‘environmental treatment and recycling asset’ means any air, water, and solid waste treatment and recycling plant or pollution control and monitoring equipment (and any improvement to the plant or equipment) if the plant or equipment is-
(a) utilised in the course of a taxpayer’s trade in a process that is ancillary to any process of manufacture or any other process which, in the opinion of the Commissioner, is of a similar nature; and
(b) required by any law of the Republic for purposes of complying with measurres that protect the environment; and