I don't think we have any objections to the stated goal of promoting pollution prevention, in that the act itself already requires ministers to give priority to pollution prevention when risk-managing substances.
The challenge with this amendment is that it would require a government to require pollution prevention plans with respect to every listed substance. In fact, pollution prevention planning is only one way to promote pollution prevention. It's a bit unfortunate that the term “pollution prevention planning” has become confused with the overall concept of pollution prevention.
When we assess a substance as being toxic and needing risk management, CEPA gives us access to a wide range of risk management instruments, including the authority to require plans, but it also of course authorizes us to regulate, including to prohibit the use of a substance, which is the most effective and powerful way to achieve pollution prevention. It ensures that the substance is not used and therefore never enters the environment.
Requiring the ministers to use this one tool for every substance in fact would be an unnecessary imposition, in that there are more stringent and more immediately effective measures that can be used and have been used to achieve the overarching goal of pollution prevention.