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TABLE OF CONTENTS <br />SECTION 2.04.7 <br />HYDROLOGY DESCRIPTION <br />SITE SPECIFIC GROUNDWATER INFORMATION AND BASELINE DATA.................2 <br />Baseline Groundwater Levels..............................................................................................2 <br />NHN Permit Area Geomorphology...................................................................................19 <br />AlluvialWater Level............................................................................................................3 <br />Surface Water Monitoring.................................................................................................20 <br />Overburden Water Levels....................................................................................................3 <br />SurfaceWater Flow...........................................................................................................21 <br />DakotaCoal Water Levels...................................................................................................4 <br />SurfaceWater Quality........................................................................................................22 <br />Underburden Water Levels..................................................................................................4 <br />ChannelCharacteristics.....................................................................................................25 <br />BackfillWater Levels..........................................................................................................4 <br />PredictedPeak Flows.........................................................................................................25 <br />Recharge and Hydrologic Boundaries.................................................................................5 <br />Relationships Among Flow, TSS and TDS.......................................................................25 <br />Infiltration and Permeability of the Unsaturated Zone........................................................5 <br />StockWater Ponds.............................................................................................................25 <br />Discharge.............................................................................................................................6 <br />Evapotranspiration...............................................................................................................7 <br />Aquifer Characteristics of the New Horizon Mining Areas................................................7 <br />Baseline Groundwater Quality.............................................................................................8 <br />Overburden Zone Groundwater Quality..............................................................................9 <br />Coal Zone Groundwater Quality..........................................................................................9 <br />Underburden Zone Groundwater Quality..........................................................................11 <br />Springsand Seeps..............................................................................................................11 <br />Present Groundwater Use..................................................................................................12 <br />Potential Groundwater Use................................................................................................13 <br />REGIONAL SURFACE WATER CHARACTERISTICS......................................................16 <br />Regional Surface Water Flow............................................................................................16 <br />Regional Surface Water Quality........................................................................................19 <br />SITE SPECIFIC SURFACE WATER INFORMATION <br />........................................................19 <br />NHN Permit Area Geomorphology...................................................................................19 <br />Surface Water Monitoring.................................................................................................20 <br />SurfaceWater Flow...........................................................................................................21 <br />SurfaceWater Quality........................................................................................................22 <br />ChannelCharacteristics.....................................................................................................25 <br />PredictedPeak Flows.........................................................................................................25 <br />Relationships Among Flow, TSS and TDS.......................................................................25 <br />StockWater Ponds.............................................................................................................25 <br />Section 2.04.7 March 2018 (TR -16) <br />