Ontario's Excess Soil Rules (O. Reg. 406/19): What Builders Need to Know
Every excavation produces more soil than goes back in the hole. For decades, that 'excess soil' moved around Ontario with almost no oversight — and some of it ended up dumped on farmland and in places it never should have been. Ontario Regulation 406/19, fully in force since 2023, changed that: excess soil is now tracked, tested and placed under rules.
What the regulation means on a real project
- Soil is characterized before it moves: depending on the site's history, sampling and testing may be required to confirm quality.
- Destination matters: soil can be reused at sites that need it, but the receiving site must be able to accept that quality and quantity — and the movement is documented.
- Contaminated soil is a different stream entirely: it goes to licensed facilities, with paperwork to match.
- The project leader carries responsibility: owners and builders can't contract away the duty to manage soil properly.
Why it shows up in your excavation quote
Testing, documentation, longer hauls to approved receiving sites and licensed disposal for hot loads all cost money — which is why two quotes for the same dig can differ by thousands. A quote that's silent about soil is a quote that will grow. Ask where the soil is going and what's included for testing and trucking before you sign anything.
The upside
Done properly, the system is genuinely better: clean soil gets reused as a resource instead of landfilled, receiving sites get material they actually need, and nobody's project becomes a headline. It's also a differentiator worth hiring for — an excavation contractor fluent in 406/19 keeps your project compliant from the first bucket.
Soil questions on your project?
51 Excavation handles excess soil the compliant way — assessed, documented and hauled to approved destinations, so your project never inherits a dumping problem.
