{
  "url": "https://openlegislation.uk/eu-decision-2013-732/annex/division-4/division-5",
  "json_url": "https://openlegislation.uk/eu-decision-2013-732/annex/division-4/division-5.json",
  "legislation": "eudn/2013/732",
  "legislation_title": "Commission Implementing Decision of 9 December 2013 establishing the best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council on industrial emissions, for the production of chlor-alkali (notified under document C(2013) 8589) (Text with EEA relevance) (2013/732/EU)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2013-732",
  "path": "annex/division/4/division/5",
  "kind": "division",
  "number": "5",
  "heading": "Monitoring of emissions",
  "text": "BAT 7: BAT is to monitor emissions to air and water by using monitoring techniques in accordance with EN standards with at least the minimum frequency given below. If EN standards are not available, BAT is to use ISO, national or other international standards that ensure the provision of data of an equivalent scientific quality.\nMonitoring encompasses both continuous and periodic monitoring as indicated.\nEnvironmental medium\nSubstance(s)\nSampling point\nMethod\nStandard(s)\nMinimum monitoring frequency\nMonitoring associated with\nAir\nChlorine and chlorine dioxide, expressed as Cl2\nOutlet of chlorine absorption unit\nElectrochemical cells\nNo EN or ISO standard available\nContinuous\n—\nAbsorption in a solution, with subsequent analysis\nNo EN or ISO standard available\nYearly (at least three consecutive hourly measurements)\nBAT 8\nWater\nChlorate\nWhere the emission leaves the installation\nIon chromatography\nEN ISO 10304–4\nMonthly\nBAT 14\nChloride\nBrine purge\nIon chromatography or flow analysis\nEN ISO 10304–1 or EN ISO 15682\nMonthly\nBAT 12\nFree chlorine\nClose to the source\nReduction potential\nNo EN or ISO standard available\nContinuous\n—\nWhere the emission leaves the installation\nFree chlorine\nEN ISO 7393–1 or –2\nMonthly\nBAT 13\nHalogenated organic compound\nBrine purge\nAdsorbable organically-bound halogens (AOX)\nAnnex A to EN ISO 9562\nYearly\nBAT 15\nMercury\nOutlet of the mercury treatment unit\nAtomic absorption spectrometry or atomic fluorescence spectrometry\nEN ISO 12846 or EN ISO 17852\nDaily\nBAT 3\nSulphate\nBrine purge\nIon chromatography\nEN ISO 10304–1\nYearly\n—\nRelevant heavy metals (e.g. nickel, copper)\nBrine purge\nInductively-coupled plasma optical emission spectrometry or inductively-coupled plasma mass spectrometry\nEN ISO 11885 or EN ISO 17294-2\nYearly\n—",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "Monitoring encompasses both continuous and periodic monitoring as indicated."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2013/732/annex/division/4/division/5",
    "retrieved_at": "2026-11-01T15:14:56.261571+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."
}