The calculated area referred to in point 3 shall be extended to the appropriate regional level, where applicable, as determined by the competent authorities of the Member States concerned.
Déanfar an limistéar ríofa dá dtagraítear i bpointe 3 a leathnú go dtí an leibhéal réigiúnach iomchuí, i gcás inarb infheidhme é, de réir mar a chinnfidh údaráis inniúla na mBallstát lena mbaineann.