The site of an August natural gas leak in Northern Wisconsin is the spot of ongoing environmental remediation effort, according to a report by Wisconsin Public Radio.
The report said about 4,275 tons of contaminated soil has been removed by crews as cleanup work continues on the Enbridge Line 5 pipeline project.
The Canadian company said 31,000 barrels of natural gas liquids were released into the atmosphere when the line was hit by an unoccupied flatbed truck on Aug. 25.
The truck, which rolled into an open construction trench, was owned by a subcontractor on the pipeline project.
Enbridge is building a new 41-mile segment of Line 5 in Ashland and Iron counties.
The contaminated soil was disposed of at Waste Management’s Timberline Trail Landfill in Weyerhaeuser, Wisconsin.
Soil samples contained volatile organic compounds and polycyclic aromatic hydrocarbons from petroleum products at the site and levels of benzene above the state’s residual contaminant levels.
