A buried heating oil tank turns up in plenty of Salem home inspections: a fill pipe in a flowerbed, a vent up the side of the house, old oil lines through the basement wall. It is rarely a reason to walk away from a house you want. It is a reason to test before you close, because in Oregon the tank’s history becomes yours the day you take ownership.
Why DEQ Tells Buyers to Test Before Closing
DEQ’s guidance for buying or selling a home with a heating oil tank is blunt about who pays. The current owner is responsible for any necessary cleanup, even if the leak happened before they bought the property. A buyer who purchases knowing a tank is present, without any work to find out whether it leaked, also becomes responsible for leaks discovered later.
That is why DEQ recommends that a buyer have the tank checked for leakage when it was abandoned without a proper decommissioning, including soil sampling, or when it is still in use and has never been tested. A soil test during your inspection period costs a few hundred dollars. A leak discovered after closing is yours to clean up.
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Underground Oil Tank Removal
Full decommissioning of buried heating oil tanks in Salem under the Oregon DEQ heating oil tank rules. We locate, pump, clean, cut, lift and sample, then file the certified report so DEQ registers it and sends you the letter for the property file.
What a Pre-Closing Tank Check Involves
- Confirm the tank. If there is only a pipe to go on, a buried oil tank locate establishes whether a tank is there and where. DEQ puts that at typically $100 to $200.
- Check the records. Ask the seller for any DEQ decommissioning report and registration letter, and look up DEQ records for the address. A registered decommissioning with clean samples answers the question.
- Test the soil. Where the tank was never properly closed, samples beside it show whether it leaked. DEQ estimates a basic soil test at about $200 to $300.
- Read the result. Under 50 ppm of diesel-range hydrocarbons is clean. At or above 50 ppm is a confirmed release that has to be reported to DEQ within 72 hours.
Timing the Test Inside Your Inspection Period
The standard Oregon residential sale agreement lists leaking underground storage tanks among the environmental issues a buyer may want inspected, and soil sampling counts as an invasive inspection that has to be named in the agreement. In the 2023 version of that form, the inspection period defaults to 10 business days if none is written in, so book the locate and soil test as soon as your offer is accepted.
Check the date on any test the seller offers instead. DEQ will not rely on site assessment samples more than 90 days old to certify a decommissioning or cleanup, so an old seller test may carry less weight than it seems to.
What Your Lender Will Look For
There is no blanket rule that a tank has to be removed before a government-backed loan can close. On an FHA loan the appraiser reports readily observable evidence of an underground tank, such as a fill or vent pipe, and evidence of leakage leads to further testing; what the lender then requires is the underwriter’s decision. VA appraisals likewise flag underground storage tanks as a potential environmental problem. A clean soil test or a registered decommissioning is the kind of documentation an underwriter can act on, so having one in hand keeps the tank from holding up funding.
What to Ask the Seller For
Under ORS 466.878, the seller must make sure a known abandoned heating oil tank has been emptied and give you documentation, usually a dated pump-out receipt. That receipt proves the tank is empty, not that it never leaked. On the Oregon seller disclosure form the seller answers whether there are any tanks on the property and whether it has been tested for fuel storage tanks or contaminated soil, and an answer of “unknown” is a reason to test rather than reassurance.
- A soil test, paid for by the seller, before your inspection period ends.
- Decommissioning before closing, with the certified report and DEQ letter delivered before the final walkthrough.
- A price credit, if you would rather handle the tank yourself after closing and accept the responsibility that comes with it.
If the Test Finds a Leak
A failed test is a negotiation point, not automatically the end of the deal. The seller can clean up before closing, the two sides can agree a credit or a holdback, or you can walk away within your contingency. Published Portland-area figures put a usual heating oil cleanup at around $3,000, with larger cases over $10,000 and the worst above $30,000, especially where oil has reached groundwater. By the same published figures, the Salem oil tank removal cost for a clean job on a typical tank runs roughly $1,500 to $4,000.
Get a tank check before you close on a Salem home
Speak to a Salem-area decommissioning crew. Free site survey.
Frequently Asked Questions
Should I buy a house with an underground oil tank?
Often yes, once you know whether it leaked. Test the soil or get the registered decommissioning paperwork during your inspection period, then decide. What you want to avoid is closing on an untested tank, because in Oregon the current owner pays for any cleanup.
Does FHA require an oil tank to be removed?
No blanket rule requires removal. The FHA appraiser reports visible evidence of an underground tank, evidence of leakage leads to testing, and the lender decides what documentation it needs before funding.
How long is an oil tank soil test good for?
DEQ will not use site assessment samples more than 90 days old to certify a decommissioning or cleanup, so time the test close to your closing date.