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Updated Air Dispersion Modeling Guidance and Form MD Available

Updated Air Dispersion Modeling Guidance and Form MD Available

  • 8/25/2021 4:01:00 PM
  • View Count 1448
For those projects that may require modeling, DNR updated three guidance documents and Form MD. The updates remove references to the 24-hour and annual SO2 National Ambient Air Quality Standards (NAAQS), which have been revoked.
Revisions to Guideline on Air Quality Models Effective

Revisions to Guideline on Air Quality Models Effective

  • 5/25/2017 8:42:00 AM
  • View Count 3311
On May 22, 2017 the United States Environmental Protection Agency (EPA) announced that the revisions to air dispersion modeling requirements in Appendix W of 40 CFR Part 51 became effective.  The final rule includes several new or updated model options that help alleviate model over-prediction or allow for more appropriate source characterization.