A Breath of Fresh Air

Calgary solves decades-old odor mystery with new monitoring and analysis technology

A Breath of Fresh Air

City of Calgary Manager Kevin Colbran (left) and Operations Supervisor Mike Johnston (Photos by Jeremy Klager)

Calgary is the largest city in the western Canadian province of Alberta, about 230 miles north of the U.S. border with Montana. Fish Creek Wastewater Treatment Plant is the smallest of three wastewater treatment plants in the metro area of about 1.4 million people.

For 40 years,...

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