# GULF SOUTH PIPELINE COMPANY, LP — Gas transmission and gathering — incident on 2015-03-15 **Citation:** PHMSA Report 20150045 **Type / status:** incident / historical **Agency:** Pipeline and Hazardous Materials Safety Administration **Effective:** 2015-03-15 **Published:** 2015-04-02 Gas transmission and gathering incident in DEQUINCY, CALCASIEU County, LA. Reported cause: CORROSION FAILURE. Reported consequences: 0 fatalities, 0 injuries, 10 NATURAL GAS released, $197,208 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: significant incident, not serious. ## Document text Gas transmission and gathering incident in DEQUINCY, CALCASIEU County, LA. Reported cause: CORROSION FAILURE. Reported consequences: 0 fatalities, 0 injuries, 10 NATURAL GAS released, $197,208 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: 20150045. Operator ID: 31728. Reported incident date: 3/15/2015 16:10. Location detail: 40.3 Cause detail: EXTERNAL CORROSION Cause detail: LEAK DISCOVERED ON PIPELINE THAT IS 7 FEET UNDER WATER IN A CREEK WITH A MUD LINE AT 11 FEET. PRESSURE WAS LOWERED FROM 375 PSIG TO 300 PSIG. INITIAL INDICATIONS ARE THAT THIS IS A FITTING LEAK. WHEN WATER RECEDES, REMEDIATION WILL OCCUR. UNTIL THAT TIME, THIS SECTION OF LINE REMAINS ISOLATED AND PRESSURE LOWERED. 2-12-16 LEAK IS LOCATED IN A DEEP CREEK IN A NARROW RIGHT OF WAY. FOR THIS REASON, REPAIR IS SCHEDULED FOR JULY/AUGUST 2016 TIME FRAME WHEN WATER LEVELS WILL BE LOWER AND PERMITTING CAN BE OBTAINED. 3-30-17 GULF SOUTH EXPECTS TO REPAIR IN LATE APRIL 2017. 5-18-17 GULF SOUTH CUT AND CAPPED THE LINE. THE FINAL REPORT IS BEING SUBMITTED NOW (9-26-17) BECAUSE OF THE AMOUNT OF TIME REQUIRED TO BE ABLE TO CORRECTLY DOCUMENT THE REPAIR COSTS. 10-16-17 REVISED APPARENT CAUSE TO EXTERNAL CORROSION BASED ON ADDITIONAL INFORMATION RECEIVED AND ANSWERED ADDITIONAL QUESTIONS THAT RESULTED FROM THAT CHANGE. PHMSA trend classification: significant incident, not serious. PHMSA standardized cause: CORROSION — EXTERNAL. PHMSA indexed costs: $198,533 reported total cost, $99,991.066 in 1984 dollars, $245,188.111 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: `f8982679ecfa2f63c1a8fc50d54f503b5eef7342304cf090c877ab8e71319af2` - Retrieved: 2026-08-20T03:30:32.010Z - Exported: 2026-08-25T10:20:10.186Z - Document slug: `phmsa-incident-5bd41aad19995a44b72a87f0` ### Source metadata ```json { "recordKind": "pipeline_incident", "datasetType": "gas_transmission_gathering", "datasetLabel": "Gas transmission and gathering", "datasetPeriod": "January 2010 to present", "report": { "number": "20150045", "supplementalNumber": "17470", "type": "SUPPLEMENTAL FINAL", "receivedDate": "2015-04-02", "receivedDateRaw": "4/2/2015" }, "operator": { "id": "31728", "name": "GULF SOUTH PIPELINE COMPANY, LP" }, "incident": { "date": "2015-03-15", "dateRaw": "3/15/2015 16:10" }, "location": { "city": "DEQUINCY", "county": "CALCASIEU", "state": "LA", "postalCode": "70633", "latitude": 30.3964, "longitude": -93.2926, "type": "PIPELINE RIGHT-OF-WAY", "details": { "DESIGNATED_NAME": "40.3" }, "facilityName": "CALL JUNCTION TO IOWA COMPRESSOR STATION" }, "cause": { "category": "CORROSION FAILURE", "details": { "CAUSE_DETAILS": "EXTERNAL CORROSION", "NARRATIVE": "LEAK DISCOVERED ON PIPELINE THAT IS 7 FEET UNDER WATER IN A CREEK WITH A MUD LINE AT 11 FEET. PRESSURE WAS LOWERED FROM 375 PSIG TO 300 PSIG. INITIAL INDICATIONS ARE THAT THIS IS A FITTING LEAK. WHEN WATER RECEDES, REMEDIATION WILL OCCUR. UNTIL THAT TIME, THIS SECTION OF LINE REMAINS ISOLATED AND PRESSURE LOWERED. 2-12-16 LEAK IS LOCATED IN A DEEP CREEK IN A NARROW RIGHT OF WAY. FOR THIS REASON, REPAIR IS SCHEDULED FOR JULY/AUGUST 2016 TIME FRAME WHEN WATER LEVELS WILL BE LOWER AND PERMITTING CAN BE OBTAINED. 3-30-17 GULF SOUTH EXPECTS TO REPAIR IN LATE APRIL 2017. 5-18-17 GULF SOUTH CUT AND CAPPED THE LINE. THE FINAL REPORT IS BEING SUBMITTED NOW (9-26-17) BECAUSE OF THE AMOUNT OF TIME REQUIRED TO BE ABLE TO CORRECTLY DOCUMENT THE REPAIR COSTS. 10-16-17 REVISED APPARENT CAUSE TO EXTERNAL CORROSION BASED ON ADDITIONAL INFORMATION RECEIVED AND ANSWERED ADDITIONAL QUESTIONS THAT RESULTED FROM THAT CHANGE." } }, "consequences": { "fatalities": 0, "injuries": 0, "commodity": "NATURAL GAS", "release": "10", "propertyDamage": 197208, "estimatedOperatorCost": 0, "estimatedEmergencyCost": 400, "estimatedEnvironmentalCost": null, "ignition": "NO", "explosion": "NO", "evacuated": 0, "raw": { "FATAL": "0", "INJURE": "0", "UNINTENTIONAL_RELEASE": "10", "EST_COST_PROP_DAMAGE": "197208", "PRPTY": "198533" } }, "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": 1348, "rowSha256": "bda0fab34319bd7fcd32987f70db4173238b2fb21bbe7407a9c45dd740b60ee4" }, "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": true, "serious": false }, "standardizedCause": { "sevenCategory": "CORROSION", "sevenSubcategory": "EXTERNAL", "eightCategory": "CORROSION", "eightSubcategory": "EXTERNAL" }, "costs": { "reported": 198533, "in1984Dollars": 99991.06582943066, "currentYearDollars": 245188.11061438 }, "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": 644, "rowSha256": "3f703e57d60c3c9b73573b1823d9b07809d57d48dd7099437a14a50563b2ae91" } }, "jurisdiction": "US", "operatorName": "GULF SOUTH PIPELINE COMPANY, LP" } ```