Underground Oil Tank Removal Cost in Salem, Oregon

Published Oil Tank Removal Prices for 2026

Oregon has no official price list for this work, so the ranges below come from DEQ’s own estimates and from Portland-area contractors who publish their pricing. Treat them as a guide to what a fair quote looks like, not as our price for your property.

• 01Finding the tank: $100 to $200. DEQ’s typical figure for hiring someone to locate a buried tank.
• 02Soil test beside a known tank: about $200 to $300. DEQ’s estimate for a basic test to see whether a tank has leaked.
• 03Decommissioning in place: from about $1,000. Pumping, cleaning, filling with inert material and sampling a clean site, based on one Portland-area contractor’s published figure.
• 04Underground removal, 550 gallons or smaller: $1,800 to $2,500. One Portland contractor’s published range for this tank size. A national directory puts buried residential removal in Oregon at $1,500 to $4,000.
• 05Larger tanks, 1,000 to 1,499 gallons: $3,500 to $4,500. From the same contractor’s size table. A tank this big is unusual at a house.
• 06Aboveground or basement tank: $1,000 to $2,500. Published Portland-area range. There is no excavation, but a basement tank usually has to be cut up to come out.
• 07DEQ filing fee: $104. The fee to register a clean decommissioning report, in effect since April 2024.

Where published sources disagree, the gap is usually scope. Some figures include soil sampling, lab fees, backfill and the report, while others cover the dig alone. A quote you can compare line by line is worth more than a low headline number.

Removal Versus Decommissioning in Place

Before comparing prices, it helps to know what you actually have to buy. Under ORS 466.878, a tank that is no longer used has to be emptied of oil, and a seller must give the buyer proof of that. Beyond emptying, decommissioning is voluntary. Most owners do it anyway because buyers, lenders and insurers ask for the DEQ letter, and a tank left undocumented turns into a negotiation at sale.

Both routes end in the same registered report, so the choice is mostly about cost and the property. Filling a tank in place avoids digging it out and usually costs less. Removal costs more but leaves nothing in the ground, which matters if you plan to build, extend or landscape over the spot, and some buyers simply insist on it. The choice between removal and filling in place often comes down to what sits on top of the tank.

What Moves the Price of a Salem Job

Two tanks of the same size can be priced very differently. These are the factors that decide where yours lands in the range.

• 01Size and depth. DEQ describes the typical Oregon tank as 46 inches across, 340 to 675 gallons, and buried about two feet down within a couple of feet of the house. A bigger or deeper tank means more digging and more to haul away.
• 02What is on top. A tank under a lawn is the easy case. A tank under a driveway, patio, deck or addition means breaking out and replacing a hard surface, and that restoration is priced on top of the tank work.
• 03Access. A small excavator has to reach the tank. Tight side yards and sloped lots mean more hand digging and a longer day.
• 04Wet soil and groundwater. Salem sits on heavy valley soils with a long rainy season. If groundwater seeps into the excavation, DEQ requires a groundwater sample as well, and any oil found in it turns the job into a cleanup.
• 05Oil and sludge still in the tank. Whatever is left inside has to be pumped out and recycled before the tank is cut or filled.
• 06What the samples show. The single biggest variable, covered in the next section.

Cleanup Costs When the Soil Test Finds a Leak

A soil result at or above 50 ppm of diesel-range hydrocarbons is a confirmed release. It has to be reported to DEQ within 72 hours, and the job becomes a cleanup priced on how far the oil has moved. Published Portland-area figures put a usual remediation at around $3,000, with larger cases over $10,000 and the worst, especially where oil reached groundwater, above $30,000.

The cleanup route shapes the bill. Under the soil matrix, contaminated soil is dug out to a cleanup level of 100, 500 or 1,000 ppm depending on the site, which means the most excavation and disposal. The generic remedy lets some contamination stay in place under strict conditions, with less digging but more sampling. A risk-based closure digs least and leans on lab work and controls instead. DEQ then charges $260, $364 or $468 to register the cleanup report on those three routes.

The current owner pays, even for a leak that happened before they bought, and DEQ’s heating oil tank pages list no state reimbursement fund for residential cleanups. If you already suspect a leak, the emergency leak cleanup steps come before any quote.

How to Read an Oil Tank Removal Quote

Most homeowners collect two or three quotes. These are the lines that should be on every one of them.

• 01A DEQ license number. Anyone you hire to decommission a heating oil tank must hold a DEQ service provider license, and licensed providers must carry errors-and-omissions insurance of at least $500,000 per claim.
• 02The soil sampling plan. How many samples, where they are taken, and that they go to an accredited lab for diesel-range hydrocarbons. DEQ guidance expects two samples below the tank, plus one from the worst-looking soil.
• 03Report drafting and the DEQ fee. The certified report and the $104 registration fee both belong in the base price.
• 04Surface restoration. Lawn back to grade is normally included. Concrete, pavers or planting should be priced separately and in writing.
• 05Contamination terms. How the price changes, per cubic yard of soil or per extra sample, if the test fails. A quote that says nothing about this is the one that surprises you.
• 06Any local permit. DEQ issues no permit for decommissioning, but local building and fire rules can apply, so ask whether the quote covers it.

For a buried tank in the usual Salem setting, underground oil tank removal is quoted as one fixed price for the clean job, with the contamination terms set out beside it.

Ways to Keep the Cost Down

Handle the tank on your own schedule. A tank dealt with before listing avoids paying for speed during escrow. DEQ will not accept soil data more than 90 days old for a certification, though, so a test run too far ahead of a sale may need repeating. The timeline for removal before closing is worth planning backwards from the date.

Combine the visit. Switching from oil to a heat pump triggers the legal duty to empty the tank anyway, so decommissioning at the same time saves a second trip. Energy Trust of Oregon currently offers heat pump incentives to PGE and Pacific Power customers, which covers most of Salem, although it does not list a separate bonus for leaving oil. Oregon’s federally funded home energy rebates were still closed to homeowners in September 2026.

Get the tank found first. A $100 to $200 locate before quoting takes the guesswork out of depth and size, which takes it out of the price too. Current DEQ fees are listed on the DEQ heating oil tank program pages.