{
  "url": "https://openlegislation.uk/eu-decision-2017-302/annex/division-3/division-2/division-2.1/division-BAT",
  "json_url": "https://openlegislation.uk/eu-decision-2017-302/annex/division-3/division-2/division-2.1/division-BAT.json",
  "legislation": "eudn/2017/302",
  "legislation_title": "Commission Implementing Decision (EU) 2017/302 of 15 February 2017 establishing best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council, for the intensive rearing of poultry or pigs (notified under document C(2017) 688) (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2017-302",
  "path": "annex/division/3/division/2/division/2.1/division/BAT",
  "kind": "division",
  "number": "BAT 30",
  "heading": null,
  "text": "In order to reduce ammonia emissions to air from each pig house, BAT is to use one or a combination of the techniques given below.\nA description of the techniques is given in Sections 4.11 and 4.12.\nTechnique\nAnimal category\nApplicability\na\nOne of the following techniques, which apply one or a combination of the following principles:\n(i) reduce the ammonia emitting surface;\n(ii) increase the frequency of slurry (manure) removal to external storage;\n(iii) separate urine from faeces;\n(iv) keep litter clean and dry..\n0.\nA deep pit (in case of a fully or partly slatted floor) only if used in combination with an additional mitigation measure, e.g.:\na combination of nutritional management techniques;\nair cleaning system;\npH reduction of the slurry;\nslurry cooling.\nAll pigs\nNot applicable to new plants, unless a deep pit is combined with an air cleaning system, slurry cooling and/or pH reduction of the slurry.\n1.\nA vacuum system for frequent slurry removal (in case of a fully or partly slatted floor).\nAll pigs\nMay not be generally applicable to existing plants due to technical and/or economic considerations.\n2.\nSlanted walls in the manure channel (in case of a fully or partly slatted floor).\nAll pigs\n3.\nA scraper for frequent slurry removal (in case of a fully or partly slatted floor).\nAll pigs\n4.\nFrequent slurry removal by flushing (in case of a fully or partly slatted floor).\nAll pigs\nMay not be generally applicable to existing plants due to technical and/or economic considerations.\nWhen the liquid fraction of the slurry is used for flushing, this technique may not be applicable to farms located close to sensitive receptors due to odour peaks during flushing.\n5.\nReduced manure pit (in case of a partly slatted floor).\nMating and gestating sows\nMay not be generally applicable to existing plants due to technical and/or economic considerations.\nFattening pigs\n6.\nFull litter system (in case of a solid concrete floor).\nMating and gestating sows\nSolid manure systems are not applicable to new plants unless it can be justified for animal welfare reasons.\nMay not be applicable to naturally ventilated plants located in warm climates and to existing plants with forced ventilation for weaners and fattening pigs.\nBAT 30.a7 may require large space availability.\nWeaners\nFattening pigs\n7.\nKennel/hut housing (in case of a partly slatted floor).\nMating and gestating sows\nWeaners\nFattening pigs\n8.\nStraw flow system (in case of a solid concrete floor).\nWeaners\nFattening pigs\n9.\nConvex floor and separated manure and water channels (in case of partly slatted pens).\nWeaners\nMay not be generally applicable to existing plants due to technical and/or economic considerations.\nFattening pigs\n10.\nLittered pens with combined manure generation (slurry and solid manure).\nFarrowing sows\nMay not be generally applicable to existing plants due to technical and/or economic considerations.\n11.\nFeeding/lying boxes on solid floor (in case of litter-based pens).\nMating and gestating sows\nNot applicable to existing plants without solid concrete floors.\n12.\nManure pan (in case of a fully or partly slatted floor).\nFarrowing sows\nGenerally applicable.\n13.\nManure collection in water.\nWeaners\nMay not be generally applicable to existing plants due to technical and/or economic considerations.\nFattening pigs\n14.\nV-shaped manure belts (in case of partly slatted floor).\nFattening pigs\n15.\nA combination of water and manure channels (in case of a fully slatted floor).\nFarrowing sows\n16.\nLittered external alley (in case of a solid concrete floor).\nFattening pigs\nNot applicable to cold climates.\nMay not be generally applicable to existing plants due to technical and/or economic considerations.