Applying Safe and Stringent Measures in Tank Decommissioning

Ultra Northwest offers heating oil tank decommissioning and removal services in Washington state. We complete thorough procedures to ensure the safe and effective removal of oil and other materials from your storage tanks.

Our Services

We can complete decommissioning projects for fuel tanks of various sizes. Our procedures are applicable for various residential, commercial, and municipal structures. Our services include:

  • Tank Locating

  • Site Assessment or Inspection

  • Procurement of Decommissioning Permit

  • Tank Decommissioning and Removal

  • Soil Sampling and Testing

  • Site Remediation (Removal of Contaminated Soil)

  • Excavation

  • Transport

  • Disposal

  • Site Restoration

About the Process

Heating oil tanks, sometimes referred to as H.O.T. in the construction industry, come in two versions: underground and aboveground. Decommissioning a heat oil tank always involves emptying the tank, followed by a meticulous triple-rinsing process, the materials are recycled and/or properly disposed of. 

For aboveground tanks and piping, components are removed only after the tank is emptied and cleaned.

For underground tank systems, decommissioning has a second step that involves two different methods. One method is to remove the tank and the other involves filling the tank and leaving it in place. After either of those steps are done we make sure the site is restored.


Tank Removal

Advantages: With the tank removed, we have better access to test the soil under and around the tank. This allows us to make sure that any contaminated soil is found and removed.

Disadvantages: The removal of tanks under decks and patios are possible but more expensive. We may also be unable to complete these steps under concrete, decks, patios, etc.

In-Place Tank Filling

Advantages: There is less disruption to landscaping and can be completed under concrete, decks, and patios.
Disadvantages: Some jurisdictions do not allow in-place tank filling. Hence, we may not be able to thoroughly inspect and test the soil around the tank. This may be an issue with insurance, mortgage companies, and future homebuyers.

Tank removal in the future also may be more expensive due to the weight of the tank as well as the type of fill material to be used.

Request Our Services

For your questions on our services for fuel systems, you may reach us through our details or you may fill out our contact form.

Telephone: (360) 398-0134
Email: [email protected]