8. A regional director, the secretary general of the department, a service head, a division head, a correctional services director, a warden of a house of detention, an assistant warden of a house of detention, an administrative services director, a professional services director, a transportation and appearance services director and a professional correctional services director are authorized to sign, for the purpose of fulfilling their mandate, up to the amounts specified, where applicable,(1) $25,000:(a) supply contracts;
(b) professional or auxiliary services contracts; and
(2) $15,000, contracts for the administration of immovables.