The director may revoke or suspend for a term, as hereinafter provided, any permit issued pursuant to this chapter upon the violation of any of the rules, requirements or restrictions of this chapter. No permit, however, shall be revoked until after a hearing shall have been held by the director to determine just cause for such revocation. At such hearing the permittee shall be given the opportunity to present evidence and argument against revocation or suspension. Notice of such hearing shall be given the permittee by mailing at least five (5) days prior to such hearing a written statement setting forth the ground of complaint, addressed to the permittee at the address on this permit. The decision of the director shall be final. After such hearing the director may suspend such permit for a term not to exceed sixty (60) days, may revoke the permit or may dismiss the complaint.