Remediation & Validation
We manage remediation works from start to sign-off — coordinating contractors, overseeing compliance, and delivering clear validation reports to support project approvals across NSW.
What We Offer
We provide a complete remediation and validation service, covering both the physical execution of works and the technical sign-off process required for regulatory and planning approval.
1. Remediation Project Management & Coordination
We manage all aspects of remediation implementation, ensuring works proceed safely and in accordance with the RAP.
Our services include:
Engaging and coordinating licensed remediation contractors
Preparing or reviewing safe work method statements (SWMS)
Scheduling works to align with DA or construction timelines
On-site environmental supervision to monitor compliance
Coordination with site auditors, councils, and EPA
Waste classification and tracking (VENM, ENM, GSW, hazardous waste)
Whether you’re dealing with hotspots, widespread contamination, or legacy USTs and asbestos — we’ll manage the logistics so you can focus on project delivery.
2. Validation Sampling & Analysis
Once remediation is complete, validation ensures the site is suitable for its intended use.
Our validation services include:
Soil, groundwater, or vapour sampling
Field screening and NATA-accredited laboratory analysis
Confirmation that contaminants are below regulatory criteria
Reporting aligned with the NEPM (ASC 2013) and NSW EPA guidelines
Site-specific validation plans for auditor, council, or EPA review
Support for Site Audit Statements or clearance conditions
We ensure sampling is scientifically robust and accepted by all authorities.
3. Validation Reporting for DA or Audit Sign-Off
We prepare clear, regulator-ready validation reports that document:
The remediation works undertaken
Sampling locations, methods, and QA/QC measures
Laboratory results with comparison to applicable guidelines
Justification that the site is suitable for its intended land use
Any residual risks or long-term management measures
Reports are prepared for submission to councils, planning certifiers, or accredited site auditors, depending on the approval pathway.
Who We Help
We provide remediation and validation support for:
Developers preparing contaminated land for residential or commercial use
Civil and infrastructure contractors managing site preparation works
Town planners and certifiers requiring clearance documentation
Environmental consultants needing implementation support
Government agencies and councils remediating legacy sites
Why Choose Confluence Environmental?
End-to-end support – from RAP to remediation to validation
On-the-ground project coordination and contractor engagement
Clear, defensible validation reports for DA, EPA, or auditor review
Compliance with NSW EPA, NEPM, and planning conditions
Trusted by builders, developers, and environmental professionals across NSW
We make remediation practical, efficient, and regulator-ready — no red tape, just results.
Where We Operate
We deliver remediation and validation services across:
Greater Sydney
Central Coast
Newcastle & Lake Macquarie
Hunter Valley
South Coast, Mid-North Coast, and regional NSW
Need expert advice?
Need help delivering a contaminated land remediation project? We’ll manage the works, coordinate the contractors, and ensure the validation is bulletproof.
Call 0493 042 642 or drop us an enquiry below to speak with a remediation consultant today.
Frequently Asked Questions (FAQ) – Remediation & Validation
Q: What is land remediation?
Land remediation involves the removal, treatment, or containment of contamination to make a site suitable for its intended use — whether that’s residential, commercial, industrial, or open space. It’s typically guided by a Remediation Action Plan (RAP) and overseen by qualified environmental consultants or site auditors.
Q: What is validation in contaminated land projects?
Validation is the process of confirming that remediation has been completed successfully. It involves soil, groundwater, or vapour testing to ensure contaminants are below acceptable levels, followed by a formal validation report that can be submitted to councils, the NSW EPA, or a site auditor.
Q: When is remediation and validation required?
Remediation and validation are required when:
A Detailed Site Investigation (DSI) identifies contamination above guideline levels
The site must be cleared for DA approval, subdivision, or rezoning
A Remediation Action Plan (RAP) has been implemented
Council, EPA, or a Site Auditor requires proof that a site is suitable for use
You’re preparing a contaminated site for sale, redevelopment, or construction
Q: Who manages the remediation process?
A remediation project is typically managed by an environmental consultant, like Confluence Environmental, who coordinates:
Remediation contractors
Site access, scheduling, and oversight
Sampling and testing during and after works
Engagement with regulators or accredited auditors
We ensure remediation is done safely, legally, and in accordance with the approved RAP.
Q: What methods are used to remediate contaminated land?
The remediation method depends on the contaminant type and site conditions. Common approaches include:
Excavation and off-site disposal
On-site soil treatment (e.g. chemical oxidation, bioremediation)
Capping and containment
Groundwater treatment
Removal of underground storage tanks (USTs) or asbestos-containing materials
Q: Who signs off the remediation?
Remediation may be signed off by:
Local councils, if the site is being developed
The NSW EPA, for regulated sites or complex contamination
An Accredited Site Auditor, where required by a condition of consent or for complex sites
We prepare all documentation and coordinate with the relevant authority to obtain approval.