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Visibility and Haze

Results of the Integrated Planning Model (IPM) for the Final Amendments to the Regional Haze Regulations and Guidelines for BART Determinations

The IPM is a computer model that can be used to examine air pollution control policies for SO2 and NOX throughout the contiguous United States for the entire power sector. EPA used the IPM to model the impacts of BART on the electric power sector to develop the final BART rule.