(1) Where the Executive has advanced monies by way of ancillary State support and a relevant event or a deferred relevant event occurs, the Executive shall in accordance with section 19 or 20 and Schedule 2 calculate the amount due in relation to such support (in this section referred to as the "repayable amount") and give notice of that amount and particulars of how it is calculated to the relevant accountable person.
(a) The repayable amount together with any interest thereon shall be a debt due and payable to the Executive.
(b) The Revenue Commissioners shall act as agent for the Executive in respect of the collection of monies due to the Executive under this Act in relation to ancillary State support.
(3) The Executive shall within the relevant period referred to in subsection (4) notify the Revenue Commissioners of -
(a) the repayable amount,
(b) particulars of how that amount is calculated,
(c) particulars of the asset or assets against which the repayable amount is secured,
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