ATMOS PIPELINE - TEXAS — Gas transmission and gathering — incident on 2011-06-10

Gas transmission and gathering incident in WACO, MCLENNAN County, TX. Reported cause: EXCAVATION DAMAGE. Reported consequences: 0 fatalities, 0 injuries, 1059 NATURAL GAS released, $24,383 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: 20110231.

Operator ID: 31978.

Reported incident date: 6/10/2011 10:28.

Location detail: 7+59

Cause detail: PREVIOUS DAMAGE DUE TO EXCAVATION ACTIVITY

Cause detail: MISCELLANEOUS ROOT CAUSES

Cause detail: ROOT CAUSE NOT LISTED (COMMENT REQUIRED)

Cause detail: COMPANY AND CONTRACT PERSONNEL ON SITE PERFORMING ILI PIGGING OPERATIONS. DURING PIGGING OPERATIONS, PIPELINE FAILURE OCCURRED 759 FEET FROM STATION (RIVER JUNCTION) AND END OF PIPELINE L8(3RD) (STATION 0+00). PIPELINE WAS PLACED OUT OF SERVICE FOR INVESTIGATION, AND THE DAMAGED PIPE SENT TO STORK LABS IN HOUSTON, TEXAS TO BE ANALYZED. RESULTS OF THE EXAMINATION INDICATED THAT THE PIPE HAD BEEN LONGITUDINALLY GOUGED BY OUTSIDE FORCES CONSISTENT WITH A BACKHOE OR SIMILAR EQUIPMENT. THERE ARE NO RECORDS OF THE PIPE BEING DAMAGED IN THE AREA. PIPELINE REMAINS OUT OF SERVICE WHILE ONGOING REMEDIATION ACTIVITIES ARE BEING PERFORMED.

PHMSA trend classification: not significant, not serious.

PHMSA standardized cause: EXCAVATION DAMAGE — PREVIOUS DAMAGE DUE TO EXCAVATION.

PHMSA indexed costs: $86,823 reported total cost, $48,290.402 in 1984 dollars, $109,893.41 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.