4.—(1) Subject to paragraph (3) below, a person shall notify the Secretary of State on or before 15th January each year if he has—
(a)imported or exported in the previous calendar year, or
(b)operated a plant site in which a plant has produced, processed or consumed during any of the previous three calendar years,
more than—
(i)1kg of a toxic chemical designated “*” in Part A of Schedule 2;
(ii)100kg of any other toxic chemical listed in Part A of Schedule 2; or
(iii)1 tonne of any precursor listed in Part B of Schedule 2.
(2) Subject to paragraph (3) below, a person shall notify the Secretary of State on or before 30th June each year starting with 30th June 1998, if he anticipates operating a plant site in which a plant will produce, process or consume in the next calendar year more than—
(a)1kg of a toxic chemical designated “*” in Part A of Schedule 2;
(b)100kg of any other toxic chemical listed in Part A of Schedule 2; or
(c)1 tonne of any precursor listed in Part B of Schedule 2.
If such production, processing or consumption in respect of a calendar year is planned after 30th June in the previous calendar year, the person shall notify the Secretary of State at least 45 days prior to the commencement of production, processing or consumption.
(3) A person need not notify the Secretary of State in respect of the production, processing, consumption, import or export of a Schedule 2 toxic chemical or precursor if it was or is to be contained in a mixture and constituted or will constitute 10% or less of the mixture by weight.