The competent authority may grant a derogation from the obligation to comply with the emission limit values provided for in paragraphs 2 and 3 in cases where a combustion plant using only gaseous fuel has to resort exceptionally to the use of other fuels because of a sudden interruption in the supply of gas and for this reason would need to be equipped with a waste gas purification facility. The period for which such a derogation is granted shall not exceed 10 days except where there is an overriding need to maintain energy supplies.
The operator shall immediately inform the competent authority of each specific case referred to in the first subparagraph.
▼M1
Member States shall inform the Commission immediately of any derogation granted under the first subparagraph, including the reasons justifying the derogation and the conditions imposed.
▼B