Clearing and site preparation, water emptying from basins 1 and 2, agitation and mixing of water with sludge and pumping to a mobile dewatering system, cleaning of temporary storage and dewatered sludge areas, demolition of buildings and components of the existing AMTP (Acid Mine Treatment Plant). Construction of the Passive Tank and the Operations and Treatment Building, including site preparation, reinforced concrete structures, standard civil construction works, specialised works, finishes, electrical and electromechanical equipment, CCTV and automation.