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4144170 
Technical Report 
EPA Report 
Integrated review plan for the secondary national ambient air quality standards for ecological effects of oxides of nitrogen, oxides of sulfur and particulate matter 
U.S. Environmental Protection Agency :: U.S. EPA 
2017 
U.S. Environmental Protection Agency 
Research Triangle Park, NC 
EPA-452/R-17-002 
102 
English 
The U.S. Environmental Protection Agency (EPA) is currently reviewing the air quality criteria and associated secondary National Ambient Air Quality Standards (NAAQS) for oxides of nitrogen, oxides of sulfur, and particulate matter (PM). In any such review, the purpose of the Integrated Review Plan (IRP) document is to communicate the current plan for the review, the process for conducting the review and key policy-relevant scientific and technical issues that will guide the review. In the context of the secondary standards for oxides of nitrogen, oxides of sulfur and PM, the scope for this IRP pertains to the protection of the public welfare from adverse effects related to ecological effects. 
PB2017101373