Except as provided in subsection (c) and paragraph (2) of this subsection, no facility or real property may be occupied by any migrant agricultural worker unless either a State or local health authority or other appropriate agency has certified that the facility or property meets applicable safety and health standards. No person who owns or controls any such facility or property shall permit it to be occupied by any migrant agricultural worker unless a copy of the certification of occupancy is posted at the site. The receipt and posting of a certificate of occupancy does not relieve any person of responsibilities under subsection (a). Each such person shall retain the original certification for three years and shall make it available for inspection and review in accordance with section 1862 of this title.

Notwithstanding paragraph (1) of this subsection, if a request for the inspection of a facility or real property is made to the appropriate State or local agency at least forty-five days prior to the date on which it is occupied by migrant agricultural workers and such agency has not conducted an inspection by such date, the facility or property may be so occupied.