Who removes a buried Calgary oil tank?

Buried oil tank removal in Calgary is handled by environmental contractors specializing in underground storage tank (UST) remediation — this is not a job for a general contractor or landscaper. You need a firm with specific environmental expertise and the right equipment.

Who Does This Work?

The companies you're looking for are typically called environmental contractors, remediation contractors, or UST (underground storage tank) removal specialists. In Calgary, several firms specialize in residential oil tank removal and soil remediation. You can find them listed in our directory at the Calgary Construction Network.

When hiring, confirm the contractor:

• Holds a valid Alberta Environment registration or works under a qualified Environmental Professional (EP) — typically a P.Eng. or P.Geo. registered with APEGA


• Carries adequate liability insurance (minimum $2M, ideally $5M for environmental work)


• Has WCB Alberta coverage for their workers (verify at wcb.ab.ca)


• Provides a Phase II Environmental Site Assessment (ESA) or at minimum soil sampling after tank removal

What the Process Looks Like

A typical residential oil tank removal in Calgary involves excavating the tank (usually by hand-digging or mini-excavator), draining and cleaning any residual fuel, cutting and removing the tank, and collecting soil samples from the excavation pit. Those samples are sent to an accredited lab to test for petroleum hydrocarbons (PHCs). If the soil is clean, the pit is backfilled and you're done. If contamination is found, remediation (soil removal and disposal at an approved facility) is required — and costs climb significantly.

Alberta Environment and Protected Areas sets the standards for petroleum hydrocarbon contamination under the Alberta Tier 1 and Tier 2 Guidelines for Soil and Groundwater Remediation. Your contractor must follow these guidelines and may need to file documentation with the regulator depending on the extent of contamination found.

Calgary-Specific Context and Costs

Typical residential oil tank removal costs in Greater Calgary:

• Clean removal (no contamination): $2,500 – $5,000
• Minor contamination (some soil removal): $5,000 – $15,000
• Significant contamination (extensive remediation): $15,000 – $50,000+

Factors that drive cost up include tank depth, access constraints, tank size (500–1,000 gallon tanks are most common in Calgary homes), and how far contamination has spread. Calgary's clay soils can actually contain contamination somewhat, but they also make excavation harder and more expensive.

Important for real estate transactions: If you're buying or selling a home with a buried oil tank, most lenders and buyers will require proof of removal and a clean environmental report. Undisclosed tanks can kill deals and create significant liability under Alberta's environmental legislation.

Your Next Steps

Get two to three quotes from qualified environmental contractors — prices vary considerably. Ask each one specifically whether soil sampling and a written report are included in their quote, or if those are extra. A reputable contractor will pull any required permits with the City of Calgary and provide you with documentation you can keep on file for future property sales.

Browse environmental and remediation contractors in our directory at Calgary Construction Network to find vetted local specialists.