Occidental Chemical Oxychem- Portland Plant
4133 Tx-361, Gregory, TX 78359, San Patricio County
A manufacturing facility in Gregory, Texas, listed in EPA records under all other basic organic chemical manufacturing (NAICS 325199) and also petrochemical manufacturing and other basic inorganic chemical manufacturing. It is one of 6,127 active manufacturing facilities in EPA records in Texas.
- Industry
- Chemicals
- NAICS 325
- TRI reporter
- Yes
- Inspections, 5 yr
- 9
- EPA registry ID
- 110070725501
- Revised
- November 1, 2026
What's made here
- All Other Basic Organic Chemical Manufacturing (NAICS 325199)
- Petrochemical Manufacturing (NAICS 325110)
- Other Basic Inorganic Chemical Manufacturing (NAICS 325180)
- Steel Wire Drawing (NAICS 331222)
Public EPA records
| Toxics Release Inventory | Reports to the TRI (facility ID 78359CCDNTHWY36). |
|---|---|
| Clean Air Act | Listed as a major source of air emissions. |
| Clean Water Act | A major water discharge permit (NPDES). |
| Hazardous waste (RCRA) | Listed as a large quantity generator of hazardous waste (1,000 kg or more a month); and an operating hazardous waste treatment, storage or disposal facility. |
| Greenhouse gas reporting | Reports to the Greenhouse Gas Reporting Program. |
| Inspections | 9 in the last five years; most recent August 17, 2026. |
EPA ECHO, November 1, 2026; not a rating. EPA report ยท About these records