30. In its decision, the council of arbitration may decide the arbitration expenses, which are the expenses incurred by the Order for the arbitration. The total expenses may not exceed 10% of the amount of the invoice.
Where the account in dispute is upheld in whole or in part, or where a reimbursement is granted, the council of arbitration may add thereto interest and an indemnity calculated in accordance with articles 1618 and 1619 of the Civil Code from the date of the application for conciliation.