{
  "url": "https://openlegislation.uk/eu-decision-2011-850/article-9",
  "json_url": "https://openlegislation.uk/eu-decision-2011-850/article-9.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": "article/9",
  "kind": "article",
  "number": "9",
  "heading": "Assessment methods",
  "text": "1. The appropriate authority must include in its data repository the information set out in Part D of Annex II on the quality and traceability of the assessment methods applied.\n2. The appropriate authorities must include the information referred to in paragraph 1 ... for a full calendar year no later than 9 months after the end of each calendar year.\n3. Where in a particular zone or agglomeration fixed measurement is mandatory according to Article 4 of Directive 2004/107/EC and Articles 6 and 9 and Article 10(6) of Directive 2008/50/EC, the information shall include at least the following:\n(a) the measurement configuration;\n(b) the demonstration of equivalence where a non-reference method is used;\n(c) the sampling point location, its description and classification;\n(d) the documentation of data quality.\n4. Where in a particular zone or agglomeration indicative measurement is applied in accordance with Article 4 of Directive 2004/107/EC and Articles 6 and 9 and Article 10(6) of Directive 2008/50/EC, the information shall include at least the following:\n(a) the measurement method applied;\n(b) the sampling points and the coverage area;\n(c) the validation method;\n(d) the documentation of data quality.\n5. Where in a particular zone or agglomeration modelling techniques are applied in accordance with Article 4 of Directive 2004/107/EC and Articles 6 and 9 of Directive 2008/50/EC, the information shall include at least the following:\n(a) the description of the modelling system and its inputs;\n(b) the model validation through measurements;\n(c) the coverage area;\n(d) the documentation of data quality.\n6. Where in a particular zone or agglomeration objective estimation is applied in accordance with Article 4 of Directive 2004/107/EC and Articles 6 and 9 of Directive 2008/50/EC, the information shall include at least the following:\n(a) the description of the estimation method;\n(b) the documentation of data quality.\n7. The appropriate authority shall also make available the information set out in Part D of Annex II on the quality and traceability of the assessment methods applied, for the networks and stations selected by the appropriate authority for the purpose of the reciprocal exchange of information as referred to in point (b) of Article 1 for the pollutants listed in Part B of Annex I and where available for the additional pollutants listed in Part C of Annex I and for the additional pollutants listed on the portal for that purpose. Paragraphs 1 to 6 of this Article shall apply to the exchanged information.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Words in Art. 9(1) substituted (31.12.2020) by The Air Quality (Miscellaneous Amendment and Revocation of Retained Direct EU Legislation) (EU Exit) Regulations 2018 (S.I. 2018/1407), regs. 1, 4(12)(a); 2020 c. 1, Sch. 5 para. 1(1)"
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Words in Art. 9(2) substituted (31.12.2020) by The Air Quality (Miscellaneous Amendment and Revocation of Retained Direct EU Legislation) (EU Exit) Regulations 2018 (S.I. 2018/1407), regs. 1, 4(12)(b)(i); 2020 c. 1, Sch. 5 para. 1(1)"
    },
    {
      "type": "F",
      "label": "F3",
      "text": "Words in Art. 9(2) omitted (31.12.2020) by virtue of The Air Quality (Miscellaneous Amendment and Revocation of Retained Direct EU Legislation) (EU Exit) Regulations 2018 (S.I. 2018/1407), regs. 1, 4(12)(b)(ii); 2020 c. 1, Sch. 5 para. 1(1)"
    },
    {
      "type": "F",
      "label": "F4",
      "text": "Words in Art. 9(7) substituted (31.12.2020) by The Air Quality (Miscellaneous Amendment and Revocation of Retained Direct EU Legislation) (EU Exit) Regulations 2018 (S.I. 2018/1407), regs. 1, 4(12)(c)(i); 2020 c. 1, Sch. 5 para. 1(1)"
    },
    {
      "type": "F",
      "label": "F5",
      "text": "Words in Art. 9(7) substituted (31.12.2020) by The Air Quality (Miscellaneous Amendment and Revocation of Retained Direct EU Legislation) (EU Exit) Regulations 2018 (S.I. 2018/1407), regs. 1, 4(12)(c)(ii); 2020 c. 1, Sch. 5 para. 1(1)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2011/850/article/9",
    "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."
}