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  • Air Plan Approval; South Carolina; Second Planning Period Regional Haze Plan

    Federal Register · Rule · Dec 11, 2025

    They state that according to EPA's 2018 Modeling Guidance, the effectiveness of RRFs is dependent on the type of data used to calculate them. 24 24  EPA's Modeling Guidance for Demonstrating … Public Service Authority, Civil Action No. 2:04cv822 (D.S.C., Charleston Division) (filed June 24, 2004) at Paragraphs 64-66.

    90 FR 57636Environmental Protection AgencyNational Oceanic and Atmospheric Administration

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