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Division AVERAGING PERIODS FOR EMISSIONS TO WATER

United Kingdom

Original text. Later amendments are not shown.

Unless stated otherwise, the averaging periods associated with the BAT-AELs for emissions to water are defined as follows.

In special cases, there may be a need to apply a different sampling procedure (e.g. grab sampling)
Daily averageAverage over a sampling period of 24 hours taken as a flow-proportional composite samplef1 or, provided that sufficient flow stability is demonstrated, from a time-proportional sample
Yearly averageAverage of all daily averages taken within a year, weighted according to the daily production, and expressed as mass of emitted substances per unit of mass of products/materials generated or processed

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Footnotes

f1

In special cases, there may be a need to apply a different sampling procedure (e.g. grab sampling)