# Commission Implementing Decision of 28 February 2012 establishing the best available techniques (BAT) conclusions under Directive 2010/75/EU of the European Parliament and of the Council on industrial emissions for iron and steel production (notified under document C(2012) 903) (Text with EEA relevance) (2012/135/EU), Division: EXPRESSION OF EMISSION LEVELS ASSOCIATED WITH THE BEST AVAILABLE TECHNIQUES (BAT-AELs)

Extent: E+W+S+N.I.

In these BAT conclusions, BAT-AELs for air emissions are expressed as either:
mass of emitted substances per volume of waste gas under standard conditions (273,15 K, 101,3 kPa), after deduction of water vapour content, expressed in the units g/Nm3, mg/Nm3, μg/Nm3 or ng/Nm3; or
mass of emitted substances per unit of mass of products generated or processed (consumption or emission factors), expressed in the units kg/t, g/t, mg/t or μg/t.
and BAT-AELs for emissions to water are expressed as:
mass of emitted substances per volume of waste water, expressed in the units g/l, mg/l or μg/l.

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Source: https://www.legislation.gov.uk/eudn/2012/135/annex/division/2/division/1 (the official version)
Page: https://openlegislation.uk/eu-decision-2012-135/annex/division-2/division-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.