2016-01-27_HYDROLOGY - M1979059 ‎(2)‎

• Permit No: M1979059
• IBM Index Class Name: HYDROLOGY
• Doc Date: 1/27/2016
• Doc Name: Groundwater Modeling Report
• From: Weiland, Inc.
• To: DRMS
• Email Name: MAC
• Media Type: D
• Archive: No

TABLE OF CONTENTS
Page
1.0 INTRODUCTION 1
2.0 MODEL PURPOSE AND DESIGN 2
2.1. MODEL DISCRETIZATION AND METHODS 2
2.2. HYDRO-STRATIGRAPHIC UNITS 2
2.2.1. Upper Silt and Loess Layer 4
2.2.2. Lower Gravel Aquifer 4
2.3. Aquifer Characterization 4
2.4. INPUT PARAMETERS 5
2.4.1. Hydraulic Conductivities 5
2.4.2. Big Thompson River 5
2.4.3. Thompson Ponds 5
2.4.4. Hillsborough Ditch 5
2.4.5. West Pit Dewatering 5
2.4.6. West Pit Reclamation 6
2.4.7. East Pit Dewatering 6
2.4.8. East Pit Reclamation 6
2.5. INFILTRATION/SEDIMENT POND 7
2.6. ALLUVIAL WELLS 7
2.7. MODEL BOUNDARY CONDITIONS 7
2.8. MODEL CALIBRATION AND STEADY STATE SIMULATION 7
3.0 MODEL OUTPUT 9
3.1. EXISTING WATER TABLE 9
3.2. DEWATERING WEST PIT (460 GPM) 9
3.2.1. Water Surface Elevations 9
3.3. DEWATERING EAST PIT (1,040) GPM 10
3.3.1. Water Surface Elevations 10
3.4. Reclamation Conditions 11
3.4.1. Water Surface Elevations 11
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