\nb\nSlurry cooling.\nAll pigs\nNot applicable when:\nheat reuse is not possible;\nlitter is used.\nc\nUse of an air cleaning system, such as:\n1.. Wet acid scrubber;\n2.. Two-stage or three-stage air cleaning system;\n3.. Bioscrubber (or biotrickling filter).\nAll pigs\nMay not be generally applicable due to the high implementation cost.\nApplicable to existing plants only where a centralised ventilation system is used.\nd\nSlurry acidification.\nAll pigs\nGenerally applicable.\ne\nUse of floating balls in the manure channel.\nFattening pigs\nNot applicable to plants equipped with pits that have slanted walls and to plants that apply slurry removal by flushing.\nTable 2.1\nBAT-AEL for ammonia emissions to air from each pig house\nThe lower end of the range is associated with the use of an air cleaning system.\nFor existing plants using a deep pit in combination with nutritional management techniques, the upper end of the BAT-AEL is 4,0 kg NH3/animal place/year.\nFor plants using BAT 30.a6, 30.a7 or 30.a11, the upper end of the BAT-AEL is 5,2 kg NH3/animal place/year.\nFor existing plants using BAT 30.a0 in combination with nutritional management techniques, the upper end of the BAT-AEL is 7,5 kg NH3/animal place/year.\nFor existing plants using a deep pit in combination with nutritional management techniques, the upper end of the BAT-AEL is 0,7 kg NH3/animal place/year.\nFor plants using BAT 30.a6, 30.a7 or 30.a8, the upper end of the BAT-AEL is 0,7 kg NH3/animal place/year.\nFor existing plants using a deep pit in combination with nutritional management techniques, the upper end of the BAT-AEL is 3,6 kg NH3/animal place/year.\nFor plants using BAT 30.a6, 30.a7, 30.a8 or 30.a16, the upper end of the BAT-AEL is 5,65 kg NH3/animal place/year.\nParameter\nAnimal category\nBAT-AEL(kg NH3/animal place/year)\nAmmonia expressed as NH3\nMating and gestating sows\n0,2-2,7\nFarrowing sows (including piglets) in crates\n0,4-5,6\nWeaners\n0,03-0,53\nFattening pigs\n0,1-2,6\nThe BAT-AELs may not be applicable to organic livestock production. The associated monitoring is in BAT 25.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "X",
      "label": "X1",
      "text": "Substituted by Corrigendum to Commission Implementing Decision (EU) 2017/302 of 15 February 2017 establishing best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council, for the intensive rearing of poultry or pigs (Official Journal of the European Union L 43 of 21 February 2017)."
    },
    {
      "type": "footnote",
      "label": "f1",
      "text": "A description of the techniques is given in Sections 4.11 and 4.12."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "The lower end of the range is associated with the use of an air cleaning system."
    },
    {
      "type": "footnote",
      "label": "f3",
      "text": "For existing plants using a deep pit in combination with nutritional management techniques, the upper end of the BAT-AEL is 4,0 kg NH3/animal place/year."
    },
    {
      "type": "footnote",
      "label": "f4",
      "text": "For plants using BAT 30.a6, 30.a7 or 30.a11, the upper end of the BAT-AEL is 5,2 kg NH3/animal place/year."
    },
    {
      "type": "footnote",
      "label": "f5",
      "text": "For existing plants using BAT 30.a0 in combination with nutritional management techniques, the upper end of the BAT-AEL is 7,5 kg NH3/animal place/year."
    },
    {
      "type": "footnote",
      "label": "f6",
      "text": "For existing plants using a deep pit in combination with nutritional management techniques, the upper end of the BAT-AEL is 0,7 kg NH3/animal place/year."
    },
    {
      "type": "footnote",
      "label": "f7",
      "text": "For plants using BAT 30.a6, 30.a7 or 30.a8, the upper end of the BAT-AEL is 0,7 kg NH3/animal place/year."
    },
    {
      "type": "footnote",
      "label": "f8",
      "text": "For existing plants using a deep pit in combination with nutritional management techniques, the upper end of the BAT-AEL is 3,6 kg NH3/animal place/year."
    },
    {
      "type": "footnote",
      "label": "f9",
      "text": "For plants using BAT 30.a6, 30.a7, 30.a8 or 30.a16, the upper end of the BAT-AEL is 5,65 kg NH3/animal place/year."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2017/302/annex/division/3/division/2/division/2.1/division/BAT",
    "retrieved_at": "2026-11-01T15:13:35.783160+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."
}