Wall confirmed that Don McMorris was driving a government car at the time.
Don McMorris said he has "no words to describe" how sorry he is to his family, colleagues and the people of Saskatchewan.
Water sampling is ongoing.
Experts say he could challenge the decision.
A Husky Energy Inc. pipeline leaked an estimated 200,000 to 250,000 litres of crude.
"This truly is a historic day," said the Yukon premier.
Codie McLachlan, Michael Bell/CP
A deal could go through without including the always-contentious issue of alcohol.
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Alberta's markup on beer in increasing in August.
Starting Aug. 5, Alberta will charge a $1.25-per-litre markup for all beer.
While, to the energy world, "100% Clean and Renewable Wind, Water, and Sunlight (WWS) All-Sector Energy Roadmaps for 139 Countries of the World" is simply a thought experiment; it also serves as the Leap Manifesto's energy plan.
But a large minority worries the economy can't take it.
He also stated his opposition to the carbon tax.
"It's not like potato chips at all."
The Saskatchewan premier was re-elected with a majority government in April.