Any person who breaches regulation 7 is liable to a civil penalty that is the sum of—
(a) any units received in respect of the proportion of the forest sink harvested in breach of regulation 7; and
(b) any additional units calculated on the basis of an annual compounding rate of 10% applied to each year's increase in carbon stock from that proportion of the forest harvested in breach of regulation 7 for the period beginning on the date that the covenant came into force and ending on the date that the breach occurred.