s 30 Excessive production of toxic industrial waste
30. Where in the opinion of the Director‑General the quantity of toxic industrial waste produced in any work place is or is likely to be excessive or unduly toxic, he or she may by notice require the occupier of the work place to —(a) alter the method of operation or process used in the work place; (b) alter, install, repair or replace any device, equipment or plant used in the work place; (c) use other materials or substances other than those used in the work place; or (d) take any other steps that may be necessary to reduce the quantity or toxicity of such waste.