Well, as I heard the amendment it would refer to regulations made under subsection 93(1), which is the authority to regulate toxic substances, including air pollutants and GHGs; 103.05(2), which is the authority to establish a carbon budget; and 103.07(2)(b), which is the requirement to establish air emission standards.
The potential connection between fuel standards and toxic standards is clear, and the connection between fuel standards and air emission standards under 103.07 could be made. I'm not sure about the rationale to link this provision to 103.05(2), which is the authority to establish a carbon budget.