ICIS-AIR LA0000002201900127

WESTLAKE POLYMERS LLC - POLYETHYLENE MANUFACTURING COMPLEX, Sulphur, LA: Clean Air Act compliance record, inspections, violations, penalties

This record in brief

WESTLAKE POLYMERS LLC - POLYETHYLENE MANUFACTURING COMPLEX (ICIS-AIR LA0000002201900127) is an operating major source of air pollution in Calcasieu County, LA. EPA’s ICIS-AIR files list 7 compliance evaluations, 0 high-priority violations, and 6 formal enforcement actions for this source since January 1, 2017. EPA files its current violation status as “No Violation Identified”.

OperatingOperating status
Major sourceEmissions classification
No Violation IdentifiedCurrent violation status, as filed
7Compliance evaluations since January 1, 2017
0High-priority violations since January 1, 2017
6Formal enforcement actions since January 1, 2017

WESTLAKE POLYMERS LLC - POLYETHYLENE MANUFACTURING COMPLEX is on EPA’s ICIS-AIR register at 3525 CITIES SERVICE HWY, Sulphur in Calcasieu County, Louisiana: operating status operating, emissions classification major source, current violation status “No Violation Identified”. Calcasieu County is on EPA’s Green Book list of areas that do not meet a national air quality standard.

What stands out

The newest of the 17 events on file is a formal enforcement action dated January 7, 2026.
Its events on file run from February 20, 2017 through January 7, 2026.
Of the 6 formal enforcement actions on file, 4 carry a filed penalty above zero. The largest on file is $750,000, filed October 26, 2022.
Of its 7 compliance evaluations on file, 4 are a full compliance evaluation.
The register holds 277 air-emissions sources in Calcasieu County, Louisiana.

Every line is computed by formula from the record’s stored figures; nothing is estimated.

Identity

Facility as filed	WESTLAKE POLYMERS LLC - POLYETHYLENE MANUFACTURING COMPLEX
ICIS-AIR ID	LA0000002201900127
EPA facility registry ID	110000449587
Operating status	Operating
Emissions classification	Major source
Current violation status (HPV field)	No Violation Identified
Address	3525 CITIES SERVICE HWY, Sulphur, LA 70665
County	Calcasieu County
In a nonattainment county	Yes (EPA Green Book)
Industry (NAICS)	Chemical manufacturing (NAICS 3251)
SIC code	2821
EPA region	06

Programs and pollutants

The program, pollutant and Title V files are not loaded: what this page covers.

Compliance evaluations

7Evaluations since January 1, 2017
4Full compliance evaluations

Date	What EPA recorded	Agency	Programs
May 13, 2025	FCE On-Site	State	MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
September 29, 2021	FCE On-Site	State	MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
March 19, 2019	FCE On-Site	State	MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits
December 5, 2018	PCE Off-Site	State	State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
August 8, 2018	PCE Off-Site	State	MACT Standards (40 CFR Part 63); State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
April 29, 2018	PCE Off-Site	U.S. EPA	Federal Implementation Plan for National Primary and Secondary Ambient Air Quality Standards
February 20, 2017	FCE On-Site	State	MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits

Violations

0Violation determinations since January 1, 2017
0Of them high-priority

What high-priority and federally reportable violations mean.

EPA’s violation history file holds no violation for ICIS-AIR LA0000002201900127 since January 1, 2017.

Enforcement and penalties

4 of the formal enforcement actions carry a penalty filed above zero. How a penalty is shown.

Date	What EPA recorded	Agency	Penalty, as filed
January 7, 2026	Administrative Order	State	$55,000
November 26, 2024	Administrative Order	State	$30,000
July 8, 2024	Administrative Order	State	$0
October 26, 2022	Civil Judicial Action	U.S. EPA	$750,000
April 4, 2019	Administrative Order	State	$0
February 24, 2017	Administrative Order	State	$95,000

Informal enforcement

Date	What EPA recorded	Agency
December 11, 2025	Warning Letter	State
July 8, 2024	Notice of Violation	State
October 5, 2023	Warning Letter	State
April 4, 2019	Notice of Violation	State

Stack tests

0Stack tests since January 1, 2017
0Recorded as failed

EPA’s stack test file holds no test at ICIS-AIR LA0000002201900127 since January 1, 2017.

Watch WESTLAKE POLYMERS LLC - POLYETHYLENE MANUFACTURING COMPLEX

Privacy

Free from EPA: Detailed Facility Report, ECHO Notify (registry ID 110000449587).

Other air sources in Louisiana beside WESTLAKE POLYMERS LLC - POLYETHYLENE MANUFACTURING COMPLEX

EPA ICIS-AIR download, loaded September 14, 2026.