New York Codes, Rules and Regulations
Title 1 - DEPARTMENT OF AGRICULTURE AND MARKETS
Chapter VI - Food Control
Subchapter E - Retail Food Stores (Article 19 Agriculture and Markets Law)
Part 271 - Retail Food Store Sanitation Regulations
Subpart 271-7 - Construction and Maintenance of Physical Facilities
Section 271-7.16 - Ventilation-general

All rooms shall have sufficient ventilation to keep them free of excessive heat, steam, condensation, vapors, obnoxious odors, smoke and fumes. Ventilation systems shall be installed and operated according to law and, when vented to the outside, shall not create a harmful or unlawful discharge. Intake and exhaust air ducts shall be maintained to prevent the entrance of dust, dirt and other contaminating materials.