Updates to Base Case v4.10_PTox

Learn about the assumptions used for Base Case v4.10_PTox, the Integrated Planning Model (IPM) version that EPA used to analyze the proposed Mercury and Air Toxics Rule. For related information, see IPM Analysis of the Proposed Mercury and Air Toxics Standards.

Please note that the documentation for v4.10_PTox (presenting new modeling capabilities and updated input assumptions) supplements the more comprehensive documentation of EPA's IPM Base Case v4.10.

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Last updated on January 16, 2025