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Disposal

Clean fill vs contaminated soil: what can go where?

The moment soil leaves your site it stops being dirt and becomes regulated waste. Getting the category wrong can stop a job. Here are the basics.

Plain-English guideVictorian specs & unitsUpdated June 2026
Quick answer

In Victoria, excavated soil is classified before it can move, from fill material (clean, lowest risk) up through Category C, B and A as contamination rises, with separate streams for asbestos and PFAS.

The category decides where the soil can legally go and what disposal costs. Classify before you dig: a soil report up front is far cheaper than a stopped job at the gate.

Why soil becomes "waste"

Under Victoria’s Environment Protection framework, soil that leaves the site it came from is industrial waste, and waste has to be characterised before it is transported. The aim is simple: keep contaminated material out of places that cannot safely receive it. The practical effect is that you cannot just send a truck of spoil to the nearest hole.

This is general information, not a compliance assessment. Classification is done from sampling and lab results by suitably qualified people, against the current EPA framework. Use this to understand the landscape, then get proper advice for your site.

The categories, simply

Rising contamination, rising cost
TierRoughly meansWhere it goes
Fill materialClean, inert, lowest riskApproved fill receivers (still needs paperwork)
Category CLow-level contaminationLicensed landfill cells rated for it
Category BHigher contaminationHigher-rated licensed cells
Category AHighest contaminationSpecialist, highest-rated facilities
Asbestos soilContains asbestosIts own licensed stream
PFAS / acid sulphateSpecialist contaminantsSpecialist treatment and receival

Category names and thresholds are set by the EPA and change over time. Always classify to the current framework for your project.

Tracking and where it can go

Categorised soil is priority waste. Its transport is tracked through the EPA’s electronic system, and only licensed facilities can receive it. "Mixed fill" in practice usually means clean fill with minor inert mixings like brick and concrete, and tips price it differently from clean fill, so do not let the terms blur on a docket.

01Classify first. A soil report before excavation tells you the category and the cost, and avoids surprises.
02Reuse on site where you can. Soil reused on the site it came from, or under an EPA declaration, can avoid the disposal chain.
03Flag the nasties early. Asbestos, PFAS and acid sulphate soils have specialist pathways; raise them at the planning stage, not at the gate.
04Keep the paperwork. Tracking records and receipts are what prove the soil went where it should.

How we help

We manage disposal and recovery across all of these streams, including classification support, cartage and licensed receival, with the documentation to match. If you are not sure what you are dealing with, classify first and dig second, and talk to us early. See our material disposal and recovery range.

Soil to move? We know the compliant route.

NXT Quarry manages disposal from clean fill to CAT, asbestos and PFAS, with classification support and tracked cartage. Tell us what you have.