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Clean Air Act stationary source · ICIS-AIR LA0000002204700118

SHINTECH LOUISIANA LLC - SHINTECH PLAQUEMINE PLANT, Plaquemine, LA: Clean Air Act compliance record, inspections, violations, penalties

SHINTECH LOUISIANA LLC - SHINTECH PLAQUEMINE PLANT, at 26270 HWY 405 S, 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 filedSHINTECH LOUISIANA LLC - SHINTECH PLAQUEMINE PLANT
ICIS-AIR IDLA0000002204700118
EPA facility registry ID110000572675
Operating statusOperating
Emissions classificationMajor source
Current violation status (ICIS-AIR high-priority violation field)No Violation Identified
Address26270 HWY 405 S, Plaquemine, LA 70764
CountyIberville County
In a nonattainment countyYes (EPA Green Book)
Industry (NAICS)Chemical manufacturing (NAICS 3252)
SIC code2869
EPA region06

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 SHINTECH LOUISIANA LLC - SHINTECH PLAQUEMINE PLANT 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

DateWhat EPA recordedAgencyPrograms
December 11, 2024FCE On-SiteStateMACT Standards (40 CFR Part 63); 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
September 29, 2020FCE On-SiteStateMACT Standards (40 CFR Part 63); 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
September 26, 2018FCE On-SiteStateMACT Standards (40 CFR Part 63); 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; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits

Violations

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.

DateWhat EPA recordedAgencyPrograms
April 17, 2018HPV day-zero determinationStateNational Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); New Source Performance Standards

Enforcement and penalties

12 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.

DateWhat EPA recordedAgencyPenalty, as filed
September 3, 2026CAA 113D1 Action For PenaltyU.S. EPA$454,900
June 9, 2026CAA 113A Admin Compliance Order (Non-Penalty)U.S. EPA$0
March 16, 2026Administrative OrderState$27,991
August 26, 2025Administrative OrderState$0
August 9, 2022Administrative OrderState$346
October 29, 2021Administrative OrderState$0
November 30, 2020Administrative OrderState$80,000
November 30, 2020Administrative OrderState$0
February 12, 2020CAA 113D1 Action For PenaltyU.S. EPA$168,500
February 6, 2020CAA 113A Admin Compliance Order (Non-Penalty)U.S. EPA$0
January 30, 2020Administrative OrderState$0
April 18, 2018Administrative OrderState$0

Informal enforcement

DateWhat EPA recordedAgency
June 24, 2025Notice of Noncompliance IssuedU.S. EPA
March 19, 2024Warning LetterState
November 21, 2019Warning LetterState
July 2, 2019Warning LetterState

Stack tests

DateWhat EPA recordedAgency
December 30, 2025PassState
December 15, 2025PassState
December 15, 2025PassState
January 29, 2025PassState
January 28, 2025PassState
December 20, 2024PassState
September 26, 2024PassState
September 25, 2024PassState
September 24, 2024PassState
September 24, 2024PassState
September 24, 2024PassState
September 24, 2024PassState
January 4, 2024PassState
March 17, 2020PassState
March 17, 2020PassState
March 17, 2020PassState
March 17, 2020PassState
March 17, 2020PassState
March 17, 2020PassState
March 14, 2020PassState
March 6, 2020PassState
March 5, 2020PassState
March 4, 2020PassState
March 3, 2020PassState
February 7, 2019PassState
February 7, 2019PassState
February 7, 2019PassState
February 7, 2019PassState

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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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 110000572675 there.

Nearby on the register

Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.

What this page shows

This page covers the Clean Air Act compliance record for SHINTECH LOUISIANA LLC - SHINTECH PLAQUEMINE PLANT in Plaquemine, LA, an operating major source on EPA's ICIS-AIR register. The record lists 3 compliance evaluations, 1 high-priority violations, and 12 formal enforcement actions since January 1, 2017. Current violation status is listed as No Violation Identified.