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RESOURCE <br />HYDROGEOLOGIC <br />SERVICES <br />Table 2. <br />GCC Surface Water Baseline Water Qualitv Parameter Suite (GCC SW 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 />CI will allow for better interpretation with <br />trilinear plotting <br />Chloride (CI-) <br />mgA <br />Calcium (Ca") <br />mg/L <br />Magnesium (M`t) <br />mg/L <br />Sodium Na' <br />mg/L <br />Sulfate (SO4) <br />mg/L <br />AI ka l i n i ty, as Ca CO3 <br />mg/L <br />Silica (SID 2) <br />mg/L <br />Allows comparison of TDS vs. sum of major <br />ions <br />Manganese (Mn) <br />mg/L <br />Fluoride (F) <br />m9/1 <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 />DBMS 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 with field kit to <br />establish absence, SW and <br />Alluvial GW only in 2016Q4 <br />Phosphate (PO4 OSP) <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 />Sodium Adsorption Ratio (SAR)m91L <br />Measure of suitability for agricultural <br />irrigation <br />Oil & Grease <br />mg/L <br />Indication of background/upstream impacts <br />pH (lab) <br />SU <br />Total Dissolved Solids (TDS) <br />mg/L <br />Total Suspended Solids (755) <br />mg/L <br />Provides mass of particulates causing <br />turbidity <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 />Dissolved Oxygen (DO) (field) <br />mg/L <br />General water quality parameter to <br />document available oxygen <br />Flow Rate (field, ditch only) <br />cfs <br />Notes: <br />New analytes in bold, italicized red text <br />mg/L = milligrams per liter <br />SU =standard units <br />m5/cm millisiemens per centimeter <br />cfs = cubic feet per second <br />mV=milivolt <br />GCC ENERGY, LLC <br />2016 ANNUAL HYDROLOGY REPORT <br />13 <br />