Proposed Limpopo West Mine Concept Study ... - SRK Consulting

SRK Consulting: 447493: Limpopo West Geochem Page 30Figure 5-6: Ficklin metal concentrations against contact leach pHAt circumneutral to alkaline pH condition, the mobility of metals is a limited. However, the followingmetals are likely to be mobilised under neutral to alkaline conditions Al, Fe, Sr and to some extentZn.5.3.4 Pit WaterMonitoring of the existing pit lake quality of the Bulk Sample pit which is located in the central area iscurrently undertaken by Sasol on a monthly basis. were assumed to be representative of the pit lakewater quality periodically filling the exiting pit The monitoring l results were provided to SRK by Sasoland are presented in Table 6 4. The highlighted cells indicating exceedance relative to SANS241:2011 water quality guidelines. The following inferences were drawn from Table 6 4:The pit water is neutral to slightly alkaline,Alkalinity ranges from 109 mg/l to 543 mg/l,TDS ranges from 396 mg/l to 1 404mg/l, andAluminium, nitrite, Sodium and TDS exceed the SANS 241:2011 water quality guidelinesGOGP/LAKJ Report_April2013_19April2013 (1)_Final_Ludi_22052013 April 2013