2010-08-02_REVISION - M1977300 (32)

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Cotter Corporation PROCEDURE Number: 3-4 Schwartzwalder Mine Page: 2 of 9 Golden, Colorado WATER MONITORING Revision: 8 Date: 08/01/2010 TABLE 1: STREAM WATER SAMPLING - EXTENDED SUITE ANALYTICAL PARAMETERS L • Stream Water Quality Parameter Unit LLD Sample Volume Preservative Field Filtered G eneral Pro perties Total Dissolved Solids TDS m /L 10 500mL Cool to 4°C Yes Total Suspended Solids TSS m /L 4.0 1 Liter Cool to 4°C No Temperature field measured °C Field measured No No Conductivity field measured us Field measured No No pH field measured S.U. Field measured No No Ma"or ions Alkalinity (total as CaC03) mg/L 1.0 500mL Cool to 4°C No Bicarbonate (as HC03) mg/L 1.0 500mL Cool to 4°C No Calcium mg/L 0.10 250mL HN03 Yes Chloride m /L 3.0 500mL Cool to 4°C No Cyanide weak acid dissociable m /L 0.005 500mL NaOH & Cool to 4°C No Fluoride m /L 0.1 500ml- Cool to 4°C No Magnesium mg/L 0.10 250mL HN03 Yes Potassium mg/L 0.10 250mL HN03 Yes Sodium mg/L 0.10 250mL HN03 Yes Sulfate m /L 5.0 500mL Cool to 4°C No Nutrients Nitrate+Nitrite m /L 0.1 250mL Cool H SO No Phosphate m /L 0.003 250 L 2 4 ° No Phosphorus m /L 0.01 m to 4 C No Metals Total Aluminum mg/L 0.20 HN03 No Antimony mg/L 0.001 HN03 No Arsenic mg/L 0.10 HN03 No Boron mg/L 0.1 HN03 No Chromium mg/L 0.1 HN03 No Copper mg/L 0.005 HN03 No Iron mg/L 0.03 HN03 No Lead mg/L 0.005 250mL HN03 No Manganese mg/L 0.01 HN03 No Mercury mg/L 0.0001 HN03 No Molybdenum mg/L 0.005 HN03 No Silver mg/L 0.001 HN03 No Thallium mg/L 0.001 HN03 No Uranium mg/L 0.0002 HN03 No Zinc mg/L 0.005 HN03 No Metals Dissolved Aluminum mg/L 0.20 HN03 Yes Antimony mg/L 0.001 HN03 Yes Copper mg/L 0.005 HNO3 Yes Iron mg/L 0.03 HN03 Yes Manganese mg/L 0.01 250 L HNO3 Yes Molybdenum mg/L 0.005 m HN03 Yes Silver mg/L 0.001 HNO3 Yes Thallium mg/L 0.001 HN03 Yes Uranium mg/L 0.0002 HN03 Yes Zinc mg/L 0.005 HN03 Yes Radionuclides Total Gross Alpha pCi/L HNO3 No Gross Beta pCi/L 1 Gallon HN03 No Radium 226+228 pCi/L 0.2 HN03 No Radi onuclides Dissolved Radium 226 pCi/L 0.2 2 Liter HN03 Yes