# PACIFIC GAS & ELECTRIC CO — Gas transmission and gathering — incident on 2018-08-13 **Citation:** PHMSA Report 20180093 **Type / status:** incident / historical **Agency:** Pipeline and Hazardous Materials Safety Administration **Effective:** 2018-08-13 **Published:** 2018-09-12 Gas transmission and gathering incident in SEBASTAPOL, SONOMA County, CA. Reported cause: MATERIAL FAILURE OF PIPE OR WELD. Reported consequences: 0 fatalities, 0 injuries, 50 NATURAL GAS released, $135,558 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 SEBASTAPOL, SONOMA County, CA. Reported cause: MATERIAL FAILURE OF PIPE OR WELD. Reported consequences: 0 fatalities, 0 injuries, 50 NATURAL GAS released, $135,558 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: 20180093. Operator ID: 15007. Reported incident date: 8/13/2018 18:43. Location detail: 9.7 Cause detail: DESIGN-, CONSTRUCTION-, INSTALLATION-, OR FABRICATION-RELATED Cause detail: ON MONDAY, AUGUST 13, 2018, AT 1843 HOURS, PG&E WAS NOTIFIED OF A GRADE ONE TRANSMISSION LEAK AT 1311 GRAVENSTEIN HWY N IN SEBASTOPOL, CA. PG&E'S CONTRACTOR WAS ON SITE WHILE HAND DIGGING AND EXPOSING THE LEAK APPROXIMATELY AT 1843 HOURS. PG&E CREWS ARRIVED ON-SITE AND REMAINED ON SCENE OVERNIGHT UNTIL THE REPAIRS WERE COMPLETED. ON AUGUST 14, 2018, THE LEAKING SERVICE TEE WAS CUTOUT ALONG WITH THE SECTION OF 6" PIPE IT WAS WELDED TO. THE LEAK WAS LOCATED ALONG LINE DFM 1302-02 AT MILE POINT 9.7. THERE WAS NO CUSTOMER IMPACT. THERE WERE NO OF INJURIES OR NO FATALITIES. THERE WAS NO MEDIA, POLICE, FIRE DEPARTMENT REPORTED. THIS INCIDENT WAS REPORTED TO THE DOT AND CPUC DUE TO THE >$50,000 CRITERIA. PHMSA trend classification: significant incident, not serious. PHMSA standardized cause: MATERIAL FAILURE OF PIPE OR WELD — CONSTRUCTION, INSTALLATION OR FABRICATION-RELATED. PHMSA indexed costs: $173,255 reported total cost, $82,831.811 in 1984 dollars, $203,812.832 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: `277a5914bbd79296926502e2a1baeecead6f6b1b03ce8cf4f09fabff3480072a` - Retrieved: 2026-08-20T03:30:32.010Z - Exported: 2026-08-24T16:35:55.998Z - Document slug: `phmsa-incident-df9ebfac81dcb5e92295e8e9` ### Source metadata ```json { "recordKind": "pipeline_incident", "datasetType": "gas_transmission_gathering", "datasetLabel": "Gas transmission and gathering", "datasetPeriod": "January 2010 to present", "report": { "number": "20180093", "supplementalNumber": "32861", "type": "SUPPLEMENTAL FINAL", "receivedDate": "2018-09-12", "receivedDateRaw": "9/12/2018" }, "operator": { "id": "15007", "name": "PACIFIC GAS & ELECTRIC CO" }, "incident": { "date": "2018-08-13", "dateRaw": "8/13/2018 18:43" }, "location": { "city": "SEBASTAPOL", "county": "SONOMA", "state": "CA", "postalCode": "95472", "latitude": 38.41454011, "longitude": -122.8446028, "type": "PIPELINE RIGHT-OF-WAY", "details": { "DESIGNATED_NAME": "9.7" }, "facilityName": "DFM 1302-02" }, "cause": { "category": "MATERIAL FAILURE OF PIPE OR WELD", "details": { "CAUSE_DETAILS": "DESIGN-, CONSTRUCTION-, INSTALLATION-, OR FABRICATION-RELATED", "NARRATIVE": "ON MONDAY, AUGUST 13, 2018, AT 1843 HOURS, PG&E WAS NOTIFIED OF A GRADE ONE TRANSMISSION LEAK AT 1311 GRAVENSTEIN HWY N IN SEBASTOPOL, CA. PG&E'S CONTRACTOR WAS ON SITE WHILE HAND DIGGING AND EXPOSING THE LEAK APPROXIMATELY AT 1843 HOURS. PG&E CREWS ARRIVED ON-SITE AND REMAINED ON SCENE OVERNIGHT UNTIL THE REPAIRS WERE COMPLETED. ON AUGUST 14, 2018, THE LEAKING SERVICE TEE WAS CUTOUT ALONG WITH THE SECTION OF 6\" PIPE IT WAS WELDED TO. THE LEAK WAS LOCATED ALONG LINE DFM 1302-02 AT MILE POINT 9.7. THERE WAS NO CUSTOMER IMPACT. THERE WERE NO OF INJURIES OR NO FATALITIES. THERE WAS NO MEDIA, POLICE, FIRE DEPARTMENT REPORTED. THIS INCIDENT WAS REPORTED TO THE DOT AND CPUC DUE TO THE >$50,000 CRITERIA." } }, "consequences": { "fatalities": 0, "injuries": 0, "commodity": "NATURAL GAS", "release": "50", "propertyDamage": 135558, "estimatedOperatorCost": 0, "estimatedEmergencyCost": 37544, "estimatedEnvironmentalCost": null, "ignition": "NO", "explosion": "NO", "evacuated": 0, "raw": { "FATAL": "0", "INJURE": "0", "UNINTENTIONAL_RELEASE": "50", "EST_COST_PROP_DAMAGE": "135558", "PRPTY": "173255" } }, "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": 945, "rowSha256": "f7862dcd8d2769163468e248a30012bf4da0e7d311b4ed24d2b932e410bde993" }, "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": "MATERIAL/WELD/EQUIP FAILURE", "sevenSubcategory": "CONSTRUCTION, INSTALLATION OR FABRICATION-RELATED", "eightCategory": "MATERIAL FAILURE OF PIPE OR WELD", "eightSubcategory": "CONSTRUCTION, INSTALLATION OR FABRICATION-RELATED" }, "costs": { "reported": 173255, "in1984Dollars": 82831.81066801494, "currentYearDollars": 203812.83184426746 }, "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": 1054, "rowSha256": "92e35a4ac04d2416642f3da730fe723ede2f4c6594e8881c73329806b747a602" } }, "jurisdiction": "US", "operatorName": "PACIFIC GAS & ELECTRIC CO" } ```