Federal Air Programs

• NSPSAirPermitHub Summary

  New Source Performance Standards

  Performance standards for new, modified, and reconstructed sources.

  40 CFR Part 60
• NESHAPAirPermitHub Summary

  National Emission Standards for Hazardous Air Pollutants

  Hazardous air pollutant standards, including MACT and GACT source categories.

  40 CFR Parts 61 and 63
• Title VAirPermitHub Summary

  Title V Operating Permits

  Operating permits that consolidate a source's applicable requirements.

  40 CFR Parts 70 and 71
• NSRAirPermitHub Summary

  New Source Review

  Preconstruction permitting for new and modified sources.

  40 CFR 51.160–51.166; 40 CFR 52.21
• PSDAirPermitHub Summary

  Prevention of Significant Deterioration

  Major NSR for attainment and unclassifiable areas.

  40 CFR 52.21; 40 CFR 51.166
• NNSRAirPermitHub Summary

  Nonattainment New Source Review

  Major NSR for areas that do not meet air quality standards.

  40 CFR 51.165
• AP-42AirPermitHub Summary

  Compilation of Air Pollutant Emission Factors

  EPA's primary compilation of emission factors for stationary sources.

  EPA AP-42

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