The owner or operator of a new (the fabrication, erection, installation, or modification of which was commenced on or after August 14, 1974) sulfur recovery plant that introduces less than twenty tons a day of sulfur into the plant shall not permit, cause, suffer or allow at any time sulfur emissions to the atmosphere in excess of 10 pounds of sulfur for every 100 pounds of sulfur introduced into the plant.
N.M. Admin. Code § 20.2.39.111