a. When the department of health and mental hygiene issues a commissioner's order to abate pursuant to section 173.13 of the New York city health code or a successor rule that addresses lead-based paint hazards or unsafe lead paint in a specific dwelling unit in a multiple dwelling, the department, within 15 days of the receipt of such order, shall notify the owner of the multiple dwelling where the dwelling unit is located that the owner shall, within 45 days of the department's notice, provide to the department all records required to be maintained under this article. Upon the department's receipt of those records and a determination that there may exist uncorrected lead-based paint hazards in dwelling units where a child of applicable age resides, the department within 10 days of the end of the record order production period, shall attempt to inspect units where a child of applicable age resides to determine whether there are any violations of sections 27-2056.6 or 27-2056.8. At the first such attempt, the department shall post a notice in a conspicuous manner in the building lobby of the multiple dwelling, advising occupants of the date the department will return to attempt to inspect dwelling units the department was unable to inspect during the first attempt, and the building owner shall post such notice on each floor within 10 feet of the elevator, or, in a building where there is no elevator, within 10 feet of or in the main stairwell on such floor. When the department is unable to inspect a dwelling unit pursuant to this section, the department shall leave at such unit the pamphlet described in subdivision b of section 17-179 and a notice that provides a contact number for occupants to call to reschedule the inspection. Any notice required by this subdivision