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J <br />j <br />Table 3.3-18 <br />GROUNDWATER CHEMICAL ANALYSIS <br />Monitoring Well Number SK-3.75 <br />Location STORM KING <br />Geologic Unit Monitored WHEELER COAL <br />Ground Elevation (ft-amsl) 7200 <br />Date of Collection 10/27/83 01/24/84 03/27/Ba <br />FIELD PARAMETERS 1 <br />Conductivity <br />(umhos/cm at 25 (C)) 825 855 710 <br />pH (units) 9,59 8.93 9.14 <br />Water Temperature (C) 10.7 10.0 <br />LABORATORY PARAMETERS <br />Alkalinity (as CaC03) 480 440 450 <br />Aluminum 0,3 0.3 -0.1 <br />Arsenic -0.01 -0.01 -0.01 <br />Barium 0.1 0.1 0.1 <br />Bicarbonate 480 415 410 <br />Boron 0.46 0.46 0.51 <br />Cadmium -0.01 -0.01 -0.01 <br />Calcium 44 8.2 11 <br />Carbonate 49 55 67 <br />Cation - Anion <br />~ <br />Balance (~) 3 1.37 -1.1 .74 <br />Chloride 27 5.7 6.4 <br />Chromium -O.Ot 0.01 -O,Ot <br />Conductivity <br />(umhos/cm at 25 (C)) 840 790 780 <br />Copper 0.06 0.1a 0.01 <br />fluoride i,1 1,4 1,3 <br />Hardness (as CaC03) 210 36 64 <br />Iron (dissolved) 16 9.5 2.2 <br />Lead 0,02 0.31 -0,01 <br />Magnesium 25 3.7 8.5 <br />Manganese 0,16 0,11 0.04 <br />Mercury (ug/I) -1,0 1.00 -1,00 <br />Molybdenum -0.1 -0.1 0.1 <br />Nitrogen - Ammonia 2,4 0.97 22 <br />Nitrate a5 N 0.09 0.11 -0.05 <br />pH (units) 8.5 9.2 9.3 <br />Phosphate .61 ,43 ,12 <br />Phosphorus 0.02 .14 ,04 <br />Potassium 13 8.4 <br />SAR (units) 4,9 <br />Selenium -0.01 -0.01 -0,01 <br />Sodium 165 185 175 <br />Solids, Total Dissolvetl 610 540 500 <br />Sulfate 71 4,4 3.9 <br />Zinc 0.24 0.21 0.07 <br />1 All measurements are in milligrams Der liter <br />A minus sign Indicates concentrations below <br />2 Negative acidity indica+es that the water Is <br />3 A negative balance indicates that cations ex <br />3-58 <br />(mg/I) unless otherwise no+ed. <br />analytical detection limits, <br />alkaline. <br />teed anions. <br />REV: 05/10/84 <br />