I have the same concern as Monsieur Lessard did. It may just be that I'm misreading this, but the way I read clause 4 suggests that the debt is recoverable in Federal Court or any other jurisdiction, which seems to me to suggest that's the start of the action that allows the recovery by the government, so that in fact the period of six years is quite apart from the repayment schedule of that debt.
If you could just clarify that for me, I'd appreciate it.