(a) McIntosh, Cortland, Empire and Jonamac varieties may be represented as having been exposed to controlled atmosphere, provided that the controlled atmosphere rooms in which the apples are stored are filled, sealed and reduced to a five percent oxygen level within seven days from the date filling begins and the apples are held in such storage for a minimum of 60 days at not more than five percent oxygen.

(b) Cortland, Empire and Jonamac varieties may also be represented as having been exposed to controlled atmosphere, provided that the controlled atmosphere rooms in which the apples are stored are reduced to a five percent oxygen level within 20 days from the date of sealing and the apples are held in such storage for a minimum of 90 days at not more than five percent oxygen.

(c) McIntosh variety may also be represented as having been exposed to controlled atmosphere provided that the controlled atmosphere rooms in which the apples are stored are filled and sealed within 14 days from the date filling begins and are reduced to a five percent oxygen level within 20 days from the date of sealing and the apples are held in such storage for a minimum of 90 days at not more than five percent oxygen.