2019-11-27_HYDROLOGY - M1977300 (6)

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AraZ Laboratories, Inc. 2773 Downhill Dnve Steamboat Springs, CO 80487(800)334-5493 Alexco Water& Environmental Inc. ACZ Sample ID: L50185-01 Project ID: Schwarzwalder Mine Date Sampled: 02126119 10:18 Sample ID: RAW FEED Date Received: 02/27/19 Sample Matrix: Groundwater Inorganic Prep Parameter EPA Method Dilution Result Qual XQ Units MDL PQL Date Analyst Cyanide,WAD SM4500-CN I-distillation 03/02/19 9:12 wtc Phosphorus,total M365.1 -Auto Ascorbic 03/04/19 13:16 mss2 Acid Digestion Total Hot Plate M200.2 ICP-MS 03/01/19 15.54 rap Digestion Total Hot Plate M200.2 ICP 03/05/19 12:00 rap Digestion Metals Analysis Parameter EPA Method Dilution Result Qual • Units MDLDate Analyst Aluminum,dissolved M200.7 ICP 1 U mg/L 0.03 0.2 03/01/19 1:50 dcm Aluminum,total M200 7 ICP 2 U mg/L 0.06 0.3 03/06/19 17:44 dcm Antimony,dissolved M200.8 ICP-MS 2 U mg/L 0.0008 0.004 03/04/19 14:03 bsu Antimony,total M200.8 ICP-MS 2 U mg/L 0.0008 0.004 03/04/19 15:30 bsu Arsenic,dissolved M200.8 ICP-MS 2 0.0292 * mg/L 0.0004 0.002 03/04/19 14:03 bsu Arsenic,total M200.8 ICP-MS 2 0.0293 mg/L 0.0004 0.002 03/04/19 15:30 bsu Boron,dissolved M200.7 ICP 1 0.28 mg/L 0.01 005 03/01/19 16:26 dcm Boron,total M200.7 ICP 2 0.28 mg/L 0.02 0.1 03/06/19 17:44 dcm Calcium,dissolved M200.7 ICP 1 321 mg/L 0.1 0.5 03/01/19 1:50 dcm Chromium,dissolved M200.7 ICP 1 U mg/L 0.01 0.05 03/01/19 16:26 dcm Chromium,total M200.7 ICP 2 U mg/L 0.02 0.1 03/06/19 17:44 dcm Copper,dissolved M200.7 ICP 1 U mg/L 0.01 0.05 03/01/19 1:50 dcm Copper,total M200.7 ICP 2 U mg/L 002 0.1 03/06/19 17.44 dcm Iron,dissolved M200.7 ICP 1 9.27 mg/L 0.02 0.05 03/01/19 16:26 dcm Iron,total M200 7 ICP 2 9.28 * mg/L 0.04 0.1 03/06/19 17:44 dcm Lead,dissolved M200.8 ICP-MS 2 U mg/L 0.0002 0.001 03/04/19 14:03 bsu Lead,total M200.8 ICP-MS 2 0.0002 B mg/L 0.0002 0 001 03/04/19 15:30 bsu Magnesium,dissolved M200.7 ICP 1 248 mg/L 0.2 1 03/01/19 1:50 dcm Manganese,dissolved M200.7 ICP 2 0.77 mg/L 0.01 0.05 03/04/19 18:23 dcm Manganese,total M200.7 ICP 2 0.79 mg/L 0.01 0.05 03/06/19 17:44 dcm Mercury,dissolved M245.1 CVAA 1 U mg/L 0.0002 0.001 03/05/19 11:54 the Mercury,total M245.1 CVAA 1 U mg/L 0.0002 0.001 03/07/19 10:28 the Molybdenum,dissolved M200.7 ICP 1 1.11 mg/L 0.02 0.1 03/01/19 1:50 dcm Molybdenum,total M200.7 ICP 2 1.15 mg/L 0.04 0.2 03/06/19 17:44 dcm Potassium,dissolved M200.7 ICP 1 28.3 mg/L 0.2 1 03/01/19 1:50 dcm Silver,dissolved M200.8 ICP-MS 2 U * mg/L 0.0002 0.001 03/04/19 14:03 bsu Silver,total M200.8 ICP-MS 2 U mg/L 0.0002 0.001 03/04/19 15:30 bsu Sodium,dissolved M200.7 ICP 1 230 mg/L 0.2 1 03/01/19 1:50 dcm Thallium,dissolved M200.8 ICP-MS 2 U mg/L 0.0002 0 001 03/04/19 14:03 bsu Thallium,total M200.8 ICP-MS 2 U mg/L 0.0002 0.001 03/04/19 15:30 bsu Uranium,dissolved M200.8 ICP-MS 100 14.1 * mg/L 0.01 0.05 03/04/19 17:36 bsu Uranium,total M200.8 ICP-MS 100 13.3 mg/L 0.01 0.05 03/04/19 17:33 mtm Zinc,dissolved M200.7 ICP 1 U mg/L 0.01 0.05 03/01/19 1:50 dcm Zinc,total M200.7 ICP 2 U mg/L 0.02 0.1 03/06/19 17:44 dcm REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. L50185-1909231417 Page 3 of 34