2011-04-18_REPORT - C1996083 (4)

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• ble 2 Bowie Re es, LLC Bowie No. 2 Mine 2010 Annual Hydrology Report SURFACE WATER LIST 1 Field Parameters Flow Rate ( pm) Water Level pH (Standard Units) Conductivity (umhos/cm) Temerature (C) `Dissolved Oxygen (m I) Lab Parameters Wet Chemistry MDL Bicarbonate (HC03) (mg/1) 2 mg/L Chloride (Cl*) (mg/1) 0.5 mg/L Conductivity (umhos/cm) 1 umhos/cm Nitrate/Nitrite (mg/1) 0.1 mg/L pH (Standard Units) 0.1 s.u. Hardness (mg/1) 1 mg/L Phosphate (P0;3 as P) (mg/1) 0.02 mg/L Residue, Filterable (TDS) @180 C (mg/1) 0.5 m L Residue, NonFilterable (TSS) (mg/1) 0.5 mg/L Sodium Absorption Ratio in Water 0.15 Sulfate (S04-) (mg/1) 0.6 mg/L Metals Aluminum (AI), total recoverable (mg/1) 0.05 mg/L Arsenic (As), total recoverable (m 1) 0.002 m L Cadmium (Cd), total recoverable (m 1) 0.0002 m L Calcium (Ca'2), total recoverable (mg/1) 0.2 m L Copper (Cu), total recoverable (m 1) 0.01 m L Iron (Fe), total recoverable (m I) 0.01 m L Lead (Pb), total recoverable (m 1) 0.02 mg/L Magnesium (Mg'2), total recoverable (mg/1) 0.2 m L Manganese (Mn), total recoverable (mg/1) 0.01 m L Mercury (Hg), total recoverable (m 1) 0.000025 m L Molybdenum (Mo), total recoverable (m I) 0.02 m L Selenium (Se), total recoverable (m 1) 0.001 m L Sodium (NA'), total recoverable (mg/l) 0.2 m L Zinc (Zn), total recoverable (m I) 0.005 mg/1-1 Analysis Oil and Grease (mg/1) 0.5 mg/L LAB PARAMETER LIST SURFACE WATER LIST 2 Field Parameters Flow Rate ( pm) Water Level pH (Standard Units) Conductivity (umhos/cm) Temerature (C) 'Dissolved Oxygen (m I) Lab Parameters Wet Chemistry MDL pH (Standard Units) 0.1 s.u. Residue, Filterable (TDS) @180 C (mg/1) 0.5 mg/L Ammonia (NH3) (mg/1) 0.1 mg/L Chloride (CI) (mg/1) 0.5 mg/1- Cyanide (CN) (mg/1) 0.2 mg/1- Dissolved Oxygen (mg/l) Report Hardness (mg/1) 1 mg/L Nitrate (N03) (mg/l) 01 mg/L Nitrite (N02) (Mg/1) 0.01 mg/L Sulfide (S) (mg/1) 0.2 mg/L Sulfate (S04--)(mg/1) 0.1 mg/L Metals Arsenic (As), total recoverable (u 1) 0.002 m L Boron, total recoverabel (mg/1) 0.1 m L Cadmium (Cd), total recoverable (u 1) 0.0002 m L Chromium III Crlll (u 1) 0.01 m L Chromium VI CrIV (ug/I) 0.02 mg/L Copper (Cu), total recoverable (ug/1) 0.01 mg/1-1 (Fe), dissolved (u 1) 0.005 mg/1-1 (Fe), total recoverable (ug/1) 0.001 mg/1-1 (Pb), total recoverable (u 1) 0.01 m L Manganese (Mn), dissolved (u I) 0.01 m L Manganese (Mn), total recoverable (u 1) 0.01 m L Mercury (Hg), total recoverable (u 1) 0.000025 m L Nickel, total recoverable (u 1) 0.02 m L Selenium (Se), total recoverable (ug/I) 0.001 mg/L Silver (Ag), total recoverable (ugh) 0.001 mg/L Zinc (Zn), total recoverable (ug/1) 0.005 m L T2-1 GROUND WATER Field Parameters Water Elevation (Feet) Depth to Water (Feet) pH (Standard Units) Conductivity (umhos/cmT Temperature (C) Lab Parameters Wet Chemistry MDL Bicarbonate (HCO3) (mg/l) 2 mg/L Carbonate (CO3) (mg/1) 2 mg/L Chloride (CI") (mg/I) 0.5 mg/L Conductivity (umhos/cm) 1 umhos/cm Nitrate/Nitrite (mg/1) 0.1 m L Ammonia (NH3) (mg/1) 0.1 mg/L pH (Lab Units) 0.1 mg/L Hardness (mg/1) 1 mg/L Phosphate (PO, 3 as P) (mg/1) 0.02 m L Residue, Filterable (TDS) @ 180 C (mg/1) 0.5 mg/L Sulfate (S04-') (Mgt[) 0.6 mg/L Metals Arsenic (As), dissolved (mg/1) 0.002 mg/L Cadmium (Ccl), dissolved (m 1) 0.0002 m L Calcium (C8'2), dissolved (mg/1) 0.2 m L Iron (Fe), dissolved (m 1) 0.01 m Iron (Fe), total recoverable (m 1) 0.01 m L Magnesium (Mg'2), dissolved (mg/1) 0.2 mgf- Man anese (Mn), dissolved (mg/1) 0.01 m L Manganese (Mn), total recoverable (m I) 0.01 m L Mercury (Hg), dissolved (m 1) 0.000025 m L Selenium (Se), dissolved (m 1) 0.001 in L Sodium (NA'), dissolved (mg/1) 0.2 m L Zinc (Zn), dissolved (m 1) 0.005 m L Refer to Pages 2.05-126 and 2.05-127 of Permit Application Surface Water List 2 is applicable annually for North Fork Gunnison and Deer Trail Ditch only NOTE: Springs are considered Surface Water `Dissolved Oxygen is reported for Deer Trail Ditch, Fire Mountain Canal and North Fork Gunnison