Geochemistry

Mining and Waste Geochemistry

Sefcom Environmental Consulting (SEC) delivers advanced geochemical assessment services to support responsible resource development, mine water management, regulatory compliance, and long-term environmental stewardship.

Our expertise spans the full mining lifecycle, from exploration and feasibility through operations and closure, with particular specialisation in Acid Rock Drainage (ARD), Acid Mine Drainage (AMD), and mine waste geochemistry. We support projects across base and precious metals, coal, lithium, iron ore, mineral sands, and industrial minerals.
SEC integrates laboratory testing, field investigations, geochemical modelling, and data-driven risk analysis to develop defensible, regulator-ready solutions for complex geochemical challenges.

Geochemical Assessment Services:

Acid Rock Drainage & Mine Waste Geochemistry

• Acid–Base Accounting (ABA)
• ARD/AMD risk assessments and management strategies
• Static and kinetic leach testing (including humidity cell testing)
• Waste characterisation and classification

Contaminant & Metal Management

• Arsenic management and treatment strategies
• Cyanide management plans
• Hydrocarbon impact assessments and monitoring
• DNAPL and LNAPL site characterisation
• Vapour plume surveying within the unsaturated zone

Water & Tailings Geochemistry

• Geochemical reaction modelling
• Tailings treatment and water management strategies
• Water treatment options analysis and pilot/field trials
• Leachate characterisation and contaminant mobility assessment

Remediation & Closure Planning

• Hydrocarbon remediation strategy development
• Long-term geochemical stability assessments
• Closure risk evaluation and mitigation planning
• Predictive geochemical modelling for post-closure performance