Approval and Promulgation of Implementation Plans and Operating Permits Program; State of Iowa

EPA is approving a revision to the Iowa State Implementation Plan (SIP) and Operating Permits Program submitted by the state of Iowa for the purpose of modifying and clarifying requirements for certain types of grain elevators. Specifically, the new rule revises the SIP to add special requirements for grain elevators, and the associated chapters for definitions and emission standards will be revised accordingly. The Iowa Department of Natural Resources (IDNR) is requiring that owners or operators of grain elevators apply best management practices and comply with the fugitive dust standard, as well as emission controls specified in required construction permits. These strategies will protect the ambient air and minimize the impact of emissions from each of the facilities.