{
  "url": "https://openlegislation.uk/air-quality-standards-scotland-regulations-2010/schedule-3",
  "json_url": "https://openlegislation.uk/air-quality-standards-scotland-regulations-2010/schedule-3.json",
  "legislation": "ssi/2010/204",
  "legislation_title": "The Air Quality Standards (Scotland) Regulations 2010",
  "legislation_url": "https://openlegislation.uk/air-quality-standards-scotland-regulations-2010",
  "path": "schedule/3",
  "kind": "schedule",
  "number": "3",
  "heading": "Target values",
  "text": "Arsenic, cadmium, nickel and benzo(a)pyrene\nPollutant\nTarget value for the total content in the PM10 fraction averaged over a calendar year\nDate by which target value should be met\nArsenic\n6 ng/m3\n31st December 2012\nCadmium\n5 ng/m3\n31st December 2012\nNickel\n20 ng/m3\n31st December 2012\nBenzo(a)pyrene\n1 ng/m3\n31st December 2012\nOzone\nObjective\nAveraging period\nTarget value\nProtection of human health\nMaximum daily eight hour mean(a)\n120 µg/m3 not to be exceeded on more than 25 days per calendar year averaged over three years(b)\nProtection of vegetation\nMay to July\nAOT 40 (calculated from 1h values) 18,000 µg/m3 .h averaged over five years(b)",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/ssi/2010/204/schedule/3",
    "retrieved_at": "2026-10-28T21:55:33.792627+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."
}