Revised Air Dispersion Modeling Guidance Now Available 9/6/2024 7:48:00 PM View Count 4383 The DNR has finalized the most recent updates to the air dispersion modeling guidance.
DNR Seeking Input on Proposed Updates to Air Dispersion Modeling Guidance 6/11/2024 12:35:00 PM View Count 2046 The DNR is seeking public input on proposed changes to our air dispersion modeling guidance.
Updated Air Dispersion Modeling Guidance and Form MD Available 8/25/2021 4:01:00 PM View Count 1683 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The updates remove references to the 24-hour and annual SO2 National Ambient Air Quality Standards (NAAQS), which have been revoked.
Updated Meteorological Data Available for Use in Air Dispersion Modeling 8/13/2021 1:47:00 PM View Count 1380 When the EPA released updates to the AERMOD modeling system on May 11, 2021, they included updates to AERMET, the preprocessor used to generate meteorological data for use in AERMOD.
Revisions to Guideline on Air Quality Models Effective 5/25/2017 8:42:00 AM View Count 3528 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.