# The Pollution Prevention and Control (Scotland) Regulations 2000, 


(a) Carrying out any activity involving–
(i) the use of less than 1 tonne of toleune di-isocyanate or partly polymerised toluene di-isocyanate or other di-isocyanate compounds which have comparable volatility in any 12 month period;
(ii) the use of 5 tonnes or more of methyl di-isocyanate or partly polymerised di-isocyanate or other di-isocyanate compounds which have comparable volatility in any 12 month period,
where the activity may result in a release into the air which contains such a di-isocyanate monomer.
(b) Cutting polyurethane foams or polyurethane elastomers with heated wires if not related to any other Part A activity.
(c) Any activity, if not related to any other Part A activity, for the polymerisation or co-polymerisation of any pre-formulated resin or pre-formulated gel coat which contains any styrene, which is likely to involve, in any 12 month period, the polymerisation or co-polymerisation of 100 tonnes or more of styrene.

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Source: https://www.legislation.gov.uk/ssi/2000/323/schedule/1/part/I/chapter/4/crossheading/2 (the official version)
Page: https://openlegislation.uk/pollution-prevention-and-control-scotland-regulations-2000/schedule-1/part-I/chapter-4/crossheading-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.