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Publisher-reported update: 2026-05-13

Standards, guidelines and screening levels for assessing point of impingement concentrations of air contaminants Get information on the ministry’s standards, guideline values and screening levels that are used to assess point of impingement concentrations of contaminants released into the air. These are used primarily to prepare an Emission Summary and Dispersion Modelling (ESDM) report. This dataset is draft and in development.

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Government of Canada Open Data
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Government of Ontario