Description

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.

Resources

Name	Format	Description	Link
Original metadata (https://data.ontario.ca)	HTML		https://data.ontario.ca/dataset/1ab20633-7c20-4004-b828-83ea25a8b3e9
Original metadata (https://data.ontario.ca/fr)	HTML		https://data.ontario.ca/fr/dataset/1ab20633-7c20-4004-b828-83ea25a8b3e9
Air Contaminants Benchmarks (ACB) List	CSV		https://files.ontario.ca/moe_mapping/downloads/1Air/Air_Contaminants_Benchmarks_List/Air_Contaminants_Benchmarks_List_2026a.csv
Air Contaminants Benchmarks List	CSV		https://files.ontario.ca/moe_mapping/downloads/1Air/Air_Contaminants_Benchmarks_List/Air_Contaminants_Benchmarks_List_2026.csv
Air Contaminants Benchmarks List Notes	PDF		https://files.ontario.ca/moe_mapping/downloads/1Air/Air_Contaminants_Benchmarks_List/Air_Contaminants_Benchmarks_List_Notes.pdf
Table 4 - Upper Risk Thresholds	CSV		https://files.ontario.ca/moe_mapping/downloads/1Air/Air_Contaminants_Benchmarks_List/Table4_ACB_Upper_Risk_Thresholds_2026a.csv
Table 5 - Removed B2 Values	CSV		https://files.ontario.ca/moe_mapping/downloads/1Air/Air_Contaminants_Benchmarks_List/Table5_ACB_Removed_B2_Values_2026a.csv
Table 6 - Removed B1 Values	CSV		https://files.ontario.ca/moe_mapping/downloads/1Air/Air_Contaminants_Benchmarks_List/Table6_ACB_Removed_B1_Values_2026a.csv

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