# PHMSA Hazmat Incident I-2001050304 — O-DICHLOROBENZENE — MERIDIAN, MS

**Citation:** PHMSA Hazmat Incident I-2001050304  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 1999-08-10  
**Published:** Not stated

Serious reporter-submitted hazardous materials transportation incident on 1999-08-10 in MERIDIAN, MS.

## Document text

PHMSA hazardous materials incident report I-2001050304.
Incident date: 1999-08-10.
Location: MERIDIAN, MS.
Mode: Highway.
Carrier/reporter: HELWIG JAMES & SON.
Shipper: ZEP MFG CO.
Materials: UN1591; O-DICHLOROBENZENE; hazard class 6.1; 20 LGA released | UN1786; HYDROFLUORIC ACID AND SULFURIC ACID MIXTURES; hazard class 8; 440 LGA released | UN1993; FLAMMABLE LIQUIDS, N.O.S.; hazard class 3; 20 LGA released | UN1993; FLAMMABLE LIQUIDS, N.O.S.; hazard class 3; 52 LGA released | UN3264; CORROSIVE LIQUID, ACIDIC, INORGANIC, N.O.S.; hazard class 8; 110 LGA released | UN3264; CORROSIVE LIQUID, ACIDIC, INORGANIC, N.O.S.; hazard class 8; 550 LGA released.
Reported failure causes: Fire, Temperature, or Heat.
Reported result: Fire.
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=upyPl9o8iTKAbqrum1bMAw%3D%3D>
- Source ID: `phmsa-hazmat-incidents`
- SHA-256: `be96f21da8f8b380fd95cff1daf53f59aae97153e1a5c99da937eb9baa3d6a1c`
- Retrieved: 2026-08-13T12:55:56.545Z
- Exported: 2026-08-26T17:37:36.261Z
- Document slug: `phmsa-hazmat-incident-i-2001050304`

### Source metadata

```json
{
  "materialSubtype": "phmsa_hazmat_serious_incident",
  "reportNumber": "I-2001050304",
  "operatorReported": true,
  "serious": true,
  "finalAgencyFinding": false,
  "eventDescriptionExcluded": true,
  "publicPdfUrl": "https://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=upyPl9o8iTKAbqrum1bMAw%3D%3D",
  "rowCount": 6,
  "carrierReporterNames": [
    "HELWIG JAMES & SON"
  ],
  "shipperNames": [
    "ZEP MFG CO"
  ],
  "routes": [
    "I-20 EXIT 127 & 128"
  ],
  "cities": [
    "MERIDIAN"
  ],
  "states": [
    "MS"
  ],
  "originCities": [],
  "modes": [
    "Highway"
  ],
  "materials": [
    {
      "identificationNumber": "UN1591",
      "commodityName": "O-DICHLOROBENZENE",
      "hazardousClass": "6.1",
      "quantityReleased": "20",
      "unitOfMeasure": "LGA"
    },
    {
      "identificationNumber": "UN1786",
      "commodityName": "HYDROFLUORIC ACID AND SULFURIC ACID MIXTURES",
      "hazardousClass": "8",
      "quantityReleased": "440",
      "unitOfMeasure": "LGA"
    },
    {
      "identificationNumber": "UN1993",
      "commodityName": "FLAMMABLE LIQUIDS, N.O.S.",
      "hazardousClass": "3",
      "quantityReleased": "20",
      "unitOfMeasure": "LGA"
    },
    {
      "identificationNumber": "UN1993",
      "commodityName": "FLAMMABLE LIQUIDS, N.O.S.",
      "hazardousClass": "3",
      "quantityReleased": "52",
      "unitOfMeasure": "LGA"
    },
    {
      "identificationNumber": "UN3264",
      "commodityName": "CORROSIVE LIQUID, ACIDIC, INORGANIC, N.O.S.",
      "hazardousClass": "8",
      "quantityReleased": "110",
      "unitOfMeasure": "LGA"
    },
    {
      "identificationNumber": "UN3264",
      "commodityName": "CORROSIVE LIQUID, ACIDIC, INORGANIC, N.O.S.",
      "hazardousClass": "8",
      "quantityReleased": "550",
      "unitOfMeasure": "LGA"
    }
  ],
  "packages": [
    {
      "identificationMarkings": null,
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "20",
      "outerCapacityUnit": "LGA",
      "outerShipmentCount": "1",
      "outerFailedCount": "1",
      "innerMaterial": null,
      "innerType": null,
      "innerCapacity": "0",
      "innerCapacityUnit": null,
      "innerShipmentCount": "0",
      "innerFailedCount": "0"
    },
    {
      "identificationMarkings": null,
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "275",
      "outerCapacityUnit": "LGA",
      "outerShipmentCount": "2",
      "outerFailedCount": "2",
      "innerMaterial": null,
      "innerType": null,
      "innerCapacity": "0",
      "innerCapacityUnit": null,
      "innerShipmentCount": "0",
      "innerFailedCount": "0"
    },
    {
      "identificationMarkings": null,
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "4",
      "outerCapacityUnit": "LGA",
      "outerShipmentCount": "13",
      "outerFailedCount": "13",
      "innerMaterial": null,
      "innerType": null,
      "innerCapacity": "1",
      "innerCapacityUnit": "LGA",
      "innerShipmentCount": "52",
      "innerFailedCount": "52"
    },
    {
      "identificationMarkings": null,
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "5",
      "outerCapacityUnit": "LGA",
      "outerShipmentCount": "4",
      "outerFailedCount": "4",
      "innerMaterial": null,
      "innerType": null,
      "innerCapacity": "0",
      "innerCapacityUnit": null,
      "innerShipmentCount": "0",
      "innerFailedCount": "0"
    },
    {
      "identificationMarkings": null,
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "55",
      "outerCapacityUnit": "LGA",
      "outerShipmentCount": "2",
      "outerFailedCount": "2",
      "innerMaterial": null,
      "innerType": null,
      "innerCapacity": "0",
      "innerCapacityUnit": null,
      "innerShipmentCount": "0",
      "innerFailedCount": "0"
    },
    {
      "identificationMarkings": null,
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "55",
      "outerCapacityUnit": "LGA",
      "outerShipmentCount": "8",
      "outerFailedCount": "8",
      "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"
}
```