You need contractors pollution liability, usually at a $1,000,000 to $5,000,000 limit, built for leaking tanks and the soil around them. You also need general liability, workers comp, and commercial auto, but the tank work is what your pollution policy is for. Who this is for: contractors who pull underground fuel or oil tanks out of the ground.
The short version
- Your general liability policy excludes pollution. A leaking tank and the contaminated soil around it are usually not covered.
- Contractors pollution liability pays those claims, but check whether contamination that was already there before you started is covered, since many policies limit or exclude pre-existing contamination.
- Some states have their own financial responsibility rules for tank work, so ask your broker what your state requires before you bid a job.
- If you haul the tank or the contaminated soil yourself, ask about coverage for pollution during transport and coverage for the disposal site, since those are usually separate.
- Illustrative cost for a small tank removal firm is about $5,000 to $12,000 a year at a $1,000,000 limit.
What can go wrong pulling a tank out of the ground?
A tank that has held fuel or oil for decades rarely comes out clean. Here is what turns a routine removal into a claim.
| What happened | What follows | General liability pays? |
|---|---|---|
| The tank has been leaking for years before you touch it | Soil and groundwater around it are contaminated | Usually no |
| The tank cracks or a fitting fails during removal | Fresh fuel or oil spills at the job site | Usually no |
| Contaminated soil is trucked to a landfill that is later found unsuitable | You are named in the cleanup | No, and most pollution policies need a separate part for this |
| Vapors migrate into a nearby building's basement | The building owner claims injury and property damage | Usually no |
| You backfill and close the site, and contamination is found later | You are called back years after the job ended | Usually no on a policy that does not cover finished work |
Why doesn't my general liability policy cover a leaking tank?
Because nearly every general liability policy has a pollution exclusion. It removes claims for injury, damage, or cleanup tied to a pollutant released where you work. Fuel and oil count as pollutants whether they leaked before you arrived or during your work. The standard form gives back one thing: fuel that leaks from your own equipment, not the tank you are removing. Many contractor policies also add a total pollution exclusion, a page that removes even that small give-back.
Does my pollution policy cover contamination that was already there?
This is the question that trips up tank removal contractors most. Contractors pollution liability is coverage for fumes, dust, spills, or mold caused by your work. Most policies cover pollution your work causes going forward, not contamination that existed before you showed up. Pre-existing contamination is often excluded, or covered only up to a much smaller limit. If the site has a known history of leaks, tell your broker before the job starts. Some insurers will quote limited coverage for pre-existing conditions once they know the history; almost none will cover it if it is found later and was never disclosed.
What does my state require for tank work?
Many states have their own financial responsibility rules for underground storage tank work, on top of any insurance your contract requires. These rules set a minimum amount of coverage a tank contractor has to carry or prove. What your state requires varies, so ask your broker or your state's environmental agency before you bid, rather than assuming your general contracting insurance already satisfies it.
What about hauling the tank and contaminated soil?
Getting the tank and soil off site is part of nearly every removal job. If you haul it yourself, your regular commercial auto policy excludes pollution and will not cover a spill during transport. That usually needs its own coverage for pollution while material is in transit. Separately, if the landfill you use is later found to be a problem site, you can be named in that cleanup years later unless your policy covers disposal sites you do not own. See non-owned disposal site coverage for remediation contractors.
What limits do contracts and states typically expect?
| Kind of job | Typical pollution limit |
|---|---|
| Single residential heating oil tank | $1,000,000 for one incident and $2,000,000 total for the year |
| Commercial fuel tank at a gas station or fleet yard | $1,000,000 to $2,000,000, often with the property owner named on your policy |
| Multiple tanks or a known contamination site | $2,000,000 to $5,000,000, sometimes with a separate, smaller sublimit for pre-existing conditions |
| Large industrial or municipal tank field | $5,000,000 or more, usually the pollution policy plus an excess layer from the same specialty market. A regular umbrella excludes pollution and will not sit over this policy on its own. |
What does tank removal pollution insurance cost?
