Modeling Guidance Documents Page

• Air Quality Analysis Checklist (pdf) (74.93 KB, 12/20/2016)
  Air Quality Analysis Checklist
• 2005 Guideline on Air Quality Models (pdf) (802.89 KB, 11/09/2005)
  2005 Guideline on Air Quality Models
• 2017 Guideline on Air Quality Models (pdf) (742.98 KB, 01/17/2017)
  2017 Guideline on Air Quality Models
• Guidance Concerning the Implementation of the 1-hour NO2 NAAQS for the Prevention of Significant Deterioration Program (pdf) (1.32 MB, 06/29/2010)
  Guidance Concerning the Implementation of the 1-hour NO2 NAAQS for the Prevention of Significant Deterioration Program
• Guidance Concerning the Implementation of the 1-hour SO2 NAAQS for the Prevention of Significant Deterioration Program (pdf) (971.46 KB, 08/23/2010)
  Guidance Concerning the Implementation of the 1-hour SO2 NAAQS for the Prevention of Significant Deterioration Program
• Example Air Quality Analysis Checklist (pdf) (111.28 KB, 04/18/2003)
  Example Air Quality Analysis Checklist from Appendix C to the 2003 Guideline on Air Quality Models
• DRAFT Guidance for Ozone and Fine Particulate Matter Permit Modeling (pdf) (4.79 MB, 02/10/2020, 457-P-20-002)
  DRAFT Guidance for Ozone and Fine Particulate Matter Permit Modeling
• Guidance on the Use of Models for Assessing the Impacts of Emissions from Single Sources on the Secondarily Formed Pollutants: Ozone and PM2.5 (pdf) (266.21 KB, 12/02/2016, 454-R-16-005)
  Guidance on the Use of Models for Assessing the Impacts of Emissions from Single Sources on the Secondarily Formed Pollutants: Ozone and PM2.5
• Guidance on the Development of Modeled Emission Rates for Precursors (MERPs) as a Tier 1 Demonstration Tool for Ozone and PM2.5 under the PSD Permitting Program (pdf) (3.36 MB, 04/30/2019, 454-R-19-003)
  Guidance on the Development of Modeled Emission Rates for Precursors (MERPs) as a Tier 1 Demonstration Tool for Ozone and PM2.5 under the PSD Permitting Program
• Screening Procedures for Estimating the Air Quality Impact of Stationary Sources Revised (pdf) (2.64 MB, 10/01/1992, 454-R-92-019)
  Screening Procedures for Estimating the Air Quality Impact of Stationary Sources Revised
• Guideline for Determination of Good Engineering Practice Stack Height Revised (pdf) (4.1 MB, 06/01/1985, 450-4-80-023R)
  Guideline for Determination of Good Engineering Practice Stack Height Revised
• Guidance for PM2.5 Permit Modeling (pdf) (2.27 MB, 05/22/2014, 454-B-14-001)
  Guidance for PM2.5 Permit Modeling
• Area Source Estimated Concentrations Related Update (pdf) (25.42 KB, 03/28/2002)
  Area Source Estimated Concentrations Related Update
• DRAFT Guidance on Ozone and PM2.5 Permit Modeling Webinar (pdf) (812.68 KB, 03/12/2020)
  DRAFT Guidance on Ozone and PM2.5 Permit Modeling Webinar
• Protocol for Determining the Best Performing Model (pdf) (1.16 MB, 09-1992, 454-R-92-025)
  Protocol for Determining the Best Performing Model
• NO2 ISR Database Read Me (pdf) (98.07 KB, 09-10-2015)
  NO2 ISR Database Read Me
• Reassessment of the Interagency Workgroup on Air Quality Modeling (IWAQM) Phase 2 Summary Report: Revisions to Phase 2 Recommendations (pdf) (1.23 MB, 12-19-2016, 454-R-16-007)
  Reassessment of the Interagency Workgroup on Air Quality Modeling (IWAQM) Phase 2 Summary Report: Revisions to Phase 2 Recommendations
• Technical Support Document (TSD) for AERMOD-Based Assessments of Long-Range Transport Impacts for Primary Pollutants (pdf) (4.81 MB, 12-20-2016, 454-B-16-007)
  Technical Support Document (TSD) for AERMOD-Based Assessments of Long-Range Transport Impacts for Primary Pollutants
• Status of Guidance for Ozone and PM2.5 Permit Modeling (pdf) (440.21 KB, 01-17-2017)
  Status of Guidance for Ozone and PM2.5 Permit Modeling
• Technical Support Document (TSD) for Replacement of CALINE3 with AERMOD for Transportation Related Air Quality Analyses (pdf) (575.29 KB, 12-09-2016, 454-B-16-006)
  Technical Support Document (TSD) for Replacement of CALINE3 with AERMOD for Transportation Related Air Quality Analyses
• First Federal Register Extension of Effective Date to March 21, 2017 (pdf) (194.76 KB, 01-26-2017)
  First Federal Register Extension of Effective Date to March 21, 2017
• Second Federal Register Extension of Effective Date to May 22, 2017 (pdf) (190.33 KB, 03-20-2017)
  Second Federal Register Extension of Effective Date to May 22, 2017
• Appendix W - Fact Sheet (pdf) (20.76 KB, 12-21-2016)
  Appendix W - Fact Sheet