A Detailed Site Investigation (DSI) is a comprehensive, intrusive site assessment that builds on the findings of a Preliminary Site Investigation (PSI). It involves soil, groundwater, surface water, or air sampling to confirm the presence, type, extent, and concentration of contamination. The results are compared against environmental guidelines to assess potential risks to human health and the environment.
A DSI provides the factual, scientific basis for remediation planning and regulatory approvals. Without a DSI, contamination risks may remain undefined, delaying projects or leading to non-compliance. For developers and landowners, a DSI is the critical bridge between identifying a potential issue and implementing a targeted, cost-effective remediation strategy.
Nova Group Pacific delivers regulator-aligned Detailed Site Investigations that provide defensible, decision-ready data for remediation planning and approvals.
Design and execution of DSIs to delineate contamination in soil, groundwater, surface water, or soil vapour, including development of conceptual site models and risk assessments.
Intrusive investigation programs incorporating soil coring, groundwater sampling, vapour wells, and monitoring well installation to support accurate contamination characterisation.
Collection and analysis of groundwater samples to assess contaminant migration, plume extent, and potential impacts to receptors or offsite environments.
Targeted monitoring to assess contaminant behaviour, temporal variation, and compliance with environmental guideline values.
Preparation of DSI reporting suitable for EPA review, planning approvals, remediation approvals, and audit processes.
Contact us to discuss your project and receive expert guidance tailored to your environmental, planning, and compliance obligations.
Whether you need site assessment, remediation, or environmental consulting, our expert team is here to guide your project from planning to completion with precision and care.
Whether you're early-stage or ready to build, this tool helps you work out what reports you need — and how to bundle them into a single site visit.
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We provide sustainable contaminated land, remediation, and geotechnical consulting services across Australia.
