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MOECC Decision to proceed on accounting for cumulative air quality levels in air emissions permits The Ontario Ministry of the Environment, Conservation and Parks (MECP) has decided to proceed with formally accounting for cumulative air quality levels in selected air...

Amendments to Ontarios Toxics Reduction Act Regulation O. Reg. 455/09. The MECP has proceeded with a number of changes to the toxic substances reduction planning process. Major amendments include changing the date for review and preparation of new versions of plans...

New dispersion model versions adopted April 1, 2018 On this date the MECP officially adopted AERMET/AERMOD v. 16216r, as an update to the previous regulatory version in Ontario (v. 14134). The MECP is requiring that all modelling should be carried out with the new...