# CORNERSTONE CHEMICAL CO LLC, WAGGAMAN LA: EPA ECHO compliance status: Significant Violation

**Remediation Urgency Score:** 96/100

| Field | Value |
|---|---|
| Facility | CORNERSTONE CHEMICAL CO LLC |
| EPA Registry ID | 110049249075 |
| Address | 10800 RIVER RD, WAGGAMAN, LA, 70094 |
| County | JEFFERSON |
| Industry (NAICS) | 325199: All Other Basic Organic Chemical Manufacturing , 326199: All Other Plastics Product Manufacturing |
| SIC | 2816: Inorganic Pigments, 2819: Industrial Inorganic Chemicals, 2821: Plastics Materials And Resins, 2869: Industrial Organic Chemicals |
| Overall compliance status | Significant Violation |
| Significant noncomplier | Yes |
| Quarters in noncompliance (last 12) | 11 |
| Clean Water Act | Violation Identified |
| Clean Air Act | No Violation Identified |
| RCRA | Significant Noncomplier |
| Formal enforcement actions (5 years) | 7 |
| Total penalties | $122,114 |
| Last penalty | 10/24/2025 |
| Inspections (5 years) | 9 |
| Last inspection | 2025-07-03 |
| Watershed | East Central Louisiana Coastal |

## Why this score
- Flagged as a significant noncomplier, the highest EPA priority tier.
- 11 of the last 12 quarters in noncompliance.
- Violations under 2 statutes (CWA, RCRA): a multi-media problem.
- 7 formal enforcement action(s) in 5 years.
- $122,114 in penalties: remediation has a clear cost of inaction.

Source: U.S. EPA ECHO (Enforcement and Compliance History Online) (https://echo.epa.gov/detailed-facility-report?fid=110049249075). Last refreshed: 2026-11-03T18:05:36.266Z.
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.