# ONEOK GAS TRANSPORTATION, LLC — Gas transmission and gathering — incident on 2019-02-22

**Citation:** PHMSA Report 20190045  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2019-02-22  
**Published:** 2019-04-12

Gas transmission and gathering incident in WELLSTON, LINCOLN County, OK. Reported cause: EXCAVATION DAMAGE. Reported consequences: 0 fatalities, 0 injuries, 491 NATURAL GAS released, $50,000 reported property damage. Operator-reported incident data submitted to PHMSA, generally within 30 days. Records may be supplemented or corrected and do not represent final agency causal findings. PHMSA trend classification: not significant, not serious.

## Document text

Gas transmission and gathering incident in WELLSTON, LINCOLN County, OK. Reported cause: EXCAVATION DAMAGE. Reported consequences: 0 fatalities, 0 injuries, 491 NATURAL GAS released, $50,000 reported property damage. Operator-reported incident data submitted to PHMSA, generally within 30 days. Records may be supplemented or corrected and do not represent final agency causal findings.

Report number: 20190045.

Operator ID: 31286.

Reported incident date: 2/22/2019 15:00.

Location detail: A-26

Cause detail: EXCAVATION DAMAGE BY OPERATOR'S CONTRACTOR (SECOND PARTY)

Cause detail: EXCAVATION ISSUE

Cause detail: EXCAVATOR FAILED TO PROTECT/SHORE/SUPPORT FACILITIES

Cause detail: EXCAVATOR WORKING FOR OPERATOR FAILED TO PROTECT THE PIPE FROM EXCAVATION DAMAGE. DIRT SLOUGHED OFF BANK STRIKING A 1-INCH DRIP LINE AND BROKE A 1-INCH NIPPLE JUST ABOVE THE VALVE.

PHMSA trend classification: not significant, not serious.

PHMSA standardized cause: EXCAVATION DAMAGE — OPERATOR/CONTRACTOR EXCAVATION DAMAGE.

PHMSA indexed costs: $61,188 reported total cost, $29,344.811 in 1984 dollars, $70,746.337 in current-year dollars.

PHMSA trend flags, standardized causes, and indexed costs are analytical fields added to operator-reported incident data. They do not represent final agency causal findings.

## Provenance

- Official: Yes
- Source: <https://data.transportation.gov/api/views/27nc-rsge/files/2b05c2d8-d14a-4c56-ac1c-7d23a4bc31c8?download=true&filename=Gas%20Transmission%20%26%20Gathering%20Incident%20Data%20-%20January%202010%20to%20present.zip>
- Source ID: `phmsa-pipeline-incidents`
- SHA-256: `9774939d489e6b242bef760d5dde32eeed1cad76e4660a130e064434bf9d6c98`
- Retrieved: 2026-08-20T03:30:32.010Z
- Exported: 2026-08-26T04:55:15.155Z
- Document slug: `phmsa-incident-778a9750ead76dfa65a9c665`

