[F13. Characteristics of the potential impact U.K.
The potential significant effects of projects must be considered in relation to criteria set out under 1 and 2 above, and having regard in particular to:
the extent of the impact (geographical area and size of the affected population),
the transfrontier nature of the impact,
the magnitude and complexity of the impact,
the probability of the impact,
the duration, frequency and reversibility of the impact.]