These are illustrative. Revenue, tank age, hauling, state, and claims history set the real price.
| Business | Illustrative annual cost, $1,000,000 limit |
|---|---|
| Small firm, residential heating oil tanks only, 1 to 5 employees | $5,000 to $7,500 |
| Firm doing commercial and gas station tanks, 6 to 20 employees | $7,000 to $12,000 |
| Same firm at a $5,000,000 limit | Roughly one and a half to two and a half times the $1,000,000 price, because each layer above the first costs less per dollar. Ask for both prices. |
Defense costs on most contractors pollution liability policies come out of the limit rather than on top of it, so a large defense bill can shrink what is left to pay a claim. See how to find cheaper pollution coverage.
What will the application ask me?
Expect questions about how many tanks you remove a year, their age and past use, whether you test soil before you start, and whether you haul the tank and soil yourself.
What this looks like in real life
Illustrative example. It is typical of what we see and is not a promise of how any specific situation would be handled.
The setup: A tank removal contractor in Massachusetts with eight employees is hired to pull a 1970s heating oil tank from behind an old commercial building. He carries an annual $2,000,000 contractors pollution liability policy that costs him an illustrative $8,600 a year, and he flagged the tank's age and past leak history on the application before the job.
What went wrong: Once the tank is out, soil testing shows contamination that has clearly been spreading for years. The state orders soil removal and groundwater monitoring, and the property owner blames the contractor for not catching it sooner.
What it cost: Cleanup and monitoring run about $110,000. His general liability insurer denies the claim under the pollution exclusion. His pollution policy pays a limited amount toward the pre-existing contamination, because he disclosed the tank's history when he bought the policy, but the sublimit is lower than his main limit, so he still covers part of the cost himself.
The fix: For tank removal, telling your broker about a site's known history before the job, not after a claim, decides whether pre-existing contamination gets any coverage at all.
Frequently asked questions
Q: What insurance does an underground storage tank removal contractor need?
Contractors pollution liability built for leaking tanks and contaminated soil, usually at a $1,000,000 to $5,000,000 limit, plus general liability, workers comp, and commercial auto. Ask specifically how the policy handles contamination that already existed before you started the job.
Q: Does my pollution policy cover contamination that was already there before I started?
Often not fully. Pre-existing contamination is commonly excluded or covered at a much smaller sublimit than the rest of the policy. Disclose any known history of leaks at a site before the job, since coverage for pre-existing conditions is usually tied to what you told the insurer up front.
Q: Are there state rules for insurance on tank removal work?
Many states have their own financial responsibility rules for underground storage tank work, separate from anything a contract requires. Check with your state's environmental agency or your broker for what applies before you bid, rather than assuming your general contracting insurance covers it.
Q: Do I need separate coverage for hauling the tank and soil?
If you haul them yourself, yes. Your commercial auto policy excludes pollution, so a spill in transit needs its own coverage, and the landfill you use should be covered under a disposal site provision if you do not own it.
Q: Does an umbrella policy add pollution limit for tank removal?
No. A standard umbrella or excess liability policy excludes pollution. Extra limit above your contractors pollution liability policy has to come from an excess layer in the same specialty market.
Q: How long does it take to get pollution insurance for a tank removal job?
Usually 2 to 10 business days with a complete application. Disclosing a site's known history up front, instead of leaving it out, keeps the process moving and avoids a coverage fight later.
How Morrow helps
Morrow is a licensed independent commercial insurance brokerage that works with contractors and trades every day. Placing pollution coverage for tank removal contractors, and being clear about what a policy does and does not cover for pre-existing contamination, is something we do regularly.
- Free contract review. Send us the contract or bid documents and we mark up the insurance section in plain English, whether or not you buy anything from us.
- Free, instant certificates. Clients issue their own certificates of insurance online in about a minute, any hour, any day, at no charge.
- Markets you cannot reach online. One application, shopped across many insurance companies for general liability, workers comp, auto, umbrella, and pollution coverage.
One more thing. This article is general information and is not legal advice or a statement of coverage. Your contract and your policy wording control in every case. Requirements vary by customer, by state, and by insurance company, so have a licensed advisor review your own contract and your own policy before relying on any of it.
Last updated: Reviewed by the Morrow commercial lines team. Last updated September 2026.