# The Clean Air (Arrestment Plant) (Exemption) Regulations 1969, Paragraph 4

Extent: E+W+S

Pattern of operation
(a) Degree of use (i.e. permanent, temporary or standby)
(b) Working hours:
per day
per week
per year
(c) Does load on plant vary? YES/NO
If Yes, in what degree?

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Source: https://www.legislation.gov.uk/uksi/1969/1262/schedule/3/paragraph/4 (the official version)
Page: https://openlegislation.uk/clean-air-arrestment-plant-exemption-regulations-1969/schedule-3/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.