# PHMSA Hazmat Incident I-1992020261 — SODIUM HYDROXIDE, SOLUTION — DENVER, CO

**Citation:** PHMSA Hazmat Incident I-1992020261  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 1992-02-04  
**Published:** Not stated

Serious reporter-submitted hazardous materials transportation incident on 1992-02-04 in DENVER, CO.

## Document text

PHMSA hazardous materials incident report I-1992020261.
Incident date: 1992-02-04.
Location: DENVER, CO.
Mode: Highway.
Carrier/reporter: VULCAN CHEMICAL DIV VULCAN MFG.
Shipper: VULCAN CHEMICAL DIV VULCAN MFG.
Materials: UN1824; SODIUM HYDROXIDE, SOLUTION; hazard class 8; 317.5 LGA released.
Reported failure causes: Improper Preparation for Transportation.
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://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=PuM2cbIzzXYbeqMR2nIo0w%3D%3D>
- Source ID: `phmsa-hazmat-incidents`
- SHA-256: `91b5d89593d5e38fd00e8157bedabce43445c4512701f2078e2d07243ce1180c`
- Retrieved: 2026-08-13T12:55:56.545Z
- Exported: 2026-08-24T18:27:36.835Z
- Document slug: `phmsa-hazmat-incident-i-1992020261`

### Source metadata

```json
{
  "materialSubtype": "phmsa_hazmat_serious_incident",
  "reportNumber": "I-1992020261",
  "operatorReported": true,
  "serious": true,
  "finalAgencyFinding": false,
  "eventDescriptionExcluded": true,
  "publicPdfUrl": "https://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=PuM2cbIzzXYbeqMR2nIo0w%3D%3D",
  "rowCount": 1,
  "carrierReporterNames": [
    "VULCAN CHEMICAL DIV VULCAN MFG"
  ],
  "shipperNames": [
    "VULCAN CHEMICAL DIV VULCAN MFG"
  ],
  "routes": [
    "2655 EAST 52ND AVE"
  ],
  "cities": [
    "DENVER"
  ],
  "states": [
    "CO"
  ],
  "originCities": [
    "DENVER"
  ],
  "modes": [
    "Highway"
  ],
  "materials": [
    {
      "identificationNumber": "UN1824",
      "commodityName": "SODIUM HYDROXIDE, SOLUTION",
      "hazardousClass": "8",
      "quantityReleased": "317.5",
      "unitOfMeasure": "LGA"
    }
  ],
  "packages": [
    {
      "identificationMarkings": null,
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "8000",
      "outerCapacityUnit": "LGA",
      "outerShipmentCount": "1",
      "outerFailedCount": "1",
      "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"
}
```