# HIGHMARK ENERGY OPERATING LLC - COTTON VALLEY GAS PLANT, COTTON VALLEY LA: EPA ECHO compliance status: Significant Violation

**Remediation Urgency Score:** 71/100

| Field | Value |
|---|---|
| Facility | HIGHMARK ENERGY OPERATING LLC - COTTON VALLEY GAS PLANT |
| EPA Registry ID | 110000538473 |
| Address | 1256 MARATHON RD, COTTON VALLEY, LA, 71018 |
| County | WEBSTER |
| Industry (NAICS) | 211112: Natural Gas Liquid Extraction , 211130: Natural Gas Extraction |
| SIC | 1321: Natural Gas Liquids |
| Overall compliance status | Significant Violation |
| Significant noncomplier | Yes |
| Quarters in noncompliance (last 12) | 5 |
| Clean Water Act | Failure to Report DMR - Not Received |
| Clean Air Act | No Violation Identified |
| RCRA | No Violation Identified |
| Formal enforcement actions (5 years) | 6 |
| Total penalties | $58,814 |
| Last penalty | 01/22/2026 |
| Inspections (5 years) | 2 |
| Last inspection | 2025-12-10 |
| Watershed | Loggy Bayou |

## Why this score
- Flagged as a significant noncomplier, the highest EPA priority tier.
- 5 of the last 12 quarters in noncompliance.
- Current violation under CWA.
- 6 formal enforcement action(s) in 5 years.
- $58,814 in penalties.
- Inspected within the last year (2025-12-10).

Source: U.S. EPA ECHO (Enforcement and Compliance History Online) (https://echo.epa.gov/detailed-facility-report?fid=110000538473). 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.