Why don't I answer that question? We reviewed the Environment Canada results and provided feedback on the results. We do not undertake our own separate econometric analysis of their results, but we're satisfied they were generally reasonable with the caveats that the department issued with its report.
I believe the $8 billion you're referring to is the 0.5% of GDP that is estimated to be the economic cost of the government's regulatory plan. We also had a look at those estimates, and they seemed reasonable to us and generally consistent with prior work that the department has done and has published using general equilibrium models.