Underground Tank Removal Service

Underground tank removal is the process of safely excavating, decommissioning and extracting a buried fuel storage tank from the ground — including fuel uplift, tank cleaning, gas-free certification, lifting or cutting the tank into sections, pipework decommissioning, soil contamination testing and backfill reinstatement. It is a complex, multi-stage operation that must be carried out by a qualified, licensed contractor in accordance with UK environmental legislation and health and safety regulations.

Not always. In some cases, foam filling or concrete filling in situ is a suitable and more cost-effective alternative — particularly where excavation is impractical or where soil contamination risk makes removal inadvisable. However, where a tank is leaking, where the site is being redeveloped, or where a planning authority or insurer requires removal, full tank removal is necessary. Britteco assesses each site individually and recommends the most appropriate approach.

Underground tank removal costs depend on tank size, depth, access, fuel type, remaining fuel and sludge volume, whether soil contamination is present, and whether backfill and reinstatement is required. Because every project is different, Britteco provides site-specific quotations. Send photos, tank dimensions, location and access details to receive a tailored price.

A straightforward underground tank removal may be completed in one to two days. More complex projects — where manholes are buried or concreted over, where petroleum officer approval is required, where soil contamination is discovered, or where reinstatement works are needed — can take several days to several weeks. Britteco provides a realistic programme estimate as part of the site assessment process.

A gas-free certificate confirms that a fuel tank has been cleaned and tested to confirm that flammable vapours are at a safe level for cutting, lifting, transport and disposal to take place. It is issued following atmospheric testing with gas and vapour detection equipment. Without a valid gas-free certificate, cutting or lifting a tank creates serious fire and explosion risk. Gas-free certification is required before hot works, confined space entry or tank transport.

For diesel and heating oil tanks, a gas-free certificate is typically valid for 24 to 48 hours depending on site conditions and project requirements. For petrol tanks, the certificate must be renewed every 24 hours as a minimum — atmospheric monitoring and re-certification is carried out at the start of each working day before works resume. The certificate validity reflects the risk of vapour build-up between working periods.

If a leaking underground tank is discovered or suspected, remaining fuel must be uplifted and the tank decommissioned as quickly as possible. Soil sampling and environmental testing is carried out to determine the extent of contamination. Where contamination is found, soil remediation may be legally required before any development or further works can proceed. Britteco can assist with the full process including soil remediation coordination.

Soil testing is strongly recommended after any underground tank removal — and in many cases is required by planning authorities, insurers or the Environment Agency before redevelopment can proceed. Soil samples are analysed by a UKAS-accredited laboratory to determine whether fuel contamination is present. Britteco can assist with soil testing coordination as part of the removal project.

Soil remediation is the process of removing or treating contaminated ground following a fuel leak or spill. If soil testing identifies contamination above acceptable levels, remediation is legally required before the site can be redeveloped. This typically involves removing contaminated soil and replacing it with clean fill material. Britteco can coordinate soil remediation as part of a complete underground tank removal programme.

Yes — where full removal is not practical, an underground tank can be decommissioned in situ by foam filling or concrete filling. The tank is cleaned, gas-freed and filled with an inert material to render it permanently safe. Foam filling is reversible if future access is required; concrete filling is permanent. Britteco assesses the most appropriate approach for each site.

A Petroleum Officer (Petroleum Enforcement Authority representative) is a local authority official responsible for regulating petrol storage. For any works involving underground petrol tanks, the local Petroleum Officer must be notified in advance and the safe system of work submitted for approval before works commence. Britteco manages all Petroleum Officer liaison as part of the project planning process for petrol tank removals.

CAT (Cable Avoidance Tool) scanning locates underground services — gas pipes, water pipes, electrical cables and telecoms — in the excavation area before digging begins. Striking an underground service during excavation can be fatal. CAT scanning is carried out as standard before any underground tank excavation to identify services that must be avoided or isolated before works proceed.

On completion, Britteco provides a certificate of disposal, waste transfer documentation, gas-free certificates, hazardous waste consignment notes and any other compliance records required for planning, audit, insurance or environmental purposes. Where soil testing has been carried out, laboratory analysis results and a site validation report can be provided.

Underground fuel tank removal must be carried out by a qualified, licensed contractor with experience in confined space entry, hazardous waste handling, gas-free certification and excavation works. For petrol tanks, Petroleum Officer liaison and approval is also required. Britteco's engineers are OFTEC-registered and CHAS-accredited, with direct experience in underground tank removal across commercial, industrial and petrol station sites.

Use the enquiry button on this page and send photos of the site, tank location, estimated tank size, fuel type and access information. Britteco will review the details, advise on the most appropriate removal or decommissioning approach, and provide a site-specific quotation.