Siemer Milling Fined for Clean Air Act Violations After Chlorine Leak
EPA found the Kentucky flour bleaching facility failed to maintain required safety protocols for 24,000 lbs of chlorine, putting workers and the Hopkinsville community at risk after a toxic gas leak.
Siemer Milling Company operates a flour bleaching facility in Hopkinsville, Kentucky, storing up to 24,000 pounds of chlorine gas. After a chlorine leak in April 2022 reached dangerous levels inside a storage room, EPA inspectors found the company had failed to certify operating procedures annually, skipped required three-year compliance audits, maintained incomplete safety documentation, and misreported its actual chlorine inventory. The company settled for a $26,366 penalty and agreed to donate nearly $100,000 in emergency response equipment to local fire departments.
Another case where inadequate penalties may not deter future safety shortcuts.
The Allegations: A Breakdown
| 01 | The company failed to review and certify its operating procedures annually as required. The last certification occurred on June 16, 2021, making the facility overdue by the time of the July 2022 EPA inspection. | high |
| 02 | After a chlorine leak on April 1, 2022, caused by a leaking vacuum regulator and malfunctioning exhaust fan louvers, the facility failed to correct equipment deficiencies before further use or in a safe and timely manner. The incident report lacked any tracking system to document when recommended fixes were completed. | high |
| 03 | The company maintained management of change procedures that did not address the impact of changes on safety and health as required. One MOC included an action to draft a new procedure, but no documentation proved the procedure was ever created. | high |
| 04 | Facility personnel told EPA inspectors the company was not currently auditing its Risk Management Program every three years. The facility had no compliance audit reports in its files and had not developed any system to track audit findings or corrective actions. | high |
| 05 | The company misreported its maximum chlorine inventory. EPA inspectors observed twelve one-ton chlorine cylinders with a total capacity of 24,000 lbs, but the facility’s 2019 RMP registration stated a maximum capacity of only 20,000 lbs. | medium |
| 06 | The facility failed to update procedures or practices after a change occurred that affected a covered process, as required after any management of change action. | medium |
| 01 | The EPA did not discover the violations until conducting an on-site inspection on July 27, 2022, more than three months after the April chlorine leak and more than a year after the company missed its annual operating procedure certification. | high |
| 02 | The company’s self-reported data in its 2019 RMP registration understated its actual chlorine inventory by 4,000 lbs. The discrepancy was only caught when EPA inspectors physically counted the cylinders during the 2022 inspection. | high |
| 03 | The EPA and Department of Justice determined this case was appropriate for administrative penalty assessment even though the alleged violations occurred more than one year before the proceeding began, suggesting delayed enforcement action. | medium |
| 04 | The facility operates under a self-policing system where it must develop its own accident prevention plans and conduct its own compliance audits. This system failed when the company acknowledged it was not performing required three-year audits. | high |
| 05 | Local emergency responders may have been planning based on incomplete information. The facility’s underreporting of its chlorine inventory and failure to maintain current operating procedures meant first responders could have been unprepared for the actual level of risk. | medium |
| 01 | The $26,366 civil penalty represents a fraction of what robust compliance would cost. For a facility handling 24,000 lbs of chlorine daily in flour bleaching operations, comprehensive safety measures including annual certifications, three-year audits, and complete MOC documentation would require dedicated staff time and resources. | high |
| 02 | The company’s decision to skip required three-year compliance audits saved immediate costs but externalized risks onto workers and the surrounding community. These external costs do not appear on corporate balance sheets unless an incident forces accountability. | high |
| 03 | Even after the April 2022 chlorine leak, the company left malfunctioning exhaust fan louvers propped open rather than immediately replacing them. This temporary fix prioritized continued operations over proper safety controls. | high |
| 04 | The facility’s incomplete incident tracking meant management could avoid confronting the full scope of safety deficiencies. Without a systematic approach to resolving recommendations from the April incident report, the company avoided the expense of comprehensive corrective action. | medium |
| 05 | Underreporting chlorine inventory by 4,000 lbs in the 2019 RMP registration potentially reduced the level of regulatory scrutiny the facility faced. Lower reported quantities can trigger less frequent inspections and fewer regulatory requirements. | high |
| 06 | The combined financial impact of the $26,366 penalty plus the $99,362.70 supplemental environmental project totals approximately $125,728. For a commercial milling operation, this amount may be absorbed as a manageable cost of doing business rather than a significant deterrent. | medium |
