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W W RESOURCE <br />HYDROGEOLOGIC <br />V SERVICES <br />Table 3. <br />GCC Groundwater Baseline Water Quality Parameter Suite (GCC GW Baseline) <br />Parameter <br />Units <br />Justification for Addition <br />Comments <br />Potassium (K) <br />mg/L <br />Rounding out major ion constituents with K, <br />Cl will allow for better interpretation with <br />trilinear plotting <br />Chloride (Cl-) <br />mg/L <br />Calcium (Ca *2) <br />mg/L <br />Magnesium (M 'Z) <br />mg/L <br />Sodium Na <br />mg/L <br />Sulfate (SO4) <br />mg/L <br />Alkalinity, as CaCO3 <br />mg/L <br />Silica (Si01) <br />mg/L <br />Allows comparison of TDS vs. sum of major <br />ions <br />Manganese (Mn) <br />mg/L <br />Fluoride (F) <br />mg/L <br />Secondary ion that has been identified with <br />minor potential nuisance value <br />Iron (Fe) <br />mg/L <br />Aluminum (Al) <br />mg/L <br />Trace metals commonly associated with coal <br />mining impacts <br />Arsenic (As) <br />Cadmium (Cd) <br />Copper(Cu) <br />Lead (Pb) <br />Mercury (Hg) <br />Molybdenum (Mo) <br />Selenium (Se) <br />Zinc (Zn) <br />Uranium (U) <br />mg/L <br />DRMS request via HGCAP <br />Hardness, as CaCO3 <br />mg/L <br />Bicarbonate, as CaCO3 <br />mg/L <br />Carbonate, as CaCO3 <br />mg/L <br />Hydroxide, as CaCO3 <br />mg/L <br />Total Nitrogen as Nitrate -Nitrite <br />mg/L <br />Distinguish fertilizer and/or stock impacts <br />Ammonia (NH3) <br />mg/L <br />Distinguish fertilizer and/or stock impacts <br />1 -time only to establish <br />absence, SW and Alluvial GW <br />only in 2016Q4 <br />Phosphate (PO4 as P) <br />mg/L <br />Distinguish fertilizer and/or stock impacts <br />1 -time only to establish <br />absence, SW and Alluvial GW <br />only in 2016Q4 <br />pH (lab) <br />SU <br />Total Dissolved Solids (TDS) <br />mg/L <br />Total Organic Carbon (TOC) <br />mg/L <br />Surrogate parameter for coal mining impacts <br />Temperature (field) <br />°C <br />pH (field) <br />SU <br />Allows comparison of field vs. lab <br />measurements, key for proper Bicarb, Carb, <br />Hydroxide calculations <br />Specific Conductivity (field) <br />MS/Cm <br />Oxygen Reduction Potential (ORP) (field) <br />mV <br />To predict states of chemical speciation of <br />water, i.e. dissolved metals <br />Depth to Water (field, wells only) <br />ft <br />Notes: <br />New analytes in bold, italicized red text <br />mg/L =milligrams per liter <br />SU=standard units <br />mS/cm millisiemens per centimeter <br />ft =feet <br />mV=milivolt <br />GCC ENERGY, LLC <br />2016 ANNUAL HYDROLOGY REPORT <br />14 <br />