(20)When an environmental quality standard requires more stringent conditions than those that can be achieved by using the best available techniques, supplementary conditions should in particular be required by the permit, without prejudice to other measures that may be taken to comply with the environmental quality standards.
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New version applies from 25/06/2009 — introduced by Directive 2009/31/EC.
54 provisions change.
Recital 20 changes in this version: compare with the current text.