(1) In determining:
(a) the total amount of Schedule 1 chemicals that will be, or were, produced, acquired, retained or used at, or transferred from, a facility; or
(b) the total amount of Schedule 2 chemicals that will be, or were, produced, processed or consumed, at a facility;
any amount of such a chemical that is, or was, subjected to more than one of those activities at that facility is to be counted once only.
(2) In determining the amount of Schedule 1 chemicals that are produced, acquired, retained or used at, or transferred from, Schedule 1 facilities during a year, an amount of such a chemical that is subjected to any of those activities at more than one Schedule 1 facility during a year is to be counted once only.
(3) For the purposes of this Act, the regulations may prescribe the method for working out the total amount of a specified Schedule 1 chemical that is produced, acquired, retained or used at, or transferred from, a facility during a year.
(4) For the purposes of this Act, the regulations may prescribe the method for working out the total amount of a specified Schedule 2 chemical that is produced, processed or consumed at a plant comprising, or comprising part of, a facility during a year.
(5) For the purposes of this Act, the regulations may prescribe the method for working out the total amount of a specified Schedule 3 chemical that is produced at a plant comprising, or comprising part of, a facility during a year.
(6) For the purposes of paragraph 28(6)(a), the regulations may prescribe the method for working out the total amount of unscheduled discrete organic chemicals produced at a facility during a year.
(7) For the purposes of paragraph 28(6)(b), the regulations may prescribe the method for working out the total amount of a specified unscheduled discrete organic chemical that is produced at a plant comprising, or comprising part of, a facility during a year.
(8) A method prescribed under this section may involve disregarding a chemical when produced at or below a specified concentration.
(9) Subsection (8) does not limit subsection (3), (4), (5), (6) or (7).
Note: For specification by class, see subsection 13(3) of the Legislation Act 2003 .