model development , phreeqc , Sensitivity assessment, Pit lake seepage groundwater or surface water quality prediction, Mine closure water quality assessment, Technical Writing, Water quality modelling, FEFLOW, Environmental approvals support, Geochemist’s Workbench, Validation, Waste rock and tailing geochemistry, Technical review, Hydrogeochemical interpretation, Geochemical assessment, Calibration, Mine water quality prediction, Data interpretation, Static and kinetic geochemical characterization, MIN3P, Quality Control, Geochemical assessment of mine materials, Gold Sim, modflow