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www.emdab.com Helena, MT 577472-0711 • Billings, W 800-7354489 • Casper, WY 888435-6515 <br /> ??t Gillette, WY 866-686-7175 • Rapid City, SO 886-672-1225 • College Station, TX 888-690-2218 <br /> <br /> LABORATORY ANALYTICAL REPORT <br /> Revised Date: 11/23/10 <br />Client: Cotter Corporation Report Date: 11/12/10 <br />Project: Schwartzwalder Water Monitoring Program Discharge Collection Date: 10/12/10 <br />Lab ID: C10100590-001 DateReceived: 10/14/10 <br />Client Sample ID: DIS-001A (S25269) Matrix: Aqueous <br /> MCL/ <br />Analyses Result Units Qualifiers RL QCL Method Analysis Date / By <br />MAJOR IONS <br />Chloride 28 mg/L 3 E300.0 10/26/10 19:07 / Ijl <br />Fluoride 0.3 mg/L 0.1 A4500-F C 10/15/10 10:51 / jba <br />Sulfate 744 mg/L 5 E300.0 10/28/10 20:36 / Ijl <br />NON-METALS <br />Cyanide, Weak Acid Dissociable ND mg/L 0.002 D2036 10/19/10 15:01 / eli-b <br />Sulfide ND mg/L 5 A4500-S F 10/18/10 14:39 / jba <br />PHYSICAL PROPERTIES <br />Oxygen Demand, Chemical (COD) 23 mg/L 5 HACH 8000 10/15/10 11:57 / jba <br />Solids, Total Dissolved TDS @ 180 C 1330 mg/L 10 A2540 C 10/15/10 15:54 / Ir <br />Solids, Total Suspended TSS @ 105 C ND mg/L 4 A2540 D 10/15/10 16:13 / Ir <br />METALS - DISSOLVED <br />Chromium ND mg/L 0.01 E200.8 10/19/10 18:24 / sml <br />Chromium, Hexavalent ND mg/L H 0.01 A3500 Cr-B 10/15/10 14:10 / jba <br />Chromium, Trivalent ND mg/L 0.01 Calculation 10/23/10 15:44 / sec <br />Iron ND mg/L 0.03 E200.8 10/19/10 18:24 / smI <br />Manganese ND mg/L 0.005 E200.8 10/19/10 04:31 / smI <br />- The sample was received past the EPA-recommended holding time for Hexavalent Chro mium analysis. <br />METALS-TOTAL <br />Antimony ND mg/L 0.001 E200.8 11/05/10 23:34 / sml <br />Arsenic 0.0018 mg/L B 0.0005 E200.8 11/02/10 22:05 / sml <br />Boron ND mg/L 0.1 E200.8 11/02/10 22:05 / sml <br />Iron ND mg/L 0.03 E200.8 11/02/10 22:05 / sml <br />Mercury ND mg/L 0.0001 E245.1 10/26/10 15:40 / rdw <br />Thallium ND mg/L 0.0002 E200.8 11/02/10 22:05 / sml <br />Uranium ND mg/L 0.0002 E200.8 11/05/10 23:34 / sml <br />METALS - POTENTIALLY DISSOLVED <br />Arsenic ND mg/L D 0.0008 E200.8 10/19/10 05:17 / sml <br />Cadmium ND mg/L 0.01 E200.8 10/19/10 05:17 / sml <br />Copper 0.002 mg/L 0.001 E200.8 10/19/10 05:17 / smI <br />Nickel ND mg/L 0.05 E200.8 10/19/10 05:17 / smI <br />Selenium 0.001 mg/L 0.001 E200.8 10/19/10 05:17 / sml <br />Silver ND mg/L D 0.0002 E200.8 10/19/10 05:17 / sml <br />Uranium ND mg/L 0.0002 E200.8 10/19/10 05:17 / sml <br />Zinc 0.024 mg/L 0.005 E200.8 10/19/10 05:17 / sml <br />Report RL - Analyte reporting limit. MCL - Maximum contaminant level. <br />Definitions: QCL - Quality control limit. ND - Not detected at the reporting limit . <br />B - The analyte was detected in the met hod blank. D - RL increased due to sample matrix . <br />H - Analysis performed past recommended holding time. <br />Page 3 of 22