Good engineering practice demonstrations

Before a new or revised emission limitation is approved that is based on a good engineering practice stack height that exceeds the height allowed by paragraph a or b of subdivision d of subsection 2 of section 33.1-15-18-01, the department shall notify the public of the availability of the demonstration study and must provide opportunity for public hearing on it. In no event may the department prohibit any increase in stack height or restrict the stack height of any source.