| 360 Environmental is able to provide expert advice and regulatory compliance for the identification, assessment and management of Acid Sulphate Soils (ASS), including dewatering in the planning and implementation phases of projects. Acid Sulphate Soils (ASS) are naturally occurring soils containing iron sulfides, commonly pyrite. When these soils are exposed to air during disturbances such as earthworks or dewatering the iron sulfides oxidize causing the production of sulfuric acid. The acid can result in lowering of pH conditions, the release of toxic quantities of iron, aluminum and heavy metals from soil and can be aggressive to buried structural objects. Disturbance to ASS during site earthworks can cause significant environmental damage and requires careful planning and management. The management of ASS in Western Australia is regulated by the Western Australian Planning Commission (WAPC) Bulletin 64 – Acid Sulphate Soils Department of Environment and other government guidelines. 360 Environmental are able to provide expert advice and regulatory compliance for the identification, assessment and management of ASS and for dewatering in planning, construction and the operational phases of projects. Services provided by 360 Environmental include: - Identification of planning, regulatory compliance and approval requirements.
- Detailed field investigations involving assessment of soils and groundwater characteristics.
- Field and laboratory testing of ASS in accordance with recommended guidelines.
- Preparation of ASS Investigation Reports and Management Plans based on project requirements.
- Obtaining regulatory approvals on behalf of our clients for the management of ASS in the planning phase of projects.
- Assessments of the site-specific risks associated with ASS and their potential impediments for proposed developments.
- Liaison with regulatory authorities.
- Provision of advice during construction works for the management of ASS.
- Dewatering Investigation and Management Plans (including modelling and site treatment requirements), monitoring and reporting.
Project Examples Project: Perth Seawater Desalination Plant, Kwinana Client: Water Corporation, Project Management Group
- Preparation of Dewatering Management Plan.
- Implementation of environmental management strategies during dewatering works.
- Liaison with relevant regulators.
- Reporting.
Project: Integration Assets - Pipelines -1200mm from Kwinana to Henderson and 1400mm from Henderson to Armadale Client: Water Corporation, Project Management Group
- Implementation of environmental management strategies associated with acid sulphate soils and dewatering during construction works.
Project: Nicholson Road Pump Station, Armadale Client: Water Corporation, Project Management Group
- Implementation of environmental management strategies associated with acid sulphate soils and dewatering works during construction works.
- Liaison with regulators.
- Monitoring and management of adjacent wetland
Project: Belgravia Central Residential Subdivision Bertram Client: Satterley Property Group (on behalf of DHW)
- Acid Sulphate Soils investigation over multiple stages of the development.
- Compilation of Acid Sulphate Soils Management Plans.
- Preparation of Dewatering Management Plan.
- Groundwater modelling.
- Implementation of environmental management strategies during earthworks and dewatering works, including validation sampling and analysis
- Compilation of Closure reports for submission to the regulator.
- Liaison with relevant regulators.
Project: Lot 53 Johnson Road, Residential Subdivision, Bertram Client: Satterley Property Group (on behalf of DHW) - Acid Sulphate Soils investigation over multiple stages of the development.
- Compilation of Acid Sulphate Soils Management Plans.
- Preparation of Dewatering Management Plan.
- Groundwater modelling.
- Implementation of environmental management strategies during earthworks and dewatering works, including validation sampling and analysis
- Compilation of Closure reports for submission to the regulator.
- Liaison with relevant regulators.
Project: Lot NewGen Kwinana Power Station Client: NewGen Power / Alstom - Preparation of Dewatering Management Plan, including groundwater modelling.
- Procurement of groundwater abstraction licence.
- Environmental monitoring during dewatering works.
- Compilation of Closure reports for submission to the regulator.
- Liaison with relevant regulators.
Project: Neerabup Power Station Client: ERM Power - Acid Sulphate Soils investigations
- Compilation of Acid Sulphate Soils Management Plan
Project: Western Australian Airports Corporation Client: Western Australian Airports Corporation - Acid Sulphate Soils investigation for a major services upgrade at the Perth Airport
- Compilation of Acid Sulphate Soils Management Plan
Project: Burtonia Gardens Residential Estate, Forrestdale Client: Toplevel Enterprises - Acid Sulphate Soils investigation over multiple stages of the development.
- Compilation of Acid Sulphate Soils Management Plans.
- Preparation of Dewatering Management Plan.
- Implementation of environmental management strategies during earthworks and dewatering works, including validation sampling and analysis.
- Compilation of Closure reports for submission to the regulator. Liaison with relevant regulators.
Project: Falkingham Road, Busselton Redevelopment Client: Department of Housing and Works - Acid Sulphate Soils investigation across the proposed development site.
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