As mentioned in the main SEIA report, three specific components of Rössing's expansion project are the subject of the present impact assessment: a sulphuric acid plant, sulphur storage and transport facilities; a radiometric ore sorter plant and associated waste rock disposal site; mining of the SK4 ore body and waste rock disposal. The projects listed above are referred to as Phase 1 projects and the purpose of this report is to describe their impact on water management aspects, especially water use, runoff and groundwater quality.