Oil Tank Abandonment in Place in Maine
Maine treats leaving a tank in the ground as the exception. It has to be justified against a written test, acknowledged by the Department, and then recorded against the property title.
When Maine Allows a Tank to Stay in the Ground
The rule starts from the opposite end to the one most owners expect. Closed facilities and tanks must be removed. Abandonment in place is available only where the owner can demonstrate to the Commissioner that removal is not physically possible or practicable, on one of four grounds.
Under a Building That Cannot Practically Be Replaced
The commonest of the four in Portland ME, where tanks were routinely set under additions and porches that were built over them afterwards.
Too Large or Too Heavily Built to Remove
A size and construction test rather than a weight one. It rules out very little residential steel.
Beyond the Reach of the Heavy Equipment Needed
Access, judged against what the removal would actually take. A tight lot is an argument here; an inconvenient one is not.
Positioned So Removal Would Endanger Nearby Tanks
Written for sites with more than one tank in the ground. It rarely reaches a single house tank.
The four grounds are 06-096 C.M.R. ch. 691 section 11(E)(1)(a) to (d). Read August 2026.
The Variance Route When None of the Four Apply
There is a second door, and it is narrower than it looks. An owner may apply to the Commissioner for a variance to abandon a tank for reasons outside the four grounds, but it can only be granted if the Commissioner finds both that removal is genuinely not possible or practicable, and that granting it threatens neither a private nor a public drinking water supply nor groundwater quality.
That second limb is where most residential applications would run aground in Cumberland County, because a great deal of the county is within reach of private wells. Maine treats the area within 300 feet of a private well as a wellhead protection zone, and 1,000 feet of a public well or the mapped source water protection area, whichever is larger.
Variance from ch. 691 section 11(E)(2). Wellhead zone distances from the note to section 11(F), which points at 38 M.R.S. sections 1391 to 1400 and Chapter 692. Read August 2026. Whether a variance is granted is the Commissioner’s decision and never ours.
How a Tank Is Filled and Closed in Place
Once the Department has acknowledged in writing that the tank meets one of the grounds, the work follows the same notification route as a removal and then the Appendix K procedure: the tank is emptied and cleaned of liquids and sludge, inerted, and filled with an approved material.
The owner also has to keep a permanent record of where the tank is, the date it was abandoned, how it was cleaned and inerted and what was used to fill it. On a rented or inherited property that record is worth storing with the deeds rather than in a folder at the house, because it is the document that answers the buyer’s question two owners from now.
Procedure from ch. 691 section 11(E)(3), record keeping from section 11(F)(2). Read August 2026.
The Notice That Goes on the Property Deed
This is the provision nobody ranking for these terms mentions, and it is the one with the longest life.
The tank owner is responsible for attaching a notice to the deed of the property recording that an underground oil storage tank or underground piping has been abandoned in place. It has to be executed within thirty days of the abandonment being completed, and a copy of the executed notice, back from the county registry of deeds, goes to the Commissioner.
So the difference between the two routes is not only what happens in the yard. A removal produces a closure record you hold. An abandonment produces an entry on the title that every future owner, lender and attorney reads, and that nobody can quietly lose. The statutory duties sitting behind all of this are set out in the Maine oil clean-up fund statute and the Department’s underground tank rules index.
Deed notice from ch. 691 section 11(F)(3). Read August 2026.
What an Abandoned Tank Does to a Sale
A deed notation is a disclosed, documented condition. That is better than an undocumented tank and worse than a removal, and the gap between those three states is where the money moves.
An owner who does not live at the property tends to feel this hardest, because the decision is usually being made at the point of sale rather than years before it. Buyers price an open question conservatively, and a tank that is known to be down there without a record of what the soil around it was doing is about as open as a question gets.
If the tank is still reachable, the comparison worth running is against a straightforward buried tank removal rather than against doing nothing.
Oil Tank Abandonment Questions From Maine Owners
- What does oil tank abandonment mean?
- The tank stays in the ground. It is emptied, cleaned, inerted and filled with an approved material, and the openings are sealed. In Maine it is a closure route that has to be justified, not a service you can simply order instead of a removal.
- How much does it cost to abandon an underground oil tank?
- Less than removing it, which is why owners ask for it. The saving is real on the day and it is not the whole picture: the deed notice is permanent, and a buyer pricing an unknown tank in the ground will usually take more off than the excavation would have cost.
- Do you need permission to abandon a tank in place in Maine?
- Yes. The owner has to demonstrate to the Commissioner that removal is not physically possible or practicable, and the tank cannot be abandoned until the Department has given written acknowledgment that it meets one of the grounds. Where none of them fit, there is a separate variance application.
- Does the abandonment have to go on the deed?
- Yes, and this is the part most owners have not heard about. The tank owner is responsible for attaching a notice to the deed of the property recording that a tank or underground piping has been abandoned in place. It has to be executed within thirty days of completion, and a copy of the executed notice from the county registry of deeds goes to the Commissioner.
- Can I abandon a tank to get a sale over the line quickly?
- It is usually the slower route, not the faster one. Removal needs ten business days of notice and then a day of work. Abandonment needs the same notice plus a written acknowledgment from the Department first, and then leaves a deed notation the buyer's attorney will read.
Ask Whether a Tank Has to Come Out
Tell us where the tank sits and what has been built over it since. That is normally enough to say whether the abandonment test is even arguable on your property.