2019-11-27_HYDROLOGY - M1977300 (2)

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A OZ Laboratories, Inc. 2773 Downhill Drive Steamboat Springs, CO 80487(800)334-5493 Alexco Water&Environmental Inc. ACZ Sample ID: L50225-01 Project ID: Schwarzwalder Mine Date Sampled: 02127119 00:00 Sample ID: MW-19 Date Received: 02128119 Sample Matrix: Groundwater Inorganic Prep MethodParameter EPA Dilution Result •ua] XQ Units MDL PQ1L Date Analyst Cyanide,WAD SM4500-CN I-distillation 03/08/19 12:47 ttg Phosphorus,total M365.1 -Auto Ascorbic 03/11/19 12:38 rbt Acid Digestion Total Hot Plate M200.2 ICP-MS 03/07/19 10:35 rap Digestion Total Hot Plate M200.2 ICP 03/06/19 12:21 dcm Digestion Metals Analysis Parameter EPA Method Dilution Result Qual XQ Units MDIL PQL Date Analyst Aluminum,dissolved M200.7 ICP 1 U mg/L 0.03 0.2 03/05/19 17:35 dcm Aluminum,total M200.7 ICP 1 0.04 B mg/L 0.03 0.2 03/07/19 20:15 dcm Antimony,dissolved M200.8 ICP-MS 1 U mg/L 0.0004 0.002 03/05/19 11:46 mfm Antimony,total M200.8 ICP-MS 1 U mg/L 0.0004 0.002 03/11/19 16:21 mfm Arsenic,dissolved M200.8 ICP-MS 1 U mg/L 0.0002 0.001 03/05/19 11:46 mfm Arsenic,total M200.8 ICP-MS 1 U mg/L 0.0002 0.001 03/11/19 16:21 mfm Boron,dissolved M200.7 ICP 1 0.07 mg/L 0.01 0.05 03/05/19 17:35 dcm Boron,total M200.7 ICP 1 0.06 mg/L 0.01 0.05 03/08/19 15.01 dcm Calcium,dissolved M200.7 ICP 1 52.5 mg/L 0.1 0.5 03/05/19 17.35 dcm Chromium,dissolved M200.7 ICP 1 U mg/L 0.01 0.05 03/05/19 17:35 dcm Chromium,total M200.7 ICP 1 U mg/L 0.01 0.05 03/07/19 20:15 dcm Copper,dissolved M200.7 ICP 1 U mg/L 0.01 0.05 03/05/19 17:35 dcm Copper,total M200.7 ICP 1 U mg/L 001 0.05 03/07/19 20:15 dcm Iron,dissolved M200.7 ICP 1 U mg/L 0.02 005 03/05/19 17:35 dcm Iron,total M200.7 ICP 1 0.07 mg/L 002 0.05 03/07/19 20:15 dcm Lead,dissolved M200.8 ICP-MS 1 U mg/L 0.0001 0.0005 03/05/19 11:46 mfm Lead,total M200.8 ICP-MS 1 U mg/L 00001 0.0005 03/11/19 16:21 mfm Magnesium,dissolved M200.7 ICP 1 33.9 mg/L 0.2 1 03/05/19 17:35 dcm Manganese,dissolved M200.7 ICP 1 U mg/L 0.005 0.03 03/05/19 17:35 dcm Manganese,total M200.7 ICP 1 0.007 B mg/L 0 005 0.03 03/07/19 20:15 dcm Mercury,dissolved M245.1 CVAA 1 U mg/L 0.0002 0.001 03/12/19 13:50 the Mercury,total M245.1 CVAA 1 U mg/L 0.0002 0.001 03/13/19 15:07 the Molybdenum,dissolved M200.7 ICP 1 0.04 B mg/L 0.02 0.1 03/05/19 17:35 dcm Molybdenum,total M200.7 ICP 1 0.05 B mg/L 0.02 0.1 03/07/19 20:15 dcm Potassium,dissolved M200.7 ICP 1 3.9 mg/L 0.2 1 03/05/19 17:35 dcm Silver,dissolved M200.8 ICP-MS 1 U mg/L 00001 0.0005 03/05/19 11:46 mfm Silver,total M200 8 ICP-MS 1 U mg/L 0.0001 0.0005 03/11/19 16:21 mfm Sodium,dissolved M200.7 ICP 1 50.8 mg/L 0.2 1 03/05/19 17:35 dcm Thallium,dissolved M200.8 ICP-MS 1 U mg/L 0.0001 0.0005 03/05/19 11:46 mfm Thallium,total M200.8 ICP-MS 1 U mg/L 0.0001 0.0005 03/11/19 16:21 mfm Uranium,dissolved M200.8 ICP-MS 1 0.778 mg/L 0.0001 0.0005 03/05/19 11:46 mfm Uranium,total M200 8 ICP-MS 1 0.865 mg/L 0.0001 0.0005 03/11/19 16:21 mfm Zinc,dissolved M200.7 ICP 1 U mg/L 0.01 0.05 03/05/19 17:35 dcm Zinc,total M200.7 ICP 1 U mg/L 0.01 0.05 03/07/19 20:15 dcm REPIN.02.06.05.01 *Please refer to Qualifier Reports for details. L50225-1910040959 Page 3 of 33