ENBRIDGE ENERGY, LIMITED PARTNERSHIP — Hazardous liquid — incident on 2007-01-01

Hazardous liquid incident in ATWOOD, CLARK County, WI. Reported cause: 19. Reported consequences: 0 fatalities, 0 injuries, YES ALBIAN HEAVY SYNTHETIC released, $702,500 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: 20070029.

Operator ID: 11169.

Reported incident date: 1/1/2007.

Cause detail: PIPE SEAM WELD

Cause detail: AT APPROXIMATELY 0830 MST, A CALL WAS RECEIVED FROM THE EDMONTON CONTROL CENTER THAT THERE WAS A PRESSURE LOSS AT OWEN STATION. THE PIPELINE WAS IMMEDIATELY SHUT DOWN AND THE VESPER PLM CREW WAS NOTIFIED AND RESPONDED TO OWEN STATION. AT 1115 MST, THE LEAK WAS CONFIRMED BY VESPER PLM AND ADDITIONAL VESPER AND FORT ATKINSON PLM CREWS MOBILIZED MANPOWER AND EMERGENCY RESPONSE EQUIPMENT TO THE LEAK SITE. SUPERIOR AND BEMIDJI PLM CREWS WERE ALSO NOTIFIED AND BEGAN TO MOBILIZE MANPOWER AND EQUIPMENT. AN OPS INSPECTOR ARRIVED ON SITE JANUARY 2, 2007 AND WITNESSED THE REPAIR.

PHMSA trend classification: significant incident, not serious.

PHMSA standardized cause: MATERIAL FAILURE OF PIPE OR WELD — PIPE SEAM.

PHMSA indexed costs: $702,500 reported total cost, $399,834.396 in 1984 dollars, $984,669.062 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.