Visible emissions resulting from light off of new flames, blowing tubes and flues, or changing fuels while operating shall not be deemed violations provided the visible emissions do not exceed twenty-seven percent (27%) opacity for a period or periods aggregating not more than 6 minutes in any 60 minute period for units governed by 20.2.18.109 NMAC.
N.M. Admin. Code § 20.2.18.111