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TABLE OF CONTENTS <br />SECTION 2.04.7 <br />HYDROLOGY DESCRIPTION <br />SITE SPECIFIC GROUND WATER INFORMATION AND BASELINE DATA................1 <br />Baseline Ground Water Levels............................................................................................2 <br />AlluvialWater Level............................................................................................................3 <br />OverburdenWater Levels....................................................................................................3 <br />Dakota Coal Water Levels...................................................................................................3 <br />Underburden Water Levels..................................................................................................4 <br />BackfillWater Levels..........................................................................................................4 <br />Recharge and Hydrologic Boundaries.................................................................................5 <br />Infiltration and Permeability of the Unsaturated Zone........................................................5 <br />Discharge.............................................................................................................................6 <br />Evapotranspiration...............................................................................................................7 <br />Aquifer Characteristics of the New Horizon Mining Areas................................................7 <br />Baseline Ground Water Quality...........................................................................................8 <br />Overburden Zone Ground Water Quality............................................................................9 <br />Coal Zone Ground Water Quality ........................................................................................ 9 <br />Underburden Zone Ground Water Quality........................................................................11 <br />Springsand Seeps..............................................................................................................11 <br />Present Ground Water Use.................................................................................................12 <br />Potential Ground Water 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........................................................19 <br />NHN Permit Area Geomorphology...................................................................................19 <br />SurfaceWater 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 February 2017 (TR -15) <br />