All monies posted by an applicant for review fees, engineering inspection fees, cash performance guaranties, cash maintenance guaranties, etc., required under this chapter which are to be held in trust (escrow) for a dedicated purpose shall be deposited by the Municipal Treasurer in accordance with provisions of N.J.S.A. 40:55D-53.1. Deposits with municipality; escrow; interest. The Municipality may, by regulation, return an amount not in excess of the amount permitted by statute for administrative and custodial expenses. All interest not retained by the Borough shall be applied to the account for the purpose originally specified unless otherwise prohibited by law.