FBI, ATF Investigate Suspicious Fires at Line 5 Site and Enbridge Office in Wisconsin
The FBI and ATF are investigating two suspicious fires tied to Enbridge’s Line 5 pipeline reroute in northern Wisconsin, ENR reports, including one at an active drilling site and another at a company office roughly 40 miles apart.
Market Impact
The first fire broke out at 6:28 a.m. on Sept. 17 in the Township of Gingles in Ashland County, where an equipment trailer and two boring machines burned at the Line 5 reroute construction site, according to a sheriff’s office press release. Days earlier, on Sept. 14 at about 1:41 a.m., firefighters responded to flames and smoke at Enbridge’s Great Lakes office in Superior, Wis. Firefighters there also found graffiti painted on signs and the building, though authorities have not disclosed its content. No injuries were reported in either incident, and damage estimates are not yet available.
“The FBI, along with our local, state and federal partners, are investigating the cause of the fires,” said Caroline Clancy, public affairs officer for the FBI Milwaukee Division. ATF spokesperson Ashlee Sherrill said the agency “is working on the origin and cause determination as well as other matters.” Enbridge spokesperson Juli Kellner called the incidents “neither legal nor peaceful” and said the company will pursue prosecution “to the fullest extent of the law.” The fires come amid heightened scrutiny of the $1-billion, 41-mile Wisconsin reroute, which is meant to move Line 5 off tribal land. In August, a parked semi-truck rolled into an excavation site in Saxon, Wis., about 40 miles from the fire site, striking a bypass valve and causing a 1.3-million-gallon natural gas spill. That forced a shutdown before the line reopened Sept. 15.
What It Means for Subcontractors
- Crews and equipment operators on active pipeline reroute sites, including drilling and boring contractors, should expect increased security presence and possible access restrictions following the Sept. 17 equipment fire in Ashland County.
- Subcontractors working on Enbridge or similarly contested infrastructure projects should review site security protocols and incident reporting procedures given the ongoing FBI and ATF investigation into suspected sabotage.
- Firms with equipment staged overnight at remote drilling or construction sites should assess insurance coverage and theft/arson risk, particularly on projects near disputed tribal land where opposition has escalated.
- Companies bidding on the remaining segments of the 41-mile Wisconsin reroute should factor potential security-related delays or added site protection costs into scheduling and cost estimates until the investigation concludes.
