What Is Contaminated Soil Removal and Why Toronto Sites Need It
Contaminated soil removal is the regulated excavation and off-site haul of impacted soil (petroleum, heavy metals, salt, PFAS, PCBs) under Ontario Regulation 406/19 (On-Site and Excess Soil Management). The regulation applies to every GTA project generating more than one cubic metre of excavated soil, and it requires source site registration, soil characterization sampling under ASTM D1586, a waste manifest for every truck load, and delivery to an MECP-licensed receiving facility.
Hydrovac is the preferred method for contaminated soil work on sites under 500 cubic metres because the sealed debris tank eliminates stockpile liability, cross-contamination of clean soil and worker exposure during handling. Every load travels directly from the dig to the receiving facility without an intermediate transfer step. For brownfield redevelopments, Phase II Environmental Site Assessments, underground storage tank removals, salt-impacted roadside recovery and emergency spill response, hydrovac contaminated soil removal is the method that keeps your project insurable.
Why conventional excavation falls short on contaminated sites
A backhoe or excavator working impacted soil creates three liability vectors conventional work cannot resolve: an open stockpile that leaches with rain, a tandem dump load that leaves manifest trace evidence on tires and gates, and worker exposure during transfer between buckets, piles and trucks. Hydrovac eliminates all three by moving soil directly into a sealed tank with no handling touch-point in between.
When You Need Contaminated Soil Removal Instead of Standard Excavation
If any of these signals apply to your Toronto project, you need a hazmat-rated hydrovac crew with O. Reg. 406/19 documentation, not standard excavation:
- Phase I ESA flags historical fuel storage, dry cleaning or industrial activity. Any site that was ever a gas station, dry cleaner, truck yard, auto body shop or manufacturing site has a high probability of petroleum, chlorinated solvent, heavy metal or PCB impact that requires characterization before excavation.
- Soil sampling exceeds O. Reg. 153/04 Table 1-9 limits. When lab results come back above the applicable table limit, the soil becomes legally classified as excess soil requiring regulated handling and MECP-licensed disposal.
- Underground storage tank is being removed. Every GTA residential and commercial UST removal (home heating oil, gasoline, diesel) requires soil clearance around and under the tank by a hazmat-trained crew before the TSSA extraction.
- Spill event has occurred. Petroleum spills, hydraulic fluid releases, fuel tanker rollovers and industrial site releases require immediate recovery with manifest documentation to the MECP spill action centre.
- Phase II ESA requires confirmatory excavation. Environmental consultants running Phase II ESA closure need volume-coordinated excavation that matches their QP sampling plan with sample integrity preserved through the dig.
Phase II ESA Workflow: How Hydrovac Fits the Environmental Consultant’s Plan
A typical Phase II Environmental Site Assessment runs through five stages that hydrovac contaminated soil removal supports at every step:
- Historical review and Phase I ESA. The Qualified Person documents prior site use and probable contaminant classes.
- Site characterization sampling. ASTM D1586 split-spoon or hand-auger samples are collected and tested against O. Reg. 153/04 Table 1-9 limits.
- Risk assessment and remediation plan. If sample results exceed table limits, the QP develops a remediation plan with target excavation volumes.
- Confirmatory excavation and sampling. Hydrovac removes impacted soil volumes per the remediation plan, with the QP collecting confirmatory samples from the exposed sidewalls and base after removal.
- Closure report. The QP consolidates sample results, manifests, receiving-site acceptance letters and soil balance into a closure report submitted to MECP (or filed for future reference).
We work with environmental consultants across the GTA, coordinating excavation volumes with sampling schedules so sample integrity is preserved. Our rate card is published separately from the consultant’s professional fees so there is no ambiguity about billing responsibility.
Toronto Compliance We Work Under
Every contaminated soil removal follows Ontario Regulation 406/19 (On-Site and Excess Soil Management Regulation) in effect since January 1, 2022, including Source Site Registry entries for sites exceeding 2 cubic metres and Soil Characterization Reports for sites exceeding 100 cubic metres. Soil quality standards reference Ontario Regulation 153/04 Table 1-9 limits. Worker protection follows Ontario Regulation 213/91 for construction excavation plus hazmat protocols. Confined space work follows CSA Z1006 confined space standard. Truck tanks are TSSA pressure vessel compliant. We carry $5M commercial general liability, $2M property damage and $2M environmental impairment liability coverage, with full WSIB coverage for every crew member.
How Long Does Contaminated Soil Removal Take? GTA Production Rates
A standard petroleum-impacted dig of 30-50 cubic metres runs 1-2 days with a single Vactor 2100i and hazmat crew. A brownfield redevelopment of 150-300 cubic metres runs 4-7 days with staged truck turnovers to the receiving facility. Hazardous waste work (heavy metals, PCBs) runs slower because of additional sampling, documentation and routing: expect 50-70% of the production rate of standard petroleum work for the same volume.
Phase II ESA confirmatory digs are coordinated with the consultant’s sampling schedule and typically run 1-3 days with the QP on site for sample collection between excavation stages. Underground storage tank removal preparation runs 1-2 days per tank location, with soil clearance around and under the tank completed before the TSSA-regulated extraction begins the following day. Everytime we quote hours on a contaminated soil job, those numbers are what we work from.
Receiving-Site Disposal: What Happens to the Soil
Impacted soil travels from the dig to one of three MECP-licensed receiving facility types matched to the contaminant class and concentration:
- Soil Management Site for clean fill or soil meeting O. Reg. 153/04 Table 1 limits. Lowest tipping fee tier, typically $45-$75 CAD per cubic metre.
- Class 2 Waste Facility for petroleum-impacted material and salt-impacted soil exceeding Table 1 but below hazardous waste thresholds. Mid-tier tipping fee, typically $120-$185 CAD per cubic metre.
- Hazardous Waste Facility for heavy metals, PCBs, PFAS and any material exceeding Schedule 1 hazardous waste limits. Highest tipping fee tier, typically $185-$285 CAD per cubic metre with additional analytical requirements.
Our crew holds active accounts at 8 MECP-licensed receiving facilities across the GTA covering all three tiers. The receiving-site acceptance letter and tipping fee land on your invoice as separate line items so you can verify the match between the lab report, the manifest and the facility class.
