Sumas has successfully decommissioned hundreds of above ground and below ground storage tanks ranging in size from 1000 litres to 250,000 litres. Our complete service includes the removal and disposal by Sumas owned vacuum trucks of residual waste in the tanks, excavation and removalof the tank, followed by cleaning and disposal of the tanks.


In cases where contaminants are discovered, this will be removed by selective excavation and removal of the contaminated soil. The contaminated soil is placed in on-site bio-cells for treatment or loaded on trucks for off-site disposal at one of Sumas owned facilities. Upon confirmation by the consultant that all contamination is removed, the excavation is backfilled, the fill compacted, and the site returned to existing surroundings.