Contaminated Land Assessment, Management & Remediation
Ready to move your project forward with confidence?
At Confluence Environmental, our contaminated land consultants deliver science-led environmental site assessments across NSW. Whether you need a preliminary site investigation, a detailed site investigation, or a soil contamination report, our team provides clear, practical advice tailored to your project.
We prepare contaminated land assessments, RAPs (Remedial Action Plans), site validation reports, and CEMP & CEnvP reports — trusted by planners, developers, and councils across Sydney, the Central Coast, Newcastle, and beyond. Every project is led by a Certified Environmental Practitioner (CEnvP) to ensure compliance with EPA and council requirements.
Complete the form below to get a fast quote today, book a consultation, or ask us a question about your project. We’ll respond within 24 hours with expert advice and next steps — helping you stay compliant, reduce risk, and keep your development on track.
A PARTNER YOU CAN TRUST
At Confluence Environmental, we deliver fast, compliant Preliminary Site Investigations that meet council and EPA requirements. With deep regulatory insight and practical experience, we help you uncover risks early, support approvals, and keep your project moving — without delay or confusion.
At Confluence Environmental, we specialise in preliminary site investigations (PSIs), contaminated land assessments, and environmental site assessments across New South Wales. Our contaminated land consultants and environmental consultants NSW provide clear, science-led reporting for developers, planners, councils, and property professionals.
Whether you need a soil contamination report for due diligence, a remediation action plan (RAP) for development approval, or a detailed site investigation (DSI) following a PSI, we deliver regulator-aligned solutions that keep projects compliant and moving forward.
What is a Preliminary Site Investigation (PSI)?
A preliminary site investigation (also known as a Phase 1 Environmental Site Assessment) is the first step in assessing contamination risk. It is a desktop-based review supported by a site walkover and stakeholder consultation. A PSI is used to:
Identify historical and current land uses that may have caused contamination.
Assess potential risks to soil, groundwater, surface water, air, and sensitive receptors.
Provide a contaminated land assessment in line with the Contaminated Land Management Act 1997 and NEPM 2013.
Determine if a detailed site investigation or remedial action plan (RAP) is required.
Why Conduct a PSI?
A PSI is often required by councils, certifiers, and planning authorities for:
Development Applications (DA) and rezoning.
Subdivisions and planning proposals.
Pre-purchase & due diligence before sale or acquisition.
Projects changing to sensitive uses such as childcare, schools, or aged care.
Completing a PSI:
Protects project timelines by identifying risks early.
Provides a regulator-ready soil contamination report.
Prevents costly redesigns or remediation delays.
Builds confidence with planners, financiers, and communities.
Our Environmental Site Assessment Process
Our Sydney enviro consultants and certified environmental practitioners (CEnvP) follow NSW EPA guidelines and national standards. Every PSI includes:
Desktop Review & Data Analysis
Historical aerials, zoning, and planning overlays.
EPA registers, prior reports, and contamination notices.
Dangerous goods licensing and underground storage tank records.
Site Walkover Inspection
Visual evidence of contamination (soil staining, asbestos, waste).
Assessment of structures, drainage, and sensitive nearby land uses.
Stakeholder Consultation
Discussions with owners, tenants, council officers, and planners.
Preliminary Risk Assessment & Reporting
Development of a Conceptual Site Model (CSM).
Identification of contaminants, pathways, and receptors.
Clear conclusions and recommendations — whether a detailed site investigation, RAP, or site validation report is needed.
Additional Contaminated Land Services
Detailed Site Investigations (DSI): Intrusive sampling and testing for contamination.
RAP – Remedial Action Plans: Practical remediation strategies and EPA-compliant reporting.
Site Validation Reports: Certifying that remediation works meet compliance standards.
CEMP & CEnvP Reports: Construction Environmental Management Plans led by a Certified Environmental Practitioner.
Why Choose Confluence Environmental?
Independent, qualified contaminated land consultants with NSW expertise.
Reports prepared by a Certified Environmental Practitioner (CEnvP).
Trusted by planners, developers, and councils — trusted by Sydney planners and beyond.
Fast turnaround, practical recommendations, and transparent pricing.
📞 Get a fast quote today for a preliminary site investigation, contaminated land assessment, or environmental site assessment. Confluence Environmental provides trusted, regulator-ready reporting for compliance, planning, and development across NSW.
Frequently Asked Questions (FAQ):
Q: When is a Preliminary Site Investigation (PSI) required?
A preliminary site investigation is required when:
A Development Application (DA) involves land with a history of potentially contaminating activities.
You are buying or selling commercial, industrial, or agricultural land.
Council or the NSW EPA requests a contaminated land assessment.
You need pre-purchase or due diligence before rezoning or development.
You are preparing for site remediation or validation.
Many NSW councils require a PSI in line with the NSW Contaminated Land Planning Guidelines and EPA protocols.
Q: What happens if contamination is suspected during a PSI?
If a PSI identifies potential contaminants, a Detailed Site Investigation (DSI) may be recommended. A DSI involves:
Soil, groundwater, or vapour sampling.
NATA-accredited laboratory analysis.
A contaminated land assessment of health and environmental risks.
Recommendations for remediation action plans (RAPs) or management.
We clearly outline next steps based on risk level, site conditions, and intended land use.
Q: How long does a PSI take to complete?
Most PSIs can be completed within 2–4 weeks, depending on:
Site size and complexity.
Availability of historical records.
Council or client deadlines.
The urgency of inspections or stakeholder consultation.
Fast-track options are available for planning approvals, transactions, and due diligence.
Q: Does Confluence Environmental complete PSIs for all project types?
Yes. Our contaminated land consultants conduct PSIs for:
Residential subdivisions and dwellings.
Commercial and industrial developments.
Infrastructure, schools, childcare centres, and aged care.
Government and council land.
Each environmental site assessment is tailored to your project, regulatory context, and reporting needs.
Q: How do I know if my site has contamination risks?
Contamination risks are more likely if the site:
Was used for industrial, commercial, or agricultural activities.
Shows evidence of chemical storage, waste disposal, or underground tanks.
Is mapped or flagged as a contaminated land site by council.
Has legacy structures containing asbestos, lead, or hazardous materials.
A PSI is the most effective first step to identify risks and confirm compliance with NSW planning and environmental law.