There is still no estimate for a restart of the impacted segment of the Polaris system and no update was expected on Tuesday, Inter Pipeline said. The east segment of the pipeline, which supplies some other oil-sands sites, is fully operational.

Husky, operator of the Sunrise oil-sands site, has been affected by the pipeline shutdown, “however, we have other options to help mitigate the effects,” spokeswoman Dawn Delaney said.

Imperial said it’s assessing the impact of the pipeline shutdown on its Kearl heavy-crude mine. Co-generation power readings from Kearl were zero on Tuesday, according to Alberta Electric System Operator ​data.

Inter Pipeline is working to dig up the line, Shawn Roth, a Alberta Energy Regulator spokesman, said. New booms have been deployed and wildlife containment measures taken. The site is difficult to access but a helicopter and vehicles have reached the location, he said.