Most owners of commercial and residential buildings are good customers or clients to companies offering OTS or oil tank services. OTS companies which can be dependable will be endowed with many professional personnel including engineers and technicians who know what it takes to do the following;

I. Bury along with install all types and forms of tank.
II. Provide oil tank sweep and also other similar services thereof.
III. Excavate and remove buried fuel or tanks.
As it pertains to excavating the fuel tank that is underground, the OTS professional technicians could have a discussion with the clients and act on the behalf to acquire necessary permits. The constituted authority's consent to hold out oil tank sweep or removal would need to inspect the area or site where the tank or vessel or reservoir for oil is likely to be excavated. The OTS Company might have made some Utility mark outs on the site ahead of the inspection.
And having been given the go-ahead to complete the removal of the oil cistern or vessel, the oil tank services Company would commence work immediately;
1) The soil on the top of reservoir will be removed (excavated) to at the least expose the top of vessel.
2) The vessel will be carefully cut open.
3) The sludge or liquid that the tank contains could be removed through vacuuming.
4) The oil tank services technicians would see to the proper disposure of the contents of the exposed cistern.

The personnel of OTS Company have so many tools and equipment to use within carrying out oil cisterns services. For instance, as it pertains to doing sweeping of the reservoir, typical ground or earth penetrating radar could be used. Some steel rods would also be provided to greatly help verify the ability, length in addition to the direction of the reservoir.
And when trying to complete oil tank sweep and it's learned that the said vessel has spilled the oil it includes, remediation service will be activated. That is very necessary to be able to protect the environment.