In the Manufacturing District located in the area between Canal Street, Baxter Street, Walker Street, Centre Street, White Street and Broadway, residential use shall not be permitted.  However:

(a)        all dwelling units for which an alteration application to permit such use was filed with the Department of Buildings prior to December 16, 1982, and a temporary or permanent certificate of occupancy is obtained not later than December 16, 1984, shall be a permitted use; and

(b)        dwelling units which the Chairperson of the City Planning Commission determines were occupied on August 31, 1982, shall be a permitted use provided that a complete application to permit such use is filed by the owner of the building or the occupant of a dwelling unit in such building not later than August 31, 1983.   For the purposes of Article 7C of the New York State Multiple Dwelling Law, such a determination of residential occupancy shall be deemed to permit residential use as-of-right for such dwelling unit.