# EL PASO NATURAL GAS CO — Gas transmission and gathering — incident on 2015-06-10 **Citation:** PHMSA Report 20150089 **Type / status:** incident / historical **Agency:** Pipeline and Hazardous Materials Safety Administration **Effective:** 2015-06-10 **Published:** 2015-06-29 Gas transmission and gathering incident in Not Within a Municipality, GRAY County, TX. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 3648 NATURAL GAS released, $800 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 Not Within a Municipality, GRAY County, TX. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 3648 NATURAL GAS released, $800 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: 20150089. Operator ID: 4280. Reported incident date: 6/10/2015 12:15. Location detail: MILEPOST 68 Cause detail: MALFUNCTION OF CONTROL/RELIEF EQUIPMENT Cause detail: EPNG; LINE 3044; MILEPOST 68; PIPELINE 4X6 RELIEF VALVE PREMATURELY OPERATED; 12:15 (MOUNTAIN) TO 12:38 (MOUNTAIN); NEARBY RESIDENT CONTACTED EPNG STAFF; EPNG TECHNICIANS WERE IN THE AREA AND WERE DISPATCHED TO THE RELIEF VALVE SITE; EPNG TECHNICIANS CLOSED THE BLOCK VALVE BENEATH THE RELIEF VALVE HALTING THE RELEASE OF NATURAL GAS AT 12:38 (MOUNTAIN); SCADA DATA SHOWED 845 PSIG OPERATING PRESSURE WITH PRESSURE DECREASE TO 833 PSIG DURING THE RELEASE EVENT; MAOP IS 867 PSIG; EPNG TECHNICIANS INVESTIGATED RELIEF (BELIEVE DEBRIS OR TRASH MAY HAVE BEEN THE CAUSE OF PREMATURE RELIEF); RELIEF VALVE WAS RESET AND RETURNED TO SERVICE; PIPELINE SEGMENT WAS MANNED AND PRESSURE MANUALLY MONITORED WHILE RELIEF VALVE WAS NOT IN SERVICE; RELIEF VALVE RETURNED TO SERVICE 18:00 (MOUNTAIN); PHMSA trend classification: not significant, not serious. PHMSA standardized cause: EQUIPMENT FAILURE — MALFUNCTION OF CONTROL/RELIEF EQUIPMENT. PHMSA indexed costs: $15,545 reported total cost, $14,009.506 in 1984 dollars, $17,790.052 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: - Source ID: `phmsa-pipeline-incidents` - SHA-256: `6b93cb6590515adfda1f63ca9d89b4c5f6da042d0703d6b71ec369485c442a8b` - Retrieved: 2026-08-20T03:30:32.010Z - Exported: 2026-08-27T12:55:00.288Z - Document slug: `phmsa-incident-683c1b887830ca39270513f7` ### Source metadata ```json { "recordKind": "pipeline_incident", "datasetType": "gas_transmission_gathering", "datasetLabel": "Gas transmission and gathering", "datasetPeriod": "January 2010 to present", "report": { "number": "20150089", "supplementalNumber": "16816", "type": "SUPPLEMENTAL FINAL", "receivedDate": "2015-06-29", "receivedDateRaw": "6/29/2015" }, "operator": { "id": "4280", "name": "EL PASO NATURAL GAS CO" }, "incident": { "date": "2015-06-10", "dateRaw": "6/10/2015 12:15" }, "location": { "city": "Not Within a Municipality", "county": "GRAY", "state": "TX", "postalCode": "79065", "latitude": 35.4602482, "longitude": -100.9793471, "type": "PIPELINE RIGHT-OF-WAY", "details": { "DESIGNATED_NAME": "MILEPOST 68" }, "facilityName": "LINE 3044" }, "cause": { "category": "EQUIPMENT FAILURE", "details": { "CAUSE_DETAILS": "MALFUNCTION OF CONTROL/RELIEF EQUIPMENT", "NARRATIVE": "EPNG; LINE 3044; MILEPOST 68; PIPELINE 4X6 RELIEF VALVE PREMATURELY OPERATED; 12:15 (MOUNTAIN) TO 12:38 (MOUNTAIN); NEARBY RESIDENT CONTACTED EPNG STAFF; EPNG TECHNICIANS WERE IN THE AREA AND WERE DISPATCHED TO THE RELIEF VALVE SITE; EPNG TECHNICIANS CLOSED THE BLOCK VALVE BENEATH THE RELIEF VALVE HALTING THE RELEASE OF NATURAL GAS AT 12:38 (MOUNTAIN); SCADA DATA SHOWED 845 PSIG OPERATING PRESSURE WITH PRESSURE DECREASE TO 833 PSIG DURING THE RELEASE EVENT; MAOP IS 867 PSIG; EPNG TECHNICIANS INVESTIGATED RELIEF (BELIEVE DEBRIS OR TRASH MAY HAVE BEEN THE CAUSE OF PREMATURE RELIEF); RELIEF VALVE WAS RESET AND RETURNED TO SERVICE; PIPELINE SEGMENT WAS MANNED AND PRESSURE MANUALLY MONITORED WHILE RELIEF VALVE WAS NOT IN SERVICE; RELIEF VALVE RETURNED TO SERVICE 18:00 (MOUNTAIN);" } }, "consequences": { "fatalities": 0, "injuries": 0, "commodity": "NATURAL GAS", "release": "3648", "propertyDamage": 800, "estimatedOperatorCost": 0, "estimatedEmergencyCost": 150, "estimatedEnvironmentalCost": null, "ignition": "NO", "explosion": "NO", "evacuated": 0, "raw": { "FATAL": "0", "INJURE": "0", "UNINTENTIONAL_RELEASE": "3648", "EST_COST_PROP_DAMAGE": "800", "PRPTY": "15545" } }, "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": 1305, "rowSha256": "9a14de70a12dc413b71733c5f7c833e53d00281af63736f6b34427437ca29ff4" }, "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": "MATERIAL/WELD/EQUIP FAILURE", "sevenSubcategory": "MALFUNCTION OF CONTROL/RELIEF EQUIPMENT", "eightCategory": "EQUIPMENT FAILURE", "eightSubcategory": "MALFUNCTION OF CONTROL/RELIEF EQUIPMENT" }, "costs": { "reported": 15545, "in1984Dollars": 14009.506019352615, "currentYearDollars": 17790.051685002865 }, "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": 687, "rowSha256": "fce80c0837190e7874f4ff413919c0265d647a3711cd730b3b79d18e7150bf21" } }, "jurisdiction": "US", "operatorName": "EL PASO NATURAL GAS CO" } ```