WBI ENERGY TRANSMISSION, INC. — Gas transmission and gathering — incident on 2013-01-26

Gas transmission and gathering incident in ALEXANDER, MCKENZIE COUNTY County, ND. Reported cause: EXCAVATION DAMAGE. Reported consequences: 0 fatalities, 0 injuries, 751 NATURAL GAS released, $15,350 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: 20130016.

Operator ID: 22655.

Reported incident date: 1/26/2013 9:50.

Location detail: 792+89

Cause detail: EXCAVATION DAMAGE BY THIRD PARTY

Cause detail: EXCAVATION ISSUE

Cause detail: EXCAVATOR FAILED TO MAINTAIN CLEARANCE AFTER VERIFYING MARKS

Cause detail: A DOZER THAT WAS RIPPING FROZEN GROUND PUNCTURED A 4" NATURAL GAS LINE. THE LINE RELEASED NATURAL GAS UNTIL IT WAS SHUT IN AND ISOLATED. THE LINE WAS PROPERLY MARKED BY THE OPERATOR, BUT THE CONTRACTOR FAILED TO MAINTAIN DISTANCE FROM THE PIPELINE WHILE EXCAVATING. THE UNINTENTIONAL RELEASE OF GAS TOTALED 751 MCF WHICH DOES NOT MEET THE REPORTING THRESHOLD OF 3 MILLION CUBIC FEET OF GAS, BUT WBI ENERGY DEEMED IT SIGNIFICANT TO REPORT THE INCIDENT. NATURAL GAS SERVICE WAS LOST TO THE TOWNS OF ARNEGARD, ND AND WATFORD CITY, ND. SUPPLEMENTAL REPORT 3/7/13 REVISED DATA IN QUESTION C.3.A. FROM 4.5 TO 4, REVISED DATA G3.6 FROM NO TO YES, AND MARKED ONE-CALL SYSTEM IN G3.6.A.

PHMSA trend classification: significant incident, not serious.

PHMSA standardized cause: EXCAVATION DAMAGE — THIRD PARTY EXCAVATION DAMAGE.

PHMSA indexed costs: $194,993 reported total cost, $101,848.534 in 1984 dollars, $247,430.238 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.