Updated

The City of Montreal says it will begin dumping eight billion liters (2.1 billion gallons) of untreated sewage into the St. Lawrence River on Wednesday.

Mayor Denis Coderre said Tuesday the dump will begin Wednesday morning at 12:01 a.m.

On Monday, Canada's new environment minister said she would permit the dump as long as the city met certain conditions.

Coderre said the city will meet all of those requirements, including increased monitoring of the river and a clean-up plan for areas affected.

Coderre has said the dump is necessary because the city must temporarily close a large sewer that feeds sewage to a treatment facility.

U.S. Sen. Charles Schumer had asked U.S. environmental regulators to ask Canada to stop the discharge. The EPA said it has no regulatory authority.