### Source metadata

```json
{
  "recordKind": "pipeline_incident",
  "datasetType": "gas_transmission_gathering",
  "datasetLabel": "Gas transmission and gathering",
  "datasetPeriod": "January 2010 to present",
  "report": {
    "number": "20190045",
    "supplementalNumber": "34165",
    "type": "SUPPLEMENTAL FINAL",
    "receivedDate": "2019-04-12",
    "receivedDateRaw": "4/12/2019"
  },
  "operator": {
    "id": "31286",
    "name": "ONEOK GAS TRANSPORTATION, LLC"
  },
  "incident": {
    "date": "2019-02-22",
    "dateRaw": "2/22/2019 15:00"
  },
  "location": {
    "city": "WELLSTON",
    "county": "LINCOLN",
    "state": "OK",
    "postalCode": "74881",
    "latitude": 35.68277,
    "longitude": -97.11632,
    "type": "PIPELINE RIGHT-OF-WAY",
    "details": {
      "DESIGNATED_NAME": "A-26"
    },
    "facilityName": "A-26"
  },
  "cause": {
    "category": "EXCAVATION DAMAGE",
    "details": {
      "CAUSE_DETAILS": "EXCAVATION DAMAGE BY OPERATOR'S CONTRACTOR (SECOND PARTY)",
      "ROOT_CAUSE_CATEGORY": "EXCAVATION ISSUE",
      "ROOT_CAUSE_TYPE": "EXCAVATOR FAILED TO PROTECT/SHORE/SUPPORT FACILITIES",
      "NARRATIVE": "EXCAVATOR WORKING FOR OPERATOR FAILED TO PROTECT THE PIPE FROM EXCAVATION DAMAGE. DIRT SLOUGHED OFF BANK STRIKING A 1-INCH DRIP LINE AND BROKE A 1-INCH NIPPLE JUST ABOVE THE VALVE."
    }
  },
  "consequences": {
    "fatalities": 0,
    "injuries": 0,
    "commodity": "NATURAL GAS",
    "release": "491",
    "propertyDamage": 50000,
    "estimatedOperatorCost": 0,
    "estimatedEmergencyCost": 5000,
    "estimatedEnvironmentalCost": null,
    "ignition": "NO",
    "explosion": null,
    "evacuated": 0,
    "raw": {
      "FATAL": "0",
      "INJURE": "0",
      "UNINTENTIONAL_RELEASE": "491",
      "EST_COST_PROP_DAMAGE": "50000",
      "PRPTY": "61188"
    }
  },
  "provenance": {
    "viewId": "27nc-rsge",
    "viewUrl": "https://data.transportation.gov/api/views/27nc-rsge",
    "assetId": "2b05c2d8-d14a-4c56-ac1c-7d23a4bc31c8",
    "archiveFilename": "Gas Transmission & Gathering Incident Data - January 2010 to present.zip",
    "archiveSha256": "fe0b136ca4b00ac987a8bc2e195098accf910d97512c5fc3b59e62d9da5f674e",
    "memberPath": "incident_gas_transmission_gathering_jan2010_present.txt",
    "memberSha256": "b435f2a25718cf54c54e00294e6788c4f9c6860e02fb86355e75d294c243c4dd",
    "rowNumber": 869,
    "rowSha256": "c89103105c6735790795701cf3116d76789ba87cbfa6db0e6dc48b6a42490d26"
  },
  "caveat": "Operator-reported incident data submitted to PHMSA, generally within 30 days. Records may be supplemented or corrected and do not represent final agency causal findings.",
  "operatorReported": true,
  "finalAgencyFinding": false,
  "flaggedAnalysis": {
    "dataAsOf": "2026-07-31",
    "flags": {
      "fireFirst": null,
      "significant": false,
      "serious": false
    },
    "standardizedCause": {
      "sevenCategory": "EXCAVATION DAMAGE",
      "sevenSubcategory": "OPERATOR/CONTRACTOR EXCAVATION DAMAGE",
      "eightCategory": "EXCAVATION DAMAGE",
      "eightSubcategory": "OPERATOR/CONTRACTOR EXCAVATION DAMAGE"
    },
    "costs": {
      "reported": 61188,
      "in1984Dollars": 29344.810735727708,
      "currentYearDollars": 70746.33737436144
    },
    "caveat": "PHMSA trend flags, standardized causes, and indexed costs are analytical fields added to operator-reported incident data. They do not represent final agency causal findings.",
    "provenance": {
      "sourceUrl": "https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/data_statistics/pipeline/PHMSA_Pipeline_Safety_Flagged_Incidents.zip",
      "landingPageUrl": "https://www.phmsa.dot.gov/data-and-statistics/pipeline/pipeline-incident-flagged-files",
      "catalogUrl": "https://data.transportation.gov/Pipelines-and-Hazmat/Pipeline-Incident-Flagged-Files/qdme-9bbm",
      "retrievalMode": "official_live",
      "archivedAt": null,
      "archiveSha256": "317e6a3e16d60b9b677efe391dc40258b5dd7ead83fb8bea74cb553cedfbbdec",
      "workbook": "gtggungs2010toPresent.xlsx",
      "sheet": "gtggungs2010toPresent",
      "rowNumber": 1137,
      "rowSha256": "1d97adcf597967f286b5b8e669e40f8a110bfb0ead70e71dbf019cc9869aabcc"
    }
  },
  "jurisdiction": "US",
  "operatorName": "ONEOK GAS TRANSPORTATION, LLC"
}
```