# PHMSA Hazmat Incident X-2010100261 — SULFURIC ACID — SANTA FE SPRINGS, CA

**Citation:** PHMSA Hazmat Incident X-2010100261  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2010-09-29  
**Published:** Not stated

Serious reporter-submitted hazardous materials transportation incident on 2010-09-29 in SANTA FE SPRINGS, CA.

## Document text

PHMSA hazardous materials incident report X-2010100261.
Incident date: 2010-09-29.
Location: SANTA FE SPRINGS, CA.
Mode: Rail.
Carrier/reporter: Union Pacific Railroad.
Shipper: Kennecott Utah Copper LLC.
Materials: UN1830; SULFURIC ACID; hazard class 8; 25675 LGA released.
What failed: Gasket.
How failed: Crushed.
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://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=mFQ%2B9TccENIndt33VzYxvg%3D%3D>
- Source ID: `phmsa-hazmat-incidents`
- SHA-256: `dff5abfd9439fef85393476f8941bb87463a7759e1b0979f3614d730ff02e4f6`
- Retrieved: 2026-08-13T12:55:56.545Z
- Exported: 2026-08-25T14:26:46.918Z
- Document slug: `phmsa-hazmat-incident-x-2010100261`

### Source metadata

```json
{
  "materialSubtype": "phmsa_hazmat_serious_incident",
  "reportNumber": "X-2010100261",
  "operatorReported": true,
  "serious": true,
  "finalAgencyFinding": false,
  "eventDescriptionExcluded": true,
  "publicPdfUrl": "https://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=mFQ%2B9TccENIndt33VzYxvg%3D%3D",
  "rowCount": 1,
  "carrierReporterNames": [
    "Union Pacific Railroad"
  ],
  "shipperNames": [
    "Kennecott Utah Copper LLC"
  ],
  "routes": [],
  "cities": [
    "SANTA FE SPRINGS"
  ],
  "states": [
    "CA"
  ],
  "originCities": [
    "MAGNA"
  ],
  "modes": [
    "Rail"
  ],
  "materials": [
    {
      "identificationNumber": "UN1830",
      "commodityName": "SULFURIC ACID",
      "hazardousClass": "8",
      "quantityReleased": "25675",
      "unitOfMeasure": "LGA"
    }
  ],
  "packages": [
    {
      "identificationMarkings": "111A",
      "outerMaterial": "ASTM A516, Gr. 70 - 316L (DOT1",
      "outerType": null,
      "outerCapacity": "25925",
      "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"
}
```