Method for underground storage tank abandonment

E - Fixed Constructions – 02 – D

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61/2.4

E02D 29/00 (2006.01)

Patent

CA 1305866

TITLE METHOD FOR UNDERGROUND STORAGE TANK ABANDONMENT INVENTOR Michael D. DUGGER ABSTRACT An improved method for abandoning an empty used underground storage tank for the purpose of rendering the tank unusable for the storage of any liquid material by filling the tank with a solid material, wherein the improvement comprises filling the tank with a rigid polyurethane foam material. Particularly urethane foam material of a two-component system comprising a component A and a component B is used where component A is an isocyanate and component B is polyol resin.

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