Acid Sulfate Soils (ASS) are naturally occurring and are typically found in low-lying and wetland areas with shallow water tables. Excavation and dewatering of ASS, if not done properly, can give rise to acidification and associated impacts that can severely contaminate soil and groundwater, and limit land uses.
While management processes are conventional, it is important to appropriately characterise, and risk assess sites where ASS are present to achieve the most cost effective and environmentally sound outcome for each project.
Our team of ASS experts have extensive experience across large scale excavation and development projects, linear infrastructure through to basement excavation projects. We are able to achieve timely approvals for pragmatic management, and via our complementary expertise in contracting and treatment, we can devise methods to effectively treat soil and water generated during project construction.
Key Services
- Site investigations, including testing and interpretation of soil, groundwater and sediments
- ASS and groundwater investigation reports to satisfy environmental regulators
- Dewatering drawdown and impact modelling.
- Modelling of soil and dewatering treatment requirements and contracting/treatment costs
- Design of dewatering treatment systems for complex and high-risk projects
- Preparation of ASS and dewatering management plans
- Client-side contractor procurement and audit of contractors
- Soil, groundwater and dewatering compliance monitoring and testing during works
- Preparation of compliance monitoring and closure reports
- Regulator liaison to obtain approvals
Acid Sulfate Soils
Acid Sulfate Soils (ASS) are naturally occurring and are typically found in low-lying and wetland areas with shallow water tables. Excavation and dewatering of ASS, if not done properly, can give rise to acidification and associated impacts that can severely contaminate soil and groundwater, and limit land uses.
While management processes are conventional, it is important to appropriately characterise, and risk assess sites where ASS are present to achieve the most cost effective and environmentally sound outcome for each project.
Our team of ASS experts have extensive experience across large scale excavation and development projects, linear infrastructure though to basement excavation projects. We are able to achieve timely approvals for pragmatic management, and via our complementary expertise in contracting and treatment, we can devise methods to effectively treat soil and water generated during project construction.
Key Services
- Site investigations, including testing and interpretation of soil, groundwater and sediments
- ASS and groundwater investigation reports to satisfy environmental regulators
- Dewatering drawdown and impact modelling.
- Modelling of soil and dewatering treatment requirements and contracting/treatment costs
- Design of dewatering treatment systems for complex and high-risk projects
- Preparation of ASS and dewatering management plans
- Client-side contractor procurement and audit of contractors
- Soil, groundwater and dewatering compliance monitoring and testing during works
- Preparation of compliance monitoring and closure reports
- Regulator liaison to obtain approvals
