Baseline Investigations for Acid Sulfate Soils in Perth

Acid sulfate soils (ASS) are naturally occurring soils and sediments containing iron sulfides, most commonly pyrite. If exposed to air (a consequence of activities like drainage or excavation), the sulfides oxidise to produce sulfuric acid.

This acidification can cause environmental degradation in multiple ways, including:

• The release of heavy metals into waterways

• Soil infertility

• Harm to aquatic ecosystems

To avoid these issues, it is crucial to conduct a baseline investigation to identify ASS before commencing any development.

The Importance of Baseline Investigations

Conducting a baseline investigation is the first step in responsible ASS management. It is a comprehensive assessment to determine the presence, extent and severity of ASS on a proposed development site.

Baseline investigations protect your operation through:

• Risk Mitigation: Early detection of ASS allows for the development of effective management plans, reducing the risk of environmental harm and ensuring compliance with regulations.

• Cost Efficiency: Identifying ASS issues beforehand can prevent any unexpected expenses that will arise from remediation and project delays.

• Regulatory Compliance: Many local governments require ASS assessments as part of their development approval processes. A thorough baseline investigation will meet these requirements.

How West Soil & Water Conducts a Baseline Investigation

At WSW, we offer baseline investigations designed to suit the unique conditions of Western Australia. Our process includes:

1. Preliminary Desktop Assessment: We review existing geological and environmental data to assess the potential presence of ASS in the project area.

2. Field Sampling and Analysis: Our team conducts on-site soil and groundwater sampling, adhering to the guidelines set by the Department of Water and Environmental Regulation (DWER). Samples are analysed to determine pH levels, sulfide content and other relevant metrics.

3. Detailed Reporting: We provide a comprehensive report outlining our findings, including maps of ASS distribution, risk assessments and recommendations for management or remediation where necessary.

Why Choose West Soil & Water?

With over 13 years of experience in environmental consulting across Western Australia, WSW have proven our commitment to delivering accurate and reliable ASS assessments.

Our team will assist your project in complying with environmental regulations and avoiding unforeseen complications related to acid sulfate soils.

Importantly, WSW also creates comprehensive acid sulfate soil management plans and carries out soil treatment. When we conduct a baseline investigation, we can use that information to create a efficient an effective plan for your site.

If you are interested in organising a baseline inspection or any other acid sulfate soil services in Perth, contact WSW at sam@westsoilandwater.com.au or on 0424 021 264.