(a) Upon the expiration of thirty days after the selection of any superior site or, if a petition for an adjudicatory proceeding has been filed pursuant to section twenty-four, upon a final decision of the commissioner of the department of environmental protection approving the site selection, the board shall request the chief executive officer of each neighboring community to appoint a representative to the community supervisory committee of each site community. If the chief executive officer of a neighboring community fails to take such action within twenty-one days of receiving such request, the board shall make the appointment.
(b) Within sixty days of the selection of any superior site or, if a petition for an adjudicatory proceeding has been filed pursuant to section twenty-four, within thirty days of a final decision of the commissioner of the department of environmental protection approving the site selection, the board shall establish a field office within a site community outside the boundaries of the superior site.