Air Quality Dispersion Modeling working practices and policies

Proposed 2019 MPCA Air Quality Dispersion Modeling Working Practices Manual Revisions

It is that time of the year again! The MPCA is providing you with an opportunity to inspect and offer feedback on the proposed 2019 MPCA Air Quality Modeling Practices Manual revisions. The proposed 2019 Manual revisions can be found here:

You may provide feedback on the proposed 2019 Manual revisions to the MPCA Air Quality Modeling unit via email at The MPCA will accept your thoughts on this version of the proposed revisions until the close of business on July 18, 2018. The attachments are not included with this version as there are no proposed changes to these area of the Manual. Please feel free to contact the MPCA Modeling Unit if you have any questions about the proposed 2019 revisions or any other topic of concern.

The MPCA modeling unit will be hosting the Annual MPCA Air Modeling Open House meeting on Thursday, July 12, 2018 to discuss modeling practice updates, the proposed revisions, and two new working practices memorandums (Table 8-2 from Appendix W and Paved Roads). The meeting will take place at the MPCA Saint Paul Office at 520 Lafayette Rd. North in the Lower Lever Conference Room from 1:00pm – 4:00pm.

If you are interested in attending the meeting, we encourage you to RSVP via email at

Working practices for air quality dispersion modeling

PDF icon MPCA Air Dispersion Modeling Practices Manual — October 2017 (aq2-58)

Policies and working practices

Modeling policy documents

Modeling-related policies and practices

Other documents

If you cannot find a document you need, email the MPCA air dispersion modeling group: