2020-03-30_HYDROLOGY - M1977285

• Permit No: M1977285
• IBM Index Class Name: HYDROLOGY
• Doc Date: 3/30/2020
• Doc Name: Hydrogeology Report
• From: Western Water & Land, Inc.
• To: DRMS
• Email Name: LJW
• Media Type: D
• Archive: No

SUNDAY MINE COMPLEX-HYDROGEOLOGIC REPORT
CONTENTS
1.0 INTRODUCTION 1
1.1 Purpose 1
1.2 Site Description 1
1.3 Report Data Sources and Organization 2
2.0 PHYSIOGRAPHIC AND CLIMATIC INFORMATION 3
3.0 HISTORIC MINING 4
4.0 GEOLOGY 5
4.1 Regional Geology 5
4.2 Local Geology 9
4.3 Geologic Structure 11
5.0 SURFACE WATER HYDROLOGY 12
6.0 WATER USE 13
7.0 HYDROGEOLOGY 15
7.1 Regional Hydrogeology 15
8.0 SMC HYDROGEOLOGY 21
8.1 Physical Description 21
8.2 Groundwater Occurrence at the SMC 22
8.2.1 Denison Data 23
8.2.2 EFR and PRM Data 25
9.0 MONITORING WELL PROGRAM 26
9.1 Well Installation 26
9.1.1 MW-SUN1 27
9.1.2 MW-SUN2 28
9.1.3 MW-SU N3 29
9.1.4 MW-TPZ1 30
10.0 GROUNDWATER MONITORING 30
10.1 Monitoring Activities 31
10.2 Hydraulic Testing 31
10.2 Water Level Measurement 32
10.2.1 Monitoring Well Water Levels 32
Western Water& Land, Inc. II