Alleged Clean Air Violation Notice Issued

EPA has issued a notice of violation to Grain Processing Corporation, Inc. (GPC), alleging the company has violated the Iowa State Implementation Plan and the federal Clean Air Act for issues related to construction and operating permits issued for its facility at Muscatine, Iowa.

EPA Region 7 has coordinated with the State of Iowa on the notice of violation, which is separate from a civil lawsuit filed December 1, 2011, by the Iowa attorney general, which alleges that GPC's facility violated the state's air pollution laws.

GPC’s plant at 1600 Oregon Street in Muscatine processes corn into ethanol, corn sweeteners and beverage alcohol.

EPA’s notice of violation to GPC specifically alleges that between 2007 and 2011, its facility repeatedly violated limits on air emissions opacity that were set forth in the company’s 1995 amended construction permit and 2003 operating permit. The notice further alleges GPC failed to notify the Iowa Department of Natural Resources of the opacity exceedances, and failed to address the exceedances in its annual compliance certifications for the years 2007 through 2011.

EPA’s notice to GPC does not address penalties, but indicates the Agency will consider additional enforcement action, which could include penalties, to ensure the facility complies with applicable laws and regulations. The notice can be viewed online at

The notice was accompanied by an official request for information, which seeks details of GPC’s compliance with the Facility Response Plan requirements and Spill Prevention and Countermeasures Control requirements of the federal Clean Water Act. Information provided by the company in response to EPA’s request will be used by the Agency in evaluating GPC’s compliance. GPC’s response to EPA’s information request is due within 15 days.

Download Center

  • Your Guide to Environmental Metrics that Drive Performance

    Translating sustainability into action starts with implementing the right metrics to assess your environmental risk and performance. Learn how to design metrics that improve your decision-making process and drive enterprise performance.

  • Unpacking ESG: 6 Questions You Were Too Afraid to Ask

    Environmental and Sustainability experts from Arcadis and Cority answer 6 of the most pressing questions EHS professionals have about getting started with Environmental, Social, and Governance (ESG) reporting.

  • 5 Keys to Best-in-Class Chemical Management

    Running a safe chemical program is challenging and complex: from knowing what's on-site to proper handling and disposal - all while navigating regulatory changes. Learn the best ways to mitigate chemical risk, get the most value out of your data, and gain buy-in for a chemical management solution.

  • Streamline Your Air Emissions Management

    See how consolidating all your emissions management functions into one centralized system can help you streamline your operations, more easily maintain compliance, and achieve greater time and cost savings.

  • A Crash Course in Creating the Right Environmental Scoring System

    Learn how to develop the right environmental scoring system so you can easily benchmark performance across all your facilities and gain a holistic view of your environmental programs.

  • Industry Safe