{
  "url": "https://openlegislation.uk/eu-decision-2011-850/annex-I/division-B",
  "json_url": "https://openlegislation.uk/eu-decision-2011-850/annex-I/division-B.json",
  "legislation": "eudn/2011/850",
  "legislation_title": "Commission Implementing Decision of 12 December 2011 laying down rules for Directives 2004/107/EC and 2008/50/EC of the European Parliament and of the Council as regards the reciprocal exchange of information and reporting on ambient air quality (notified under document C(2011) 9068) (2011/850/EU)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2011-850",
  "path": "annex/I/division/B",
  "kind": "division",
  "number": "(B)",
  "heading": "Environmental objectives and reporting metrics",
  "text": "LV: limit value, LVMT: Limit value plus margin of tolerance, TV: target value, LTO: long-term objective, INT: Information threshold, ALT: Alert threshold, CL: Critical level, NAT: Assessment of natural contribution, WSS: Assessment of winter-sanding and -salting, ERT: Exposure reduction target, ECO: Exposure concentration obligation.\nNo up-to-date data is to be made available.\nFormula\nProtection target\nEnvironmental Objective type (Code)\nAveraging period of assessments\nReporting metric of environmental objective\nNumerical values of the environmental objective(allowed number of exceedances)\nPollutants for which up-to-date and validated data have to be reported\nNO2\nHealth\nLV\n1 hour\nHours in exceedance in a calendar year\n200 μg/m3 (18)\nLVMT\nLV\n1 calendar year\nAnnual average\n40 μg/m3\nLVMT\nALT\n1 hour\nThree consecutive hours in exceedance (at locations representative of air quality over at least 100 km2 or an entire zone or agglomeration, which ever is smaller)\n400 μg/m3\nNOx\nVegetation\nCL\n1 calendar year\nAnnual average\n30 μg/m3\nPM10\nHealth\nLV\n1 day\nDays in exceedance in a calendar year\n50 μg/m3 (35)\nPercentile of 90,4\nLV\n1 calendar year\nAnnual average\n40 μg/m3\nWSS\n1 day\nDeducted days in exceedance in a calendar year\nn.a.\n1 calendar year\nDeduction of annual average\nn.a.\nNAT\n1 day\nDeducted days in exceedance in a calendar year\nn.a.\n1 calendar year\nDeduction of the annual average\nn.a.\nPM2,5\nHealth\nECO\n3 subsequent calendar years\nAverage Exposure Indicator (calculation see Directive 2008/50/EC)\n20 μg/m3\nERT\nin accordance with Annex XIV, Part B to Directive 2008/50/EC\nTV\n1 calendar year\nAnnual average\n25 μg/m3\nLV\nLVMT\nSO2\nHealth\nLV\n1 hour\nHours in exceedance in a calendar year\n350 μg/m3 (24)\n1 day\nDays in exceedance in a calendar year\n125 μg/m3 (3)\nALT\n1 hour\nThree consecutive hours in exceedance (at locations representative of air quality over at least 100 km2 or an entire zone or agglomeration, which ever is smaller)\n500 μg/m3\nNAT\n1 hour\nDeducted hours in exceedance in a calendar year\nn.a.\n1 day\nDeducted days in exceedance in a calendar year\nn.a.\nVegetation\nCL\n1 calendar year\nAnnual average\n20 μg/m3\nWinter\nAverage value over the winter months, i.e. 1 October year x-1 to 31 March year x\n20 μg/m3\nO3\nHealth\nTV\nMaximum daily eight-hour mean\nDays when maximum daily eight-hour mean exceeded the target value averaged over 3 years\n120 μg/m3 (25)\nLTO\nMaximum daily eight-hour mean\nDays when maximum daily eight-hour mean exceeded the long term objective in 1 calendar year\n120 μg/m3\nINT\n1 hour\nHours in exceedance in a calendar year\n180 μg/m3\nALT\n1 hour\nHours in exceedance in a calendar year\n240 μg/m3\nVegetation\nTV\n1 May to 31 July\nAOT40 (calculation see Dir. 2008/50/EC Annex VII)\n18 000 μg/m3·h\nLTO\n1 May to 31 July\nAOT40 (calculation see Dir. 2008/50/EC Annex VII)\n6 000 μg/m3 ·h\nCO\nHealth\nLV\nMaximum daily eight-hour mean\nDays when maximum daily eight-hour mean exceeded the limit value\n10 mg/m3\nPollutants for which only validated data have to be reported\nBenzene\nHealth\nLV\n1 calendar year\nAnnual average\n5 μg/m3\nLead\nHealth\nLV\n1 calendar year\nAnnual average\n0,5 μg/m3\nCadmium\nHealth\nTV\n1 calendar year\nAnnual average\n5 ng/m3\nArsenic\nHealth\nTV\n1 calendar year\nAnnual average\n6 ng/m3\nNickel\nHealth\nTV\n1 calendar year\nAnnual average\n20 ng/m 3\nB(a)P\nHealth\nTV\n1 calendar year\nAnnual average\n1 ng/m3",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "X",
      "label": "X1",
      "text": "Substituted by Corrigendum to Commission Implementing Decision 2011/850/EU of 12 December 2011 laying down rules for Directives 2004/107/EC and 2008/50/EC of the European Parliament and of the Council as regards the reciprocal exchange of information and reporting on ambient air quality (Official Journal of the European Union L 335 of 17 December 2011)."
    },
    {
      "type": "footnote",
      "label": "f1",
      "text": "LV: limit value, LVMT: Limit value plus margin of tolerance, TV: target value, LTO: long-term objective, INT: Information threshold, ALT: Alert threshold, CL: Critical level, NAT: Assessment of natural contribution, WSS: Assessment of winter-sanding and -salting, ERT: Exposure reduction target, ECO: Exposure concentration obligation."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "No up-to-date data is to be made available."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2011/850/annex/I/division/B",
    "retrieved_at": "2026-11-01T15:15:36.066942+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."
}