| 01 | Chlorine is a toxic irritant. The April 1, 2022 leak reached 28 parts per million inside the storage room. Exposure to chlorine can cause severe respiratory distress, chemical pneumonia, and long-term pulmonary problems. | high |
| 02 | The malfunctioning exhaust fan louvers allowed chlorine vapor to accumulate in the storage room rather than being safely vented. This equipment failure, combined with the leaking vacuum regulator, created conditions where toxic gas could reach dangerous concentrations. | high |
| 03 | Workers at the facility face daily exposure risks when safety equipment fails and operating procedures are not kept current. The lack of annual certification meant procedures may not have reflected actual operating conditions or new hazards. | high |
| 04 | A major uncontrolled chlorine release could prompt evacuations, strain local healthcare infrastructure, and inflict long-term health consequences on nearby Hopkinsville residents. The facility’s 24,000 lbs capacity represents nearly ten times the 2,500 lb regulatory threshold. | high |
| 05 | Local emergency responders, including the City of Hopkinsville Fire Department and Pembroke Volunteer Fire Department, lacked adequate equipment to respond to chemical accidents at the facility. The settlement’s supplemental environmental project addresses this gap only after violations were discovered. | medium |
| 06 | The facility’s failure to maintain compliance audit reports meant there was no systematic verification that safety procedures were adequate and being followed. This created an environment where hazardous conditions could persist undetected. | high |
| 01 | Workers are the first exposed to harmful chemicals when safety systems fail. During the April 1, 2022 chlorine leak, employees faced acute exposure risks from 28 ppm concentrations in the storage room. | high |
| 02 | The company’s failure to certify operating procedures annually meant workers may have been following outdated or inaccurate instructions. Operating procedures must reflect current practices, including changes in process chemicals, technology, and equipment. | high |
| 03 | Employees worked in a facility where management did not conduct required three-year compliance audits to verify that safety procedures were adequate and being followed. This lack of oversight placed workers at continuous risk. | high |
| 04 | The incomplete incident tracking after the April chlorine leak meant workers could not be assured that identified hazards were being systematically addressed. The open work order for exhaust fan louvers indicated needed safety equipment remained unfixed. | medium |
| 05 | Workers may have limited bargaining power to demand better safety conditions, especially in smaller industrial communities where alternate employment opportunities are scarce. The economic dependency creates pressure to accept workplace risks. | medium |
| 01 | Hopkinsville residents live near a facility storing 24,000 lbs of chlorine gas where safety protocols repeatedly failed. The community faces ongoing risk that a small mechanical failure could escalate into a life-threatening release. | high |
| 02 | Local fire departments were inadequately equipped to respond to chemical accidents at the facility. The settlement requires Siemer Milling to donate emergency response equipment, but this addresses the gap only after violations were already committed. | high |
| 03 | The community’s emergency planning may have been based on inaccurate information. The facility’s 2019 RMP registration understated chlorine inventory by 4,000 lbs, potentially leaving local responders unprepared for the actual level of risk. | medium |
| 04 | Residents had no way to know about the company’s compliance failures until the EPA inspection and subsequent enforcement action became public. The facility’s missing audit reports and incomplete MOC documentation remained hidden from community view. | medium |
| 05 | A major chlorine release could cause property values to plummet, disrupt the local economy, and create health impacts lasting years. These potential costs fall disproportionately on community members who have no role in the company’s safety decisions. | high |
| 06 | The City of Hopkinsville Fire Department and Pembroke Volunteer Fire Department are receiving equipment including UAV drones with thermal capabilities, chlorine gas detectors, Level A hazmat suits, and decontamination kits through the settlement, highlighting what was previously lacking. | medium |
| 01 | The $26,366 civil penalty may not create a meaningful economic deterrent for a commercial milling operation. The fine is small relative to what comprehensive compliance would cost or what revenue the facility generates. | high |
| 02 | The settlement allows the company to resolve liability without admitting any violation. The consent agreement explicitly states that Respondent neither admits nor denies the factual allegations and does not admit any violation. | medium |
| 03 | The company certified that all violations have been corrected and it is currently in compliance, but the settlement provides limited mechanism for ongoing independent verification. Future compliance depends largely on the same self-policing system that already failed. | medium |
