# PHMSA Hazmat Incident E-2011030177 — AMMONIA ANHYDROUS — SPENCER, IA

**Citation:** PHMSA Hazmat Incident E-2011030177  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2011-02-28  
**Published:** Not stated

Serious reporter-submitted hazardous materials transportation incident on 2011-02-28 in SPENCER, IA.

## Document text

PHMSA hazardous materials incident report E-2011030177.
Incident date: 2011-02-28.
Location: SPENCER, IA.
Mode: Highway.
Carrier/reporter: CHS Inc..
Shipper: CHS Transportation.
Materials: UN1005; AMMONIA ANHYDROUS; hazard class 2.2; 200.52 GCF released.
Reported failure causes: Rollover Accident.
Reported result: Vapor(Gas) Dispersion.
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=rGbixYdcvN9SfJhKBb5J%2FA%3D%3D>
- Source ID: `phmsa-hazmat-incidents`
- SHA-256: `3399b9d94c918abe98f81b7129c95bb45cc385b10fd5adafdb5dc6c940a9a297`
- Retrieved: 2026-08-13T12:55:56.545Z
- Exported: 2026-08-26T06:10:03.076Z
- Document slug: `phmsa-hazmat-incident-e-2011030177`

### Source metadata

```json
{
  "materialSubtype": "phmsa_hazmat_serious_incident",
  "reportNumber": "E-2011030177",
  "operatorReported": true,
  "serious": true,
  "finalAgencyFinding": false,
  "eventDescriptionExcluded": true,
  "publicPdfUrl": "https://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=rGbixYdcvN9SfJhKBb5J%2FA%3D%3D",
  "rowCount": 1,
  "carrierReporterNames": [
    "CHS Inc."
  ],
  "shipperNames": [
    "CHS Transportation"
  ],
  "routes": [
    "290th and 300th"
  ],
  "cities": [
    "SPENCER"
  ],
  "states": [
    "IA"
  ],
  "originCities": [],
  "modes": [
    "Highway"
  ],
  "materials": [
    {
      "identificationNumber": "UN1005",
      "commodityName": "AMMONIA ANHYDROUS",
      "hazardousClass": "2.2",
      "quantityReleased": "200.52",
      "unitOfMeasure": "GCF"
    }
  ],
  "packages": [
    {
      "identificationMarkings": "UN1005",
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "0",
      "outerCapacityUnit": null,
      "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"
}
```