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Groundwater <br />GW -N43 <br />Quarterly <br />Water level, Temperature, , <br />pH <br />See Below <br />250C <br />Solids <br />Conductivity <br />Groundwater <br />GW -N44 <br />Quarterly <br />Water level, Temperature, pH, <br />See Below <br />(Mg+z)D <br />Conductivity <br />Groundwater <br />GW -N45 <br />Quarterly <br />Water level, Temperature, , <br />pH <br />See Below <br />Conductivity <br />(Mn)TD <br />Groundwater <br />GW -N46 <br />Quarterly <br />Water level, Temperature, pH, <br />See Below <br />Carbonate <br />Chloride <br />Nitrogen as <br />Conductivity <br />Iron TR <br />1. GW -N3 monitors the underburden aquifer adjacent to the New Horizon 1 mine area. <br />2. GW-N16P1 monitors the underburden aquifer directly adjacent to the mining area. <br />3. GW-N17P1 monitors the Dakota coal aquifer directly adjacent to the mining area. <br />4. GW-N18P1 monitors the overburden aquifer directly adjacent to mining area. <br />5. GW -N36 monitors the overburden aquifer and represents the up gradient condition. <br />6. GW -N37 monitors the Dakota coal aquifer and represents the up gradient condition. <br />7. GW -N38 monitors the underburden aquifer and represents the up gradient condition. <br />8. GW -N39 monitors the alluvial aquifer which represents the up gradient condition. <br />9. GW -N40 monitors the alluvial aquifer which represents the adjacent condition. <br />10. GW -N41 monitors the overburden aquifer up gradient of the mining area. <br />11. GW -N42 monitors the Dakota coal aquifer up gradient of the mining area. <br />12. GW -N43 monitors the underburden aquifer up gradient of the mining area. <br />13. GW -N44 monitors the overburden aquifer and represents the down gradient condition. <br />14. GW -N45 monitors the Dakota coal aquifer and represents the down gradient condition. <br />15. GW -N46 monitors the underburden aquifer and represents the down gradient condition. <br />For the groundwater sites, water levels, field parameters, and laboratory analyses will be collected <br />quarterly with the parameters listed below. <br />Quarterly Groundwater Laboratory Parameters <br />pH <br />Conductivity at <br />Total Dissolved <br />Bicarbonate (HCO3 )D <br />Calcium (Ca+')D <br />250C <br />Solids <br />Magnesium <br />Ammonia (NH3 )D <br />Nitrate D <br />Phosphate (PO4 as P) <br />Sodium (Na) <br />(Mg+z)D <br />Sulfate (SOa) <br />Arsenic (As) <br />Iron (Fe) <br />Lead (Pb) <br />Manganese <br />(Mn)TD <br />Mercury (Hg) <br />Selenium (Se) <br />Zinc (Zn) Tn—Alkalinity <br />Alumium <br />Carbonate <br />Chloride <br />Nitrogen as <br />Nitrogen as Nitrite <br />Iron TR <br />Nitrate <br />Lead <br />Molybdenum <br />Potassium <br />Sodium <br />Cation/Anion <br />Balance <br />D = Dissolved <br />TD = Total Dissolved <br />T = Total <br />TR = Total Recoverable <br />Probable Hydrological Consequences <br />A discussion of the probable hydrologic consequences and reclamation plan are contained in Section <br />2.05.6(3) and Section 2.05.6(3)(b)(v) of the permit application document. The following discussion is <br />intended to supplement the description of potential impacts of mining and mitigation of these potential <br />Page 2.04.7-30 March 2017 (TR -77) <br />