 0.04 mg/L 0.01 E200.7 08/11/10 13:34 / cp <br />- The sample was received past the EPA-recommended holding time for Hexavalent Chromium analysis. <br />METALS-TOTAL <br />Antimony ND mg/L 0.001 E200.8 08/18/10 19:31 / sml <br />Arsenic ND mg/L 0.1 E200.7 08/17/10 20:17 / cp <br />Boron ND mg/L 0.1 E200.7 08/17/10 20:17 / cp <br />Iron ND mg/L 0.03 E200.7 08/17/10 20:17 / cp <br />Mercury ND mg/L 0.0001 E245.1 08/11/10 13:31 / rdw <br />Thallium ND mg/L 0.001 E200.8 08/18/10 19:31 / sml <br />Uranium ND mg/L 0.0002 E200.8 08/18/10 19:31 / sml <br />METALS - POTENTIALLY DISSOLVED <br />Arsenic ND mg/L 0.1 E200.8 08/18/10 21:13 / sml <br />Cadmium ND mg/L 0.01 E200.8 08/18/10 21:13 / sml <br />Copper ND mg/L 0.005 E200.8 08/18/10 21:13 / sml <br />Nickel ND mg/L 0.05 E200.8 08/18/10 21:13 / sml <br />Selenium ND mg/L 0.001 E200.8 08/18/10 21:13 / sml <br />Silver ND mg/L 0.001 E200.8 08/18/10 21:13 / sml <br />Uranium ND mg/L 0.0002 E200.8 08/18/10 21:13 / sml <br />Zinc 0.086 mg/L 0.005 E200.8 08/18/10 21:13 / sml <br />RADIONUCLIDES - DISSOLVED <br />Radium 226 10 pCi/L E903.0 09/08/10 16:05 / trs <br />Radium 226 precision (±) 0.77 pCi/L E903.0 09/08/10 16:05 / trs <br />Radium 226 MDC 0.23 pCi/L E903.0 09/08/10 16:05 / trs <br />Report RL - Analyte reporting limit. MCL - Maximum contaminant level. <br />Definitions: (QCL - Quality control limit. ND - Not detected at the reporting limit . <br />MDC - Minimum detectable c oncentrati on H - Analysis performed past recommended holding time. <br />Page 3 of 21