# WESTLAKE CHEMICALS & VINYLS LLC - PLAQUEMINE FACILITY, PLAQUEMINE LA: EPA ECHO compliance status: Significant Violation

**Remediation Urgency Score:** 88/100

| Field | Value |
|---|---|
| Facility | WESTLAKE CHEMICALS & VINYLS LLC - PLAQUEMINE FACILITY |
| EPA Registry ID | 110000613747 |
| Address | 26100 HWY 405 S, PLAQUEMINE, LA, 70764 |
| County | IBERVILLE |
| Industry (NAICS) | 325110: Petrochemical Manufacturing |
| SIC | 2812: Alkalies And Chlorine, 2819: Industrial Inorganic Chemicals, 2821: Plastics Materials And Resins, 2865: Cyclic Crudes And Intermediates, 2869: Industrial Organic Chemicals, 2873: Nitrogenous Fertilizers |
| Overall compliance status | Significant Violation |
| Significant noncomplier | Yes |
| Quarters in noncompliance (last 12) | 12 |
| Clean Water Act | Violation Identified |
| Clean Air Act | No Violation Identified |
| RCRA | Significant Noncomplier |
| Formal enforcement actions (5 years) | 5 |
| Total penalties | $0 |
| Last penalty | 04/27/2021 |
| Inspections (5 years) | 5 |
| Last inspection | 2025-08-07 |
| Watershed | Lower Grand |

## Why this score
- Flagged as a significant noncomplier, the highest EPA priority tier.
- 12 of the last 12 quarters in noncompliance.
- Violations under 2 statutes (CWA, RCRA): a multi-media problem.
- 5 formal enforcement action(s) in 5 years.

Source: U.S. EPA ECHO (Enforcement and Compliance History Online) (https://echo.epa.gov/detailed-facility-report?fid=110000613747). Last refreshed: 2026-11-04T18:09:33.420Z.
Compliance data comes from EPA ECHO and may lag state records; a violation flag is not a finding of wrongdoing. Informational only; not legal or engineering advice.