Buying the Gas Station She Managed, Without Buying Its Past

The situation

Genevieve had kept the books for a small Owen Sound gas station for nine years. She knew the fuel margins, the slow winter months, the regulars who came in for coffee before the highway shift, and the owner, Kajan, who had built the business from a single pump station into a full-service stop with a convenience store attached. When Kajan told her he was ready to retire, he offered her first chance at buying him out. Genevieve's partner, Etienne, worked as a security guard and had spent years wanting to run something of his own. Together they had modest savings and a plan: buy the business, keep the staff, keep the name on the sign, and finally own something instead of managing it for someone else.

The purchase price they agreed on with Kajan sat in the middle of what a business like this typically sells for, reflecting the fuel inventory, the equipment, the store's goodwill, and the underlying value of the pumps and underground tanks that made the station worth more than an ordinary convenience store. Genevieve and Etienne came to Treadstone Law before signing anything, wanting to understand what they were actually buying.

The legal problem

Gas stations carry a category of risk that most small business purchases do not: what is buried underground. Fuel is stored in underground storage tanks, and older tanks corrode, develop small leaks, or were installed decades ago to standards that no longer apply. Petroleum hydrocarbons that leak into soil and groundwater do not stay put, and cleaning them up can cost far more than the business itself is worth. Ontario's environmental protection laws place responsibility for contaminated land on whoever owns or controls it at the time contamination is discovered — not necessarily whoever caused it. That meant if Genevieve and Etienne bought the property and contamination surfaced later, the province could look to them for remediation regardless of who ran the pumps when the leak happened.

Our team advised them, before they signed a firm agreement, that a purchase like this needed environmental due diligence: a professional assessment of the site's history and soil condition, done before closing, not after. Kajan's asking price assumed a clean site. Genevieve and Etienne needed to know whether that assumption was true.

We arranged for an environmental consultant to complete a Phase I environmental site assessment — a records and history review covering old fuel deliveries, prior tank replacements, any past spills reported to the province, and aerial photos going back to when the property was first used as a fuel station. The Phase I flagged exactly the kind of history that warrants a closer look: the station's original underground tanks, installed well before current standards, had been replaced only once, roughly fifteen years earlier. That gap left years unaccounted for during which an older tank system had been in the ground. On the strength of that finding, the consultant recommended a Phase II assessment — actual soil and groundwater sampling around the tank field.

The Phase II results came back showing petroleum hydrocarbon contamination in the soil near the old tank pit, consistent with a slow historic leak rather than anything recent. The estimated cost to remediate — excavating and disposing of the affected soil and confirming the surrounding area was clean — came in at roughly $90,000, a serious sum against a business purchase in the low-to-mid hundreds of thousands.

What we did

1. Built environmental diligence into the agreement before results came back. Our team had made the purchase conditional on a satisfactory Phase I and, if warranted, Phase II environmental assessment. This gave Genevieve and Etienne a contractual right to walk away or renegotiate if testing turned up contamination, rather than discovering the problem after they were already bound to close.
2. Quantified the problem instead of treating it as a deal-breaker. A positive contamination finding does not have to end a purchase. Once the consultant's remediation estimate came in, we treated the roughly $90,000 figure as a known, priced risk rather than an open-ended liability, which turned the negotiation from a question of whether to proceed into a question of who pays.
3. Negotiated an indemnity allocating the historic contamination to the seller. An indemnity is a contractual promise by one party to cover a specific loss suffered by the other. We negotiated a clause under which Kajan, as seller, agreed to bear the cost of remediating contamination that existed before closing, since it predated Genevieve and Etienne's ownership and Kajan had operated the site throughout the period the older tanks were in use.
4. Secured the indemnity with an escrow holdback rather than a bare promise. A seller's promise to pay later is only as good as the seller's ability and willingness to pay when the bill arrives. We arranged for roughly $95,000 of the purchase price — the estimated remediation cost plus a modest buffer — to be held back by a third party at closing instead of paid to Kajan, to be released to cover actual remediation invoices, with any unused balance returned to Kajan once the work was confirmed complete.
5. Set out the remediation process and timeline in writing. The agreement specified that Kajan would engage and pay the environmental consultant to complete the excavation and disposal work within a defined period after closing, with Genevieve and Etienne given the right to approve the contractor and confirm the site was certified clean before the holdback funds were released.
6. Reviewed the underground tank registration and insurance position separately. Alongside the contamination question, we confirmed the station's current tanks were properly registered and that Genevieve and Etienne's business insurance would cover pollution liability going forward, so a future leak from the newer system would not leave them personally exposed the way an undisclosed historic one might have.

The outcome

The deal closed roughly ten weeks after the Phase II results came back, later than Genevieve and Etienne had originally hoped but well within the range typical for a business purchase that turns up a genuine environmental finding. Kajan's remediation contractor excavated and disposed of the contaminated soil, and follow-up testing confirmed the site met the applicable standard for continued fuel storage use. The escrow holdback covered the full cost, with a small balance released back to Kajan once the consultant signed off.

Genevieve and Etienne took over the business owning exactly what they had agreed to buy: a working gas station and convenience store, with a documented clean environmental record and no inherited liability for decades of fuel storage that happened before either of them had anything to do with the site. Genevieve kept the same staff on, Etienne left his security job to run the store day to day, and the sign out front stayed the same. The contamination that could have quietly become their problem instead became a resolved item in the closing file, paid for by the party who had owned the site when it occurred.

The case worked out cleanly, but only because the environmental condition was made part of the deal in writing before anyone signed a firm agreement. Had Genevieve and Etienne bought the business on a handshake and a walk-through, as small business sales sometimes happen, the contamination would likely have surfaced eventually — during a future tank replacement, a property sale, or a routine regulatory inspection — and by then it would have been squarely their liability to fix, with no seller left in the picture to share the cost.

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