# PHMSA Hazmat Incident E-2023100475 — SODIUM HYDROXIDE, SOLUTION — BROWNSVILLE, TX

**Citation:** PHMSA Hazmat Incident E-2023100475  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2023-09-20  
**Published:** Not stated

Serious reporter-submitted hazardous materials transportation incident on 2023-09-20 in BROWNSVILLE, TX.

## Document text

PHMSA hazardous materials incident report E-2023100475.
Incident date: 2023-09-20.
Location: BROWNSVILLE, TX.
Mode: Highway.
Carrier/reporter: QUALITY CARRIERS, INC..
Shipper: FORMOSA PLASTICS CORPORATION, TEXAS.
Materials: UN1824; SODIUM HYDROXIDE, SOLUTION; hazard class 8; 2 LGA released.
What failed: Loading or Unloading Lines.
How failed: Leaked.
Reported failure causes: Human Error.
Reported result: Spillage.
Reporter-submitted DOT Form 5800.1 data may be incomplete, corrected, supplemented, or misreported. A record, serious-incident classification, failure description, or relationship to a reporting rule is not a PHMSA causal finding, compliance determination, or finding of a violation.

## Provenance

- Official: Yes
- Source: <https://portalpublic.phmsa.dot.gov/analytics/saw.dll?Portal?PortalPath=/shared/Public%20Website%20Pages/_portal/Hazmat%20Incident%20Report%20Search>
- Source ID: `phmsa-hazmat-incidents`
- SHA-256: `387c56f18a2f5cdffcea40bd7be8a1763ca9cb96b5b7bf9341b60a5fdadcf9a2`
- Retrieved: 2026-08-13T12:55:56.545Z
- Exported: 2026-08-25T14:38:40.724Z
- Document slug: `phmsa-hazmat-incident-e-2023100475`

### Source metadata

```json
{
  "materialSubtype": "phmsa_hazmat_serious_incident",
  "reportNumber": "E-2023100475",
  "operatorReported": true,
  "serious": true,
  "finalAgencyFinding": false,
  "eventDescriptionExcluded": true,
  "publicPdfUrl": null,
  "rowCount": 1,
  "carrierReporterNames": [
    "QUALITY CARRIERS, INC."
  ],
  "shipperNames": [
    "FORMOSA PLASTICS CORPORATION, TEXAS"
  ],
  "routes": [
    "1425 Robin Hood Drive"
  ],
  "cities": [
    "BROWNSVILLE"
  ],
  "states": [
    "TX"
  ],
  "originCities": [],
  "modes": [
    "Highway"
  ],
  "materials": [
    {
      "identificationNumber": "UN1824",
      "commodityName": "SODIUM HYDROXIDE, SOLUTION",
      "hazardousClass": "8",
      "quantityReleased": "2",
      "unitOfMeasure": "LGA"
    }
  ],
  "packages": [
    {
      "identificationMarkings": "407",
      "outerMaterial": "SS-316L",
      "outerType": null,
      "outerCapacity": "7000",
      "outerCapacityUnit": "LGA",
      "outerShipmentCount": "1",
      "outerFailedCount": "0",
      "innerMaterial": null,
      "innerType": null,
      "innerCapacity": "0",
      "innerCapacityUnit": null,
      "innerShipmentCount": "0",
      "innerFailedCount": "0"
    }
  ],
  "reportingRuleContext": [
    "171.15",
    "171.16"
  ],
  "caveat": "Reporter-submitted DOT Form 5800.1 data may be incomplete, corrected, supplemented, or misreported. A record, serious-incident classification, failure description, or relationship to a reporting rule is not a PHMSA causal finding, compliance determination, or finding of a violation.",
  "privacyCaveat": "The public CSV excludes preparer contact fields. Event Description is intentionally excluded from normalized records and search output to reduce incidental personal-information risk.",
  "jurisdiction": "US"
}
```