Contamination Remediation & Environmental Works

Responsible remediation, regulatory compliance, and site recovery — from risk to readiness.

We safely remove, stabilise, and manage contaminated materials in full alignment with EPA protocols, RAPs, and TfNSW environmental specs — delivering clean, compliant sites that are ready for development.

Service Highlights

At Sivil Co., we don’t just dig — we deliver engineered site preparation that’s safe, efficient, and aligned with project specifications. Whether you're preparing for roads, footpaths, tanks, or utilities, we bring the tools, skills, and compliance mindset to get your project started on solid ground.

Contaminated Fill Removal & Disposal

Excavation and transport of classified contaminated materials to licensed EPA facilities, following all relevant waste handling protocols.

Validation Sampling & Reporting

Soil and groundwater sampling with laboratory analysis and full reporting for compliance and regulatory approvals.

On-site Encapsulation & Capping

Containment of low-risk materials through engineered capping or cell construction under approved RAPs.

Acid Sulfate Soil Management

Treatment and management of ASS in estuarine and floodplain areas — including lime dosing and spoil controls.

VENM/ENM Placement

Import, placement, and compaction of clean fill (VENM or ENM) in accordance with TfNSW QA Spec R44.

Environmental Monitoring & Compliance

Dust, runoff, vibration, and ecological monitoring as required under DAs and EMPs for high-risk or sensitive zones.

Environmental performance isn’t optional — it’s fundamental.

At Sivil Co., we offer precise, fully compliant remediation and environmental works across urban and sensitive zones. From contaminated fill removal to acid sulfate soil treatment and regulated VENM/ENM placement, we manage the risks below the surface so your project can proceed with confidence.

Built to Code. Delivered with Precision.

Remediation and environmental works require strict adherence to legislation and best practice. Sivil Co. follows EPA guidelines, TfNSW QA Specs, and RAPs to ensure environmental safety and compliance at every stage. We provide full QA packs with validation data, disposal dockets, and monitoring reports to satisfy your approval conditions.

EPA Waste Classification & Disposal

Validation sampling and lab reporting

RAP-compliant encapsulation or capping

Acid sulfate soil treatment and neutralisation

Clean fill placement per TfNSW R44

Environmental monitoring and EMP delivery

Why it matters?

Contamination can delay construction, impact health, and trigger costly non-compliance. We remove the risks — environmentally, legally, and structurally — to deliver clean, compliant ground you can build on.

EPA-Compliant Waste Handling

All materials are classified, handled, and disposed of following strict EPA protocols — no shortcuts.

Site Safety & Environmental Care

We implement erosion control, dust suppression, and runoff protections from start to finish.

Tested, Validated, and Reported

Full documentation with lab reports and validation data ensures RAP, DA, and regulator sign-off.

Clean Fill with Proven Source

We source and place VENM/ENM fill that meets TfNSW specs — safely building back better.

Our Process

From risk identification to remediation and validation — we manage the full environmental workflow.

Step 1

Site Assessment

Review of RAPs, soil reports, and environmental risks

Step 2

Contaminated Fill Removal

Excavation, transport, and EPA-licensed disposal

Step 3

Validation Sampling

Lab testing and QA documentation

Step 4

On-Site Treatment or Fill Import

Encapsulation or VENM/ENM placement

Step 5

Environmental Monitoring & Reporting

Final testing, sign-offs, and report delivery

LET’S CLEAN UP THE GROUNDWORK

Facing contaminated soil, acid sulfate risk, or environmental uncertainty? Sivil Co. brings clarity, safety, and precision to every remediation job — so you can move forward with confidence.

Frequently Asked Questions (FAQs)

Not sure if you need remediation or just clean fill? Confused by EPA classifications? Here are the answers to the questions clients ask before starting environmental works.

1. How do I know if I have contaminated fill?

We assess soil test results and can arrange validation sampling to determine classification under EPA protocols.

2. Do you provide disposal certificates and QA reports?

Yes — every load of contaminated fill is tracked, documented, and certified with licensed facility receipts and reports.

3. Can you work in sensitive or coastal flood zones?

Yes. We have experience managing ASS and environmental controls in regulated and estuarine areas.

4. What’s the difference between VENM and ENM?

VENM is clean virgin material with no manmade contamination. ENM is excavated natural material that meets physical and chemical criteria for reuse. We handle both.