{
  "url": "https://openlegislation.uk/control-of-atmospheric-pollution-research-and-publicity-regulations-1977/regulation-4",
  "json_url": "https://openlegislation.uk/control-of-atmospheric-pollution-research-and-publicity-regulations-1977/regulation-4.json",
  "legislation": "uksi/1977/19",
  "legislation_title": "The Control of Atmospheric Pollution (Research and Publicity) Regulations 1977",
  "legislation_url": "https://openlegislation.uk/control-of-atmospheric-pollution-research-and-publicity-regulations-1977",
  "path": "regulation/4",
  "kind": "regulation",
  "number": "4",
  "heading": "Information which may be required",
  "text": "(1) Subject to paragraph (2) below, a notice shall specify the premises to which it relates and may require the furnishing of estimates or other information, in respect of those premises, of any of the following kinds:—\n(a) in relation to emissions of sulphur dioxide during any specified period—\n(i) the aggregate duration of all discharges from the specified premises during that period;\n(ii) the temperature in degrees Celsius, the efflux velocity in metres per second, and the volume flow rates in cubic metres per hour, of the gases discharged from any specified chimney or flue or other specified outlet during that period, and the height in metres above ground level at which each such discharge takes place;\n(iii) the aggregate quantity of sulphur dioxide discharged during that period, to be ascertained, in the case of sulphur dioxide derived from a combustion process, either by calculation from the quantity of fuel or other matter burnt and its sulphur content, or, if the occupier of the premises and the local authority so agree, by direct measurement;\n(b) in relation to total emissions of particulate matter of all kinds during any specified period—\n(i) the aggregate duration of all discharges from the specified premises during that period;\n(ii) the temperature in degrees Celsius, the efflux velocity in metres per second, and the volume flow rates in cubic metres per hour, of the gases discharged from any specified chimney or flue or other specified outlet during that period, and the height in metres above ground level at which each such discharge takes place;\n(iii) the average concentration of particulates in the gases discharged during that period in grams per cubic metre at standard temperature and pressure (that is to say, a temperature of 15 degrees Celsius and a barometric pressure of one bar);\n(iv) the aggregate quantity of particulates discharged during that period;\n(c) in relation to emissions of gas other than sulphur dioxide or emissions of any specified particulate matter during any specified period—\n(i) the aggregate duration of all discharges from the specified premises during the period;\n(ii) the temperature in degrees Celsius, the efflux velocity in metres per second, and the volume flow rates in cubic metres per hour, of the gases discharged from any specified chimney or flue or other specified outlet during that period, and the height in metres above ground level at which each such discharge takes place;\n(iii) the average concentration of specified pollutants in the discharges made during the period;\n(iv) the aggregate quantity of specified pollutants discharged during the period.\n(2) Where a notice relates to an emission which has taken place before the giving of the notice, it may not require information of a prescribed kind concerning that emission, except and in so far as that information is in the possession of the occupier of the specified premises or immediately available to him.\n(3) In the regulation, “specified”, in respect of any matter to which a notice relates, means specified in the relevant notice, and “prescribed” means prescribed by paragraph (1) of this regulation.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1977/19/regulation/4",
    "retrieved_at": "2026-10-29T20:11:21.419269+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}