4. (1) In this Act—

“activity” includes operation;

“disposal”—

(a) means any operation which is not recovery even where the operation has as a secondary consequence the reclamation of substances or energy, and

(b) without prejudice to the generality of paragraph (a), includes the disposal operations listed in the Third Schedule,

and “waste disposal activity” shall be construed accordingly;

“hazardous waste” means waste which displays one or more of the hazardous properties listed in the Second Schedule;

F13["non-hazardous waste" means waste which is not covered by the definition of hazardous waste.]

“recovery”—

(a) means any operation the principal result of which is waste serving a useful purpose by replacing other materials which would otherwise have been used to fulfil a particular function, or waste being prepared to fulfil that function, in the plant or in the wider economy, and

(b) without prejudice to the generality of paragraph (a), includes the recovery operations listed in the Fourth Schedule,

and "waste recovery activity" shall be construed accordingly;

“waste” means any substance or object which the holder discards or intends or is required to discard.

(2) A reference in this Act to waste shall be construed as including a reference to hazardous waste.]