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This web page provides links to recent State Implementation Plan (SIP) submissions that Iowa has made to EPA. The web page includes links to information about recent Iowa designation recommendations for National Ambient Air Quality Standards (NAAQs) that were promulgated or revised starting in 2006.
Questions about the information on this web page may be directed to Jim McGraw at 515-725-9543 or Jim.McGraw@dnr.iowa.gov
On December 17, 2014, EPA published a proposal to make revisions to the primary and secondary National Ambient Air Quality Standards (NAAQS) for ozone. DNR submitted comments to EPA regarding the proposal on March 16, 2015.
On January 21, 2015, the Environmental Protection Commission approved a revision to the State Implementation Plan (SIP) to attain the lead National Ambient Air Quality Standards (NAAQS) in Council Bluffs. The transmittal letter and SIP revision are dated January 30, 2015, and were forwarded to the U.S. EPA on February 3rd for federal review.
On February 18, 2014, the Environmental Protection Commission approved a revision to the State Implementation Plan (SIP) to prevent future violations of the 24-hour fine particulate (PM2.5) National Ambient Air Quality Standards (NAAQS) in Muscatine. The SIP revision was forwarded to U.S. EPA on February 18th for federal notice and approval. EPA approved the SIP revision on December 1, 2014.