[EPAPulse](/v/epapulse) / compare

# SOUTHWEST SHIPYARD, LP vs AFTON CHEMICAL CORPORATION: EPAPulse comparison

**SOUTHWEST SHIPYARD, LP's penalties of 66,550 is 1.0x AFTON CHEMICAL CORPORATION's 66,000 (62nd percentile). SOUTHWEST SHIPYARD, LP is dated 2024-12-05; AFTON CHEMICAL CORPORATION 2026-02-21.**

Data as of 2026-11-04 · [Compiled by Zalwin](/research/epapulse) from U.S. EPA ECHO (Enforcement and Compliance History Online) Copy citation

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## How does SOUTHWEST SHIPYARD, LP compare to AFTON CHEMICAL CORPORATION?

| Field | SOUTHWEST SHIPYARD, LP | AFTON CHEMICAL CORPORATION |
|---|---|---|
| Facility | SOUTHWEST SHIPYARD, LP | AFTON CHEMICAL CORPORATION |
| EPA Registry ID | 110000463533 | 110067263071 |
| Address | 18310 MARKET STREET, CHANNELVIEW, TX, 77530 | 1000 N SOUTH ST, PASADENA, TX, 77503 |
| County | HARRIS COUNTY | HARRIS |
| Industry (NAICS) | 336611: Ship Building and Repairing | 325199: All Other Basic Organic Chemical Manufacturing , 325998: All Other Miscellaneous Chemical Product and Preparation Manufacturing |
| SIC | 3731: Ship Building And Repairing, 3732: Boat Building And Repairing, 4491: Marine Cargo Handling, 4952: Sewerage Systems, 4953: Refuse Systems | 2869: Industrial Organic Chemicals, 4226: Special Warehousing And Storage |
| Overall compliance status | Significant Violation | No Violation Identified |
| Significant noncomplier | Yes | No |
| Quarters in noncompliance (last 12) | 12 | 10 |
| Clean Water Act | Compliance/Permit Schedule - Violations | No Violation Identified |
| Clean Air Act | No Violation Identified | No Violation Identified |
| RCRA | Violation | No Violation Identified |
| Formal enforcement actions (5 years) | 6 | 1 |
| Total penalties | $66,550 | $66,000 |
| Last penalty | 10/15/2025 | 02/18/2025 |
| Inspections (5 years) | 6 | 4 |
| Last inspection | 2024-12-05 | 2026-02-21 |
| Watershed | Buffalo-San Jacinto | Buffalo-San Jacinto |
| amount percentile | 62nd | 61st |
| Remediation Urgency Score | 93/100 | 58/100 |
| Peer rank and all 300 TX records (CSV) | Every comparable record ranked, with amounts, dates and scores 🔒 Click to unlock → |
| Official source URLs for every peer record | Direct links to each record at its government source 🔒 Click to unlock → |

Official records: [SOUTHWEST SHIPYARD, LP](https://echo.epa.gov/detailed-facility-report?fid=110000463533) · [AFTON CHEMICAL CORPORATION](https://echo.epa.gov/detailed-facility-report?fid=110067263071)

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