28. Only the following may be deposited in the trust account:
(1) amounts collected under section 42.1 of the Transport Act (chapter T-12);
(2) amounts necessary for the administration of the account.
A brokerage permit holder who deposits by mistake in the trust account an amount of money which is not authorized by this Regulation shall withdraw the amount. He shall also deposit in the trust account any amount withdrawn in contravention of this Regulation.