2 Otjikoto Final EIA Report 5MB - Asecnam.com

SLR Namibia (Pty) Ltd
SLR Ref.733.01023.0002
Report No.1
Page iii
4.11.2 NOISE SENSITIVE DEVELOPMENTS ........................................................................................................... 4-84
4.11.3 CURRENT ENVIRONMENTAL SOUND CHARACTER ....................................................................................... 4-84
4.11.4 SUMMARY .............................................................................................................................................. 4-86
5 PROJECT DESCRIPTION ................................................................................................................. 5-1
5.1 INTRODUCTION............................................................................................................................... 5-1
5.2 CONSTRUCTION PHASE .................................................................................................................. 5-1
5.2.1 CONSTRUCTION FACILITIES ........................................................................................................................ 5-1
5.2.2 CONSTRUCTION ACTIVITIES ....................................................................................................................... 5-4
5.2.3 TOPSOIL MANAGEMENT ............................................................................................................................. 5-4
5.2.4 CONSTRUCTION TRANSPORT ..................................................................................................................... 5-4
5.2.5 EMPLOYMENT AND HOUSING ...................................................................................................................... 5-9
5.2.6 WATER SUPPLY FOR CONSTRUCTION ACTIVITIES ......................................................................................... 5-9
5.2.7 POWER SUPPLY FOR CONSTRUCTION ACTIVITIES ......................................................................................... 5-9
5.2.8 SANITATION FOR CONSTRUCTION ............................................................................................................... 5-9
5.2.9 MEDICAL SERVICE .................................................................................................................................... 5-9
5.2.10 FIRE PROTECTION .................................................................................................................................. 5-10
5.2.11 NON-MINERALIZED WASTE MANAGEMENT FOR CONSTRUCTION ................................................................... 5-10
5.2.12 CONCURRENT MINING OPERATIONS ......................................................................................................... 5-11
5.3 OPERATIONAL PHASE ................................................................................................................... 5-11
5.3.1 SITE FACILITIES FOR OPERATIONS ............................................................................................................ 5-11
5.3.2 OPERATION PHASE ACTIVITIES – MINING .................................................................................................. 5-13
5.3.3 OPERATION PHASE ACTIVITIES – MINERAL PROCESSING ............................................................................ 5-14
5.3.4 MINERALIZED WASTE FACILITIES .............................................................................................................. 5-21
5.3.5 WATER MANAGEMENT FACILITIES ............................................................................................................ 5-30
5.3.6 POWER SUPPLY FOR OPERATIONAL ACTIVITIES ......................................................................................... 5-34
5.3.7 AIR REQUIREMENTS – PROCESS PLANT .................................................................................................... 5-34
5.3.8 FUEL SUPPLY ......................................................................................................................................... 5-34
5.3.9 EMPLOYMENT AND HOUSING .................................................................................................................... 5-35
5.3.10 SEWERAGE COLLECTION AND TREATMENT ................................................................................................ 5-35
5.3.11 NON-MINERALISED WASTE MANAGEMENT FOR THE OPERATION PHASE .......................................................... 5-35
5.3.12 ADDITIONAL SITE FACILITIES ..................................................................................................................... 5-37
5.3.13 TIME TABLE ............................................................................................................................................ 5-42
5.4 DECOMMISSIONING AND CLOSURE PHASE ...................................................................................... 5-42
5.4.1 CLOSURE OBJECTIVES ............................................................................................................................. 5-42
5.4.2 DECOMMISSIONING ACTIVITIES ................................................................................................................. 5-43
5.4.3 CLOSURE ACTIVITIES ............................................................................................................................... 5-44
6 ALTERNATIVES ................................................................................................................................ 6-1
6.1 CURRENT AND FUTURE LAND USED ALTERNATIVES ........................................................................... 6-1
6.2 THE “NO PROJECT OPTION LINKED TO NEED AND DESIRABILITY ....................................................... 6-1
6.3 TECHNICAL ALTERNATIVES FOR MILLING ......................................................................................... 6-1
6.4 POWER REQUIREMENTS ................................................................................................................. 6-2
7 ENVIRONMENTAL IMPACT ASSESSMENT .................................................................................... 7-1
7.1 INTRODUCTION ............................................................................................................................... 7-1
7.2 TOPOGRAPHY ................................................................................................................................ 7-4
7.2.1 ISSUE: SURFACE EXCAVATIONS AND INFRASTRUCTURE ................................................................................. 7-4
7.3 SURFACE WATER ........................................................................................................................... 7-6
7.3.1 ISSUE: ALTERING DRAINAGE PATTERNS ........................................................................................................ 7-6
7.3.2 ISSUE: IMPACTS ON SURFACE WATER QUALITY ............................................................................................. 7-6
7.4 GROUNDWATER ............................................................................................................................. 7-9
7.4.1 ISSUE: DEWATERING OF MINE PIT AND WATER SUPPLY ................................................................................... 7-9
7.4.2 ISSUE: IMPACTS ON GROUNDWATER QUALITY ............................................................................................. 7-12
7.5 AIR .............................................................................................................................................. 7-15
7.5.1 ISSUE: AIR POLLUTION ............................................................................................................................. 7-15
7.6 NOISE AND VIBRATION .................................................................................................................. 7-19
7.6.1 ISSUE: NOISE POLLUTION ......................................................................................................................... 7-19
Otjikoto Gold Mine EIA Report July 2012