Clean Air Act stationary source · ICIS-AIR WASWC0005301500148
WESTLAKE US 2 LLC, Longview, WA: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Major sourceEmissions classification
- No Violation IdentifiedCurrent violation status, as filed
- 9Compliance evaluations since January 1, 2017
- 0High-priority violations since January 1, 2017
- 1Formal enforcement actions since January 1, 2017
WESTLAKE US 2 LLC, at 3451 INDUSTRIAL WAY, Longview in Cowlitz County, Washington, 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”. 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 | WESTLAKE US 2 LLC |
|---|---|
| ICIS-AIR ID | WASWC0005301500148 |
| EPA facility registry ID | 110022931666 |
| Operating status | Operating |
| Emissions classification | Major source |
| Current violation status (ICIS-AIR high-priority violation field) | No Violation Identified |
| Address | 3451 INDUSTRIAL WAY, Longview, WA 98632 |
| County | Cowlitz County |
| In a nonattainment county | No (EPA Green Book) |
| Industry (NAICS) | Chemical manufacturing (NAICS 3251) |
| SIC code | 2812 |
| EPA region | 10 |
| Local air agency | Southwest Clean Air Authority |
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 WESTLAKE US 2 LLC 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
- 9Evaluations since January 1, 2017
- 3Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| May 13, 2024 | PCE Off-Site | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| April 7, 2023 | FCE On-Site | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| April 7, 2023 | PCE Off-Site | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 6, 2022 | PCE Off-Site | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| March 11, 2021 | PCE Off-Site | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| March 9, 2021 | FCE On-Site | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| June 5, 2020 | PCE Off-Site | Local | Title V Permits |
| May 7, 2019 | FCE On-Site | Local | Title V Permits |
| December 31, 2018 | PCE Off-Site | Local | Federally-Enforceable State Operating Permit - Non Title V |
Violations
- 9Violation determinations since January 1, 2017
- 0Of 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 |
|---|---|---|---|
| January 21, 2025 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| January 26, 2023 | Earliest FRV determination | Local | Federally-Enforceable State Operating Permit - Non Title V; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| July 14, 2022 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| September 23, 2021 | Earliest FRV determination | Local | Federally-Enforceable State Operating Permit - Non Title V; Title V Permits |
| March 18, 2021 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| March 18, 2021 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| March 18, 2021 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 26, 2020 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| February 3, 2020 | Earliest FRV determination | Local | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
Enforcement and penalties
1 formal enforcement actions since January 1, 2017, 0 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 |
|---|---|---|---|
| March 11, 2025 | Administrative Order | Local | $0 |
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| January 21, 2025 | Notice of Violation | Local |
Stack tests
- 18Stack tests since January 1, 2017
- 1Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| October 25, 2022 | Pass | Local |
| October 24, 2022 | Pass | Local |
| July 27, 2021 | Pass | Local |
| May 25, 2021 | Pass | Local |
| March 9, 2021 | Pass | Local |
| November 13, 2020 | Fail | Local |
| November 11, 2020 | Pass | Local |
| October 8, 2019 | Pass | Local |
| October 8, 2019 | Pass | Local |
| November 6, 2018 | Pass | Local |
| November 6, 2018 | Pass | Local |
| October 23, 2018 | Pass | Local |
| October 23, 2018 | Pass | Local |
| October 23, 2018 | Pass | Local |
| November 17, 2017 | Pass | Local |
| November 8, 2017 | Pass | Local |
| November 8, 2017 | Pass | Local |
| July 3, 2017 | Pass | Local |
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 110022931666 there.
Nearby on the register
- Air-emissions sources in Cowlitz County
- Every source record in Cowlitz County, A to Z
- Air-emissions sources in Washington
- Every source record in Washington, A to Z
Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.