# Commission Implementing Decision (EU) 2016/902 of 30 May 2016 establishing best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council, for common waste water and waste gas treatment/management systems in the chemical sector (notified under document C(2016) 3127) (Text with EEA relevance), Division 2: Monitoring

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

Monitoring frequencies may be adapted if the data series clearly demonstrate a sufficient stability.
The sampling point is located where the emission leaves the installation.
TOC monitoring and COD monitoring are alternatives. TOC monitoring is the preferred option because it does not rely on the use of very toxic compounds.
TN and Ninorg monitoring are alternatives.
An appropriate combination of these methods can be used.
Substance/parameter
Standard(s)
Minimum monitoring frequency
Total organic carbon (TOC)
EN 1484
Daily
Chemical oxygen demand (COD)
No EN standard available
Total suspended solids (TSS)
EN 872
Total nitrogen (TN)
EN 12260
Total inorganic nitrogen (Ninorg)
Various EN standards available
Total phosphorus (TP)
Various EN standards available
Adsorbable organically bound halogens (AOX)
EN ISO 9562
Monthly
Metals
Cr
Various EN standards available
Cu
Ni
Pb
Zn
Other metals, if relevant
Toxicity
Fish eggs (Danio rerio)
EN ISO 15088
To be decided based on a risk assessment, after an initial characterisation
Daphnia (Daphnia magna Straus)
EN ISO 6341
Luminescent bacteria (Vibrio fischeri)
EN ISO 11348-1, EN ISO 11348-2 or EN ISO 11348-3
Duckweed (Lemna minor)
EN ISO 20079
Algae
EN ISO 8692, EN ISO 10253 or EN ISO 10710
Where large amounts of VOCs are handled, the screening and quantification of emissions from the installation by periodic campaigns with optical absorption-based techniques, such as Differential absorption light detection and ranging (DIAL) or Solar occultation flux (SOF), is a useful complementary technique to the techniques I to III.

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Source: https://www.legislation.gov.uk/eudn/2016/902/annex/division/3/division/2 (the official version)
Page: https://openlegislation.uk/eu-decision-2016-902/annex/division-3/division-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.