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Table 1.2-2 <br />Hydrology Monitoring Requirements - New Elk Mine' <br />Field Measurements NPDES Biomonitoring <br />Flow Rate/Water Level Depth Frequency and parameters in <br />pH (S.U.) accordance with NPDES Permit <br />Conductivity (umhos) <br />Temperature Sediment Pond NPDES List <br /> Frequency and parameters in <br />Short List accordance with NPDES Permit <br />Sodium Adsorption Ratio (SAR) <br />Total Suspended Solids (TSS)(mg/1)2 Sewage Treatment <br />Total Dissolved Solids (TDS) (mg/1) Frequency and parameters in <br />Carbonate (mg/1) accordance with NPDES Permit <br />Bicarbonate (mg/1) <br />Chloride (mg/1) NE-080 (PRS-4) <br />Sulfate (mg/1) Frequency and parameters in <br />Manganese (Mn) (mg/1) total, dissolved accordance with NPDES Permit <br />Potassium (K)(mg/1) <br />Sodium (Na)(mg/1) <br />Iron (Fe)(mg/1) total, dissolved, total recoverable2 <br />Fluoride (F)(mg/1) <br />Hardness (calculated) <br />• <br />From Table 28, New Elk Permit C-81-012 <br />2 Surface Water Only <br /> <br />6