| 04 | Corporate officials face no personal liability under this settlement. The consent agreement binds the company but does not impose individual consequences on executives or managers whose decisions may have led to the compliance failures. | high |
| 05 | The settlement treats six separate regulatory violations as a package resolved by a single penalty and supplemental project. This bundling may minimize the perceived seriousness of each individual failure. | medium |
| 06 | The consent agreement acknowledges this enforcement action will be considered in evaluating the company’s compliance history in any subsequent enforcement actions, but this creates accountability only if future violations occur and are detected. | low |
| 07 | Maximum civil penalties under the Clean Air Act are significantly higher than what was assessed. Each day a violation continues can constitute a separate violation, but the settlement does not calculate penalties on a per-day basis for the multi-year compliance failures. | high |
| 01 | The company’s last annual certification of operating procedures occurred on June 16, 2021. By the time of the EPA inspection in July 2022, the facility was more than one year overdue, suggesting compliance deadlines were treated as flexible. | high |
| 02 | The EPA issued a Notice of Potential Violation and Opportunity to Confer on April 20, 2023, nearly nine months after the July 2022 inspection. The company held meetings with EPA on May 3, 2023 and November 15, 2023 before reaching settlement, extending the timeline further. | medium |
| 03 | After the April 1, 2022 chlorine leak, the incident report indicated the facility would contact its contractor to replace equipment and order new louvers. By the time of the July inspection three months later, a work order showed the parts had not yet been received and louvers remained propped open. | high |
| 04 | The consent agreement was not filed until August 19, 2024, more than two years after the EPA inspection that uncovered the violations. During this period, the company continued operations under the same Risk Management Program framework that had failed. | medium |
| 05 | The company had not conducted required three-year compliance audits, meaning violations of audit requirements could have persisted for multiple three-year cycles before detection. The self-policing system created space for indefinite delay. | high |
| 01 | Siemer Milling’s violations demonstrate how a self-policing regulatory system can fail when companies prioritize cost-cutting over safety. The facility admitted it was not conducting required audits, had not certified procedures annually, and maintained incomplete documentation. | high |
| 02 | The settlement’s financial impact totaling approximately $125,728 may be insufficient to deter similar behavior by this or other facilities. When penalties are manageable expenses rather than existential threats, companies can treat compliance as optional. | high |
| 03 | Local communities and workers bear the real costs of corporate compliance failures. Hopkinsville residents faced exposure risks from 24,000 lbs of chlorine handled with inadequate safety protocols, while emergency responders lacked proper equipment until forced by settlement. | high |
| 04 | The case reveals systemic gaps in EPA oversight capacity. The agency discovered violations only through a physical inspection more than a year after the company missed key compliance deadlines, and the misreported inventory was caught only by physically counting cylinders. | high |
| 05 | This pattern repeats across industries where companies handle hazardous materials. The combination of underfunded enforcement, self-policing requirements, modest penalties, and delayed accountability creates structural incentives for corner-cutting. | high |
| 06 | Real corporate accountability would require penalties proportional to revenue, personal liability for executives, mandatory independent auditing, real-time public reporting of chemical inventories and incidents, and community oversight of high-risk facilities. | high |
Timeline of Events
Direct Quotes from the Legal Record
“The Facility last certified its operating procedures on June 16, 2021. As such, the Facility is overdue to certify that its operating procedures are current and accurate.”
💡 The company failed to meet a basic annual safety requirement, leaving workers and the community exposed to outdated procedures for over a year
“On April 1, 2022, the alarm in the chlorine storage room alarmed and chlorine concentrations inside the room reached 28 parts per million. The Facility conducted an incident inspection, which found that the release was caused by a leaking vacuum regulator. Moreover, the chlorine room exhaust fan louvers did not operate as intended, allowing chlorine vapor to accumulate in the storage room.”
💡 Multiple safety system failures combined to create hazardous conditions, demonstrating the real-world consequences of inadequate maintenance
“The incident inspection report does not contain a table or other tracking system to identify when these report recommendations were resolved. The Facility did produce an open work order (#4371) for the exhaust fan louvers, which indicated that the part had not yet been received. In the meantime, the Facility is leaving the louvers propped open.”
