Commonwealth Consolidated Acts Commonwealth Consolidated Acts(1) A reference in this Act to ODP tonnes, in relation to an HCFC, is a reference to the quantity of the HCFC that results from multiplying its mass in tonnes by its ozone depleting potential.
(2) If a substance is or contains a mixture of 2 or more HCFCs, the quantity of the substance, expressed in ODP tonnes, is the quantity that results from adding together the quantities of each of those HCFCs, expressed in ODP tonnes.