The Iowa DNR invites the public to provide comments on the 2022 report for the sulfur dioxide (SO2) Data Requirements Rule (DRR). The DRR requires an annual assessment of recent SO2 emissions in any area where air quality modeling of actual emissions provided the basis for designating the area attainment for the 2010 1-hour SO2 national ambient air quality standard (NAAQS).

Two areas in Iowa are currently subject to this review, Louisa County and Pottawattamie County. The DNR is recommending no additional modeling to conclude that these areas continue to attain the 2010 1-hour SO2 NAAQS. This recommendation is based on documented reductions in SO2 emissions.

The report, due to the Environmental Protection Agency by July 1, is available on the Air Quality Bureau’s Public Participation page under public input. Written comments must be received by Wednesday, June 15, and may be sent to Jessica Reese McIntyre.  For Jessica’s contact information visit kciiradio.com and click on this story. Phone at (515) 725-9547 or jessica.reesemcintyre@dnr.iowa.gov.