Ripening processes where ethylene gas is introduced into a room to promote the ripening of fruits, vegetables and other crops shall comply with this rule.
Heating shall be by indirect means utilizing low-pressure steam, hot water or warm air.
Approved warning signs indicating the danger involved and necessary precautions shall be posted on all doors and entrances to the premises.
Effective Date: November 1, 2011
Prior Effective Dates: 7/1/79; 6/1/85; 6/15/92; 7/1/93; 9/1/95; 3/30/98; 1/3/00; 9/1/05; 7/1/07