The county council shall enact by ordinance rules of procedure governing the time, place and conduct of its meetings and hearings, which shall include at least one evening meeting in each council district each calendar year, and the introduction, publication, consideration and adoption of ordinances. The rules of procedure shall provide for public access to agendas, minutes and voting records of individual county council members. The rules of procedure shall also provide for an opportunity for public comment during any meeting of the county council. All meetings shall be open to the public except to the extent executive sessions are authorized by state law. Unless the council finds that an emergency exists, a public hearing must be held in the evening on the proposed budget presented by the county executive pursuant to Section 6.50 and on any proposed ordinance to adopt, amend, or repeal a county comprehensive plan.