c) 12 ng par mètre cube normal de PCDD chlorés aux positions 2,3,7 et 8 et de PCDF chlorés aux positions 2,3,7 et 8, calculée conformément à l’article 10.
(c) 2,3,7,8-substituted PCDDs and 2,3,7,8-substituted PCDFs that exceeds 12 ng per normal cubic metre, when determined in accordance with section 10.