💡 Even after discovering serious equipment failures, the company failed to systematically track repairs, leaving critical safety equipment in a makeshift temporary fix
“The inspection team reviewed management of change (MOC) No. 20171219-002. The MOC did not include documentation addressing the impact of the change on safety and health.”
💡 Required safety reviews were skipped entirely, meaning new hazards could be introduced without anyone evaluating the risks
“Facility personnel indicated that the Facility is not currently auditing its RMP program every three years to verify that its RMP procedures are adequate and are being followed. As such, the Facility did not have any compliance audit reports in its files and has not developed a tracking system to document compliance audit findings and its corrective actions.”
💡 The company admitted it completely abandoned a core regulatory requirement designed to catch and fix safety problems before accidents occur
“Inspectors observed twelve (12) one-ton (2000-lb) capacity chlorine cylinders in the Facility’s chlorine storage room (arranged in two rows of six cylinders), for a maximum capacity of 24,000 pounds (lbs) of chlorine. The Facility’s Maximum Intended Inventory section of the Process Safety Information confirmed 24,000 lbs maximum quantity. The Facility’s 2019 RMP registration indicates that it has a maximum capacity of 20,000 lbs of chlorine.”
💡 The company understated its dangerous chemical inventory by 4,000 lbs, potentially reducing regulatory scrutiny and misleading emergency responders
“The MOC No. 20171219-002 included an action to draft a new procedure, but the action resolution was not tracked, and no additional information was provided. The inspection team and Facility representatives were not able to determine what procedure, if any, was developed as a result of this MOC.”
💡 Management of change processes are worthless if required follow-up actions disappear without documentation or implementation
“Having found that settlement is consistent with the provisions and objectives of the Act and applicable regulations, the Parties have agreed to settle this action pursuant to 40 C.F.R. § 22.18 and consent to the entry of this CAFO without Respondent’s admission of violation or any adjudication of any issues of law or fact herein.”
💡 The company pays a penalty but admits no wrongdoing, a common pattern that allows corporations to avoid public acknowledgment of misconduct
“The EPA and the United States Department of Justice jointly determined that this matter, although it involves alleged violations that occurred more than one year before the initiation of this proceeding, is appropriate for an administrative penalty assessment.”
💡 The enforcement timeline reveals significant delays between violations and consequences, reducing deterrent effect
“by executing this CAFO, certifies to the best of its knowledge that Respondent is currently in compliance with all relevant requirements of the Act and its implementing regulations, and that all violations alleged herein, which are neither admitted nor denied, have been corrected”
💡 The company claims all problems are fixed while simultaneously refusing to admit the problems existed, a contradiction that undermines accountability
“Section 112(r) of the Act 42 U.S.C. § 7412(r), addresses the prevention of release of substances listed pursuant to Section 112(r)(3) of the Act, 42 U.S.C. § 7412(r)(3), and other extremely hazardous substances. The purpose of this section is to prevent the accidental release of extremely hazardous substances and to minimize the consequences of such releases.”
💡 The foundational purpose of the law is to prevent exactly the kind of chlorine leak that occurred at this facility
“The SEP advances at least one of the objectives of the CAA Section 112(r), Prevention of Accidental Releases, and the implementing regulations contained in 40 C.F.R. Part 68 Chemical Accident Prevention Provisions, by helping to reduce risks to the public associated with potential chemical accidents by better equipping the City of Hopkinsville Fire Department and the Pembroke Volunteer Fire Department to respond to such accidents.”
💡 The settlement tacitly admits local emergency responders were inadequately equipped to handle the chemical risks this facility posed to the community
Frequently Asked Questions
read me:
this company got an app on the Apple App Store too lmao:
https://apps.apple.com/us/app/siemer-milling-company/id1449998743
💡 Explore Corporate Misconduct by Category
Corporations harm people every day — from wage theft to pollution. Learn more by exploring key areas of injustice.
- 💀 Product Safety Violations — When companies risk lives for profit.
- 🌿 Environmental Violations — Pollution, ecological collapse, and unchecked greed.
- 💼 Labor Exploitation — Wage theft, worker abuse, and unsafe conditions.
- 🛡️ Data Breaches & Privacy Abuses — Misuse and mishandling of personal information.
- 💵 Financial Fraud & Corruption — Lies, scams, and executive impunity.