Underground Tank Closure in Place

Closing an underground storage tank in place involves more than just filling the underground tank with a solid, inert material. The cost of a tank closure in place is typically more than that of an underground tank removal. To help you understand what is involved for a tank closure in place, the following are a list of required steps.

  • An application for a permit must be submitted and approved by the Fire Department to close the underground tank in place.
  • A tank inspector must perform a closure assessment, which includes a visual inspection.
  • The fire department may require a structural engineer to inspect the site.
  • The tank must be pumped of fuel and transferred to a truck and fumes inside the tank must be evacuated. 
  • The ground needs to be excavated and the tank has to be cut open for the crews to climb inside and remove the tank bottom sludge.
  • If the tank were not easily accessible then soil borings on two sides of the tank must be taken to ensure the soil surrounding the tank is clean.
  • A soil sample must be collected from under the tank and sent to a lab for analysis. The closure assessment report and the UST closure notice are created utilizing the data from the lab samples.
  • When groundwater is present, monitoring wells need to be installed to take accurate water samples. 

The following are example prices for a tank closure in place versus an underground tank removal for a 1000-gallon underground fuel storage tank.

Cost of a UST Closure in Place: $4,600

Cost of a UST Removal: $3,200

We recommend having an underground tank removed. When structural issues are a concern, the building or wall can be supported during the removal process. A large tank can be cut into smaller sections while the surrounding soil is supported and removed a section at a time. An underground tank removal is generally recommended whenever possible to avoid future problems or questions concerning the underground storage tank.

Contact CommTank today for expert underground oil tank removals in Massachusetts: 1-800-628-8260