# Commission Implementing Decision (EU) 2017/2117 of 21 November 2017 establishing best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council, for the production of large volume organic chemicals (notified under document C(2017) 7469) (Text with EEA relevance), Division BAT 79:: BAT is to monitor emissions to water with at least the frequency given below and in accordance with EN standards. 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.

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

The minimum monitoring frequency may be reduced to once every month if adequate performance of the solids and copper removal is controlled by frequent monitoring of other parameters (e.g. by continuous measurement of turbidity).
Substance/Parameter
Plant
Sampling point
Standard(s)
Minimum monitoring frequency
Monitoring associated with
EDC
All plants
Outlet of the waste water stripper
EN ISO 10301
Once every day
BAT 80
VCM
Copper
Oxy-chlorination plant using the fluidised-bed design
Outlet of the pretreatment for solids removal
Various EN standards available, e.g. EN ISO 11885, EN ISO 15586, EN ISO 17294-2
Once every day
BAT 81
PCDD/F
No EN standard available
Once every 3 months
Total suspended solids (TSS)
EN 872
Once every day
Copper
Oxy-chlorination plant using the fluidised-bed design
Outlet of the final waste water treatment
Various EN standards available, e.g. EN ISO 11885, EN ISO 15586, EN ISO 17294-2
Once every month
BAT 14 and BAT 81
EDC
All plants
EN ISO 10301
Once every month
BAT 14 and BAT 80
PCDD/F
No EN standard available
Once every 3 months
BAT 14 and BAT 81

---
Source: https://www.legislation.gov.uk/eudn/2017/2117/annex/division/10/division/10.2/division/BAT+79 (the official version)
Page: https://openlegislation.uk/eu-decision-2017-2117/annex/division-10/division-10.2/division-BAT+79
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.