Section 209.23 - Conduct of meetings(a) Meetings to develop a voluntary agreement held pursuant to this subpart shall be open to all interested persons. Interested persons desiring to attend meetings under this subpart may be required pursuant to notice to advise the Administrator in advance.(b) Interested persons may, as set out in notice provided by the Administrator, present data, views, and arguments orally and in writing, subject to such reasonable limitations with respect to the manner of presentation as the Administrator may impose.