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• • •~ <br />TABLE 4 <br />AREA WATER WELLS - BASELINE WATER QUALITY <br />HELEN MINE PROJECT <br />SUNDANCE COAL COMPANY <br /> Sundance Coal Co. <br /> Iuppa Well Daniels Well Well <br /> Parameters Unit 05/13/82 05/13/82 05/13/82 <br /> pH 7.80 7.40 7,40 <br /> Conductivity at 25°C umhos/cm 2250 1700 1200 <br /> Total Dissolved Solids mg/1 1728 1252 790 <br /> Total Hardness (as Ca CO3) mg/1 655 700 370 <br /> Carbonate (CO3- ) mg/1 <1 < 1 < 1 <br /> Bicarbonate (HCO3 1) mg/1 40B 373 457 <br /> Calcium (Ca) mg/1 180 180 99 <br /> Chloride (C1'1) mg/1 13.6 33.9 30.9 <br /> Fluoride (F'1) mg/1 0.47 0.40 0.25 <br /> Magnesium (Mg) mg/1 50 61 30 <br />~, Ammonia - Nitrogen (NH3) mg/1 <0.02 <0.02 < 0.02 <br />~ ~ Nitrate - Nitrogen (NO3-1) mg/1 22 q.4 q,l <br /> Phosphate: Total (PO4-3) mg/1 0.02 <0.01 <0.01 <br /> Potassium (K) mg/1 6.0 3.3 2.8 <br /> Sodium (Na) mg/1 300 110 160 <br /> Sulfate (SOq-2) mg/1 BSb 606 270 <br /> Sulfide (S' ) mg/1 <,O1 <.O1 <.O1 <br /> Aluminum (A1) mg/1 <0.1 < 0.1 < 0.1 <br /> Arsenic (As) mg/1 < 0.01 < 0.01 <0.01 <br /> Barium (Ba) mg/1 <0.1 <0.1 <0.1 <br /> Boron (B) m9/1 0.17 0.26 0.23 <br /> Cadmium (Cd) mg/1 <0.1 <0.1 <0.1 <br /> Chromium (Cr) mg/1 <0.1 <0,1 <0.1 <br /> Copper (CU) mg/1 <0.01 <0.01 <0.01 <br />r Iron (Fe) mg/1 <,OS <.OS <,OS <br />= Lead (Pb) mg/1 <0.05 ~ <0.05 <0.05 <br />m <br />a Manganese (Mn) mg/1 <0.01 <0.01 <0.01 <br /> Mercury (Hg) mg/1 <0.003 <0.003 <0.003 <br /> Molybdenum (Mo) mg/1 <0.1 <0.1 <0.1 <br />G Nickel (Ni) mg/1 <0.05 <0.05 <0.05 <br />= Selenium (Se) mg/1 <0.01 <0.01~ <0.01 <br />p Zinc (Zn) mg/1 <0.01 0.02 <0.01 ` <br />~ Total Uranium (U) mg/1 0.002 0.005 0.002 <br /> SA;~ ; . ~ ~ <br />~ 3.~ <br />m <br />, <br />s <br /> <br />