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Schwartzwalder Mine -Hydrologic Evaluation of Mine Closure and Reclamation 93 <br />Table 28. Groundwater Quality Standards <br /> Groundwater Standards for Drinking Agricultural Standards <br />Parameter Water and Humao Health for Groundwater <br />Total Coliform K° 1 org/100 mL <br />Color (color units) 15 (s) <br />Phenol (mg/L) 0.300 (s) <br />Chlorophenol (mg/L) 0.0002 (s) <br />Corrosivi Non-corrosive s <br />pH <br />6.5-8.5 (s) <br />6.5-8.5 <br />Temperature (°C) --- <br />Conductivity (µmhos/cm) --- <br />Alkalinity (mg CaCOs/1) --- <br />Bicazbonate m CaCO,/1 --- <br />Boron (mg/L) --- 0.75 <br />Calcium (mg/L) --- <br />Chloride (mg/L) 250 (s) <br />Fluoride (mg/L,) 4 2 <br />Nitro en, ammonia m --- <br />Nitrogen, nitrate (mg/L) 10 <br />Nitrogen, nitrite (mg/L) 1 10 <br />Nitrogen, nitrate + nitrite (mg/1,) 10 100 <br />Phosphorus, total (mg/L) --- <br />Potassium m L --- <br />Sodium (mg/L) <br /> <br />Sulfate (mg/L) 250 (s) <br />TDS (mg/L) 500 (s) <br />Aluminum (mg/L) --- 5 <br />Antimon m 0.006 <br /> 05 <br />0 0.1 <br />Arsenic (mg/L) . <br />Asbestos (fibers/liter) 7,000,000 <br />Barium (mg/L) 2 <br />Beryllium (mg/L) 0.004 0.1 <br />Cadmium m 0.005 O1 <br />Chromium, total (mg/L) 0.1 0.1 <br />Cobalt (mg/L) --- 0.05 <br />Copper (mg/L) 1.0 (s) 0.2 <br />Cyanide [free] (mg/L) 0.20 <br />Iron (mg/L) 0.3 (s) 5 <br />Lead m 0.05 0.1 <br />Lithium (mg/L) --- 2.5 <br />Magnesium (mg/L) --- <br />0 <br />2 <br />Manganese (mg/L) 0.05 (s) . <br />Mercury (mg/L) 0.002 0.01 <br />Molybdenum (mg/L) --- <br />0 <br />2 <br />Nickel m 0.1 . <br />Selenium (mg/L) 0.05 0.02 <br />Silver 0.05 <br />Thallium 0.002 <br />Uranium m L --- <br /> --- 0.I <br />Vanadium (mg/L) 0 <br />2 <br />Zinc (mg/L) <br />5.0 (s) <br />. <br />Gross Alpha (pCi/1) 15 <br />Gross Beta (pCi/I) 4 mrem/yr (8 pCi/1,) <br />Radium-226 and -228 (pCi/L) 5 pCi/L <br />Americium (total) (pCi/L) 0.15 <br />Cesium 134 (pCi/L) 80 <br />Plutonium 239/240 (total) (pCi/I) 0.15 <br />Strontium 90 (total) (pCi/L) 8 <br />Thorium 230/232 (total) (pCi/L) 60 <br />Tritium (pCi/L) 20,000 <br />NOTES: Standards from Colorado Administrative Code SCCR 1002-01 and SCCR 1002-48 <br />--- = no established State standard <br />s =secondary standard <br />Gross beta standard of 4 mrem/yr exposure is converted to 8 pCi/L concentration by assuming a 2-liter per day <br />intake of water for an 80-kg human, and that the beta activity is due to Sr-90. <br />4109B.071116 Whetstone Associates <br />