City of Duluth operations staff will purge natural gas from a segment of pipe located by the intersection of Garfield Avenue and Interstate 35 on Tuesday.

Residents who notice a sulfur smell should note this is an expected result of releasing methane into the air, according to a news release from the city.

Officials state that purging natural gas from pipelines is standard practice before a large construction project takes place. This practice allows for welding on the pipes to occur after the gas has been released into the atmosphere.

Crews will be onsite during the purge and will monitor the situation. The removal will begin in the morning and expected to take four hours to release the gas.