Clean Air Act stationary source · ICIS-AIR LA0000002204700008
THE DOW CHEMICAL COMPANY - LOUISIANA OPERATIONS, Plaquemine, LA: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Major sourceEmissions classification
- No Violation IdentifiedCurrent violation status, as filed
- 6Compliance evaluations since January 1, 2017
- 1High-priority violations since January 1, 2017
- 9Formal enforcement actions since January 1, 2017
THE DOW CHEMICAL COMPANY - LOUISIANA OPERATIONS, at 21255 HWY 1, Plaquemine in Iberville County, Louisiana, is an operating major source of air pollution on EPA’s ICIS-AIR register. EPA’s file records its current violation status (ICIS-AIR’s high-priority violation field) as “No Violation Identified”. Iberville County is on EPA’s Green Book list of areas that do not meet a national air quality standard. The status and classification are as EPA’s facility file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the source’s current standing, quarter by quarter.
Identity
| Facility as filed | THE DOW CHEMICAL COMPANY - LOUISIANA OPERATIONS |
|---|---|
| ICIS-AIR ID | LA0000002204700008 |
| EPA facility registry ID | 110001244724 |
| Operating status | Operating |
| Emissions classification | Major source |
| Current violation status (ICIS-AIR high-priority violation field) | No Violation Identified |
| Address | 21255 HWY 1, Plaquemine, LA 70765 |
| County | Iberville County |
| In a nonattainment county | Yes (EPA Green Book) |
| Industry (NAICS) | Chemical manufacturing (NAICS 3251) |
| SIC code | 2821 |
| EPA region | 06 |
Cited to the EPA ICIS-AIR facility file (ECHO download).
Programs and pollutants
Velarion’s copy of EPA’s ICIS-AIR download does not include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs THE DOW CHEMICAL COMPANY - LOUISIANA OPERATIONS is under or the pollutants it is permitted for. The programs each evaluation and violation below was recorded under are shown with it. EPA’s free Detailed Facility Report lists both.
Compliance evaluations
- 6Evaluations since January 1, 2017
- 4Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| March 11, 2025 | FCE On-Site | State | National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); New Source Performance Standards; State or Local rule or regulation that is not federally-enforceable; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| March 10, 2021 | FCE On-Site | State | MACT Standards (40 CFR Part 63); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| February 28, 2020 | PCE Off-Site | U.S. EPA | Prevention of Accidental Release/General Duty Clause; Risk Management Program |
| June 28, 2019 | PCE Off-Site | U.S. EPA | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| December 17, 2018 | FCE On-Site | State | MACT Standards (40 CFR Part 63); National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 27, 2018 | FCE On-Site | State | MACT Standards (40 CFR Part 63); National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
Violations
- 1Violation determinations since January 1, 2017
- 1Of them high-priority
A high-priority violation (HPV) is the most serious class of Clean Air Act non-compliance an agency records; a federally reportable violation (FRV) is the next step down. Each row is one determination as EPA’s violation history files it.
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| December 20, 2018 | HPV day-zero determination | State | MACT Standards (40 CFR Part 63) |
Enforcement and penalties
9 formal enforcement actions since January 1, 2017, 5 of them with a penalty filed above zero. Each penalty is shown as EPA’s formal action file states it; “Not stated” means the file gives no figure, and $0 is a disclosed zero.
| Date | What EPA recorded | Agency | Penalty, as filed |
|---|---|---|---|
| August 26, 2026 | Administrative Order | State | $224,137 |
| May 1, 2025 | Administrative Order | State | $0 |
| July 6, 2023 | Administrative Order | State | $120,000 |
| June 10, 2021 | Civil Judicial Action | U.S. EPA | $3,000,000 |
| November 17, 2020 | CAA 113A Admin Compliance Order (Non-Penalty) | U.S. EPA | $0 |
| October 19, 2020 | CAA 113D1 Action For Penalty | U.S. EPA | $38,500 |
| March 10, 2020 | Administrative Order | State | $84,723 |
| September 27, 2019 | CAA 113A Admin Compliance Order (Non-Penalty) | U.S. EPA | $0 |
| December 21, 2018 | Administrative Order | State | $0 |
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| July 16, 2026 | Warning Letter | State |
| March 5, 2025 | Notice of Violation | State |
| January 2, 2025 | Notice of Noncompliance Issued | U.S. EPA |
| July 2, 2024 | Warning Letter | State |
| February 9, 2024 | Warning Letter | State |
| December 4, 2023 | Warning Letter | State |
| June 28, 2023 | Warning Letter | State |
| August 2, 2021 | Warning Letter | State |
| July 1, 2021 | Notice of Violation | State |
| March 17, 2021 | Warning Letter | State |
| September 17, 2020 | Warning Letter | State |
| May 5, 2020 | Warning Letter | State |
| August 28, 2019 | Notice of Violation | U.S. EPA |
Stack tests
- 8Stack tests since January 1, 2017
- 3Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| January 5, 2022 | Pass | State |
| July 22, 2021 | Pass | State |
| June 10, 2020 | Pass | State |
| January 29, 2020 | Fail | State |
| January 27, 2020 | Pass | State |
| November 7, 2019 | Pass | State |
| May 22, 2019 | Fail | State |
| May 22, 2019 | Fail | State |
Cited to the EPA ICIS-AIR evaluation, violation, stack test and enforcement files (ECHO download), events dated January 1, 2017 or later as loaded; up to 50 rows of each shown, newest first.
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How we handle your data → Privacy
EPA publishes a free Detailed Facility Report for every source on ECHO: its compliance status quarter by quarter, its evaluations, and its violations, enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter EPA facility registry ID 110001244724 there.
Nearby on the register
- Air-emissions sources in Iberville County
- Every source record in Iberville County, A to Z
- Air-emissions sources in Louisiana
- Every source record in Louisiana, A to Z
Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.