2. If the condition constituting the nuisance is such that unless
immediately cured irreparable damage may be caused to the building or it
constitutes an imminent danger to its occupants, or the occupants of
adjoining properties then the order to show cause may be returnable in
the discretion of the court in less than five days, and in such case,
service may be made on the owner, mortgagee and lienor by posting a copy
thereof in a conspicuous place on the premises where the nuisance exists
and by mailing a copy in the case of the owner to the address filed with
the department and in the case of the mortgagee and lienor to the
address recorded. If a receiver be appointed as hereinafter provided,
and service shall not have been made in accordance with subparagraph
one, then his appointment shall be temporary only and expire not more
than thirty days thereafter unless, prior to the expiration of such
thirty days, the department shall serve notice on the owner, mortgagees
and lienors in the manner provided for in subparagraph one hereof of
intention to apply to the court at a date fixed in such notice and not
less than five days after the service of such notice, for an extension
of said receivership. In such event the period of the appointment of the
temporary receiver shall be deemed to be extended for a further period
of fifteen days. In addition to the requirements set forth in
subparagraph one, such notice shall also contain a statement of any
expenditures made or obligations incurred by the receiver during the
period of his temporary appointment. On the date fixed in such notice,
the court shall determine whether or not to extend the period of
receivership and such determination shall be made as if the application
were an original one for the appointment of a