The Environmental Protection Agency (EPA) is proposing to grant a Clean Air Act (CAA or Act) petition submitted by the state of New Hampshire on December 24, 2025. Executive Summary of the EPA's Proposed Decision on the New Hampshire CAA Section 176A PetitionIII. Provisions Impacted by the New Hampshire CAA Section 176A PetitionV. The EPA's Technical Assessment of the New Hampshire CAA Section 176A PetitionA. Description of the Technical Analysis Included in the New Hampshire CAA Section 176A PetitionB. APA Administrative Procedure ActAGL Above Ground LevelBACT Best Available Control TechnologyCAA or Act Clean Air ActCAIR Clean Air Interstate RuleCSAPR Cross-State Air Pollution RuleCFR Code of Federal RegulationsCTG Control Techniques GuidelineD.C.