2 Va. Admin. Code § 5-585-2900
Heating, ventilating, and air conditioning systems shall be designed and installed so that make-up air intake and exhaust vents do not cause contamination of food, food-contact surfaces, equipment, or utensils.
§ 3.2-5121 of the Code of Virginia.
Derived from Virginia Register Volume 24, Issue 2, eff. October 16, 2007.