SPOKANE, Wash. -- Clean air officials in Spokane County are celebrating "one of the region's biggest success stories," a milestone they've been trying to reach for decades.

The Spokane Regional Clean Air Agency (SRCAA) announced the end of a 20-year, federally mandated, maintenance period demonstrating continued compliance with clean air standards for carbon monoxide and particulate matter (PM10).

“Spokane County’s air quality meets clean air standards nearly every day of the year, with a handful of exceptions that mainly occur during wildfire season, said SRCAA Executive Director April Westby in a press release. “This is a remarkable turnaround from the 1970s, ’80s, and ’90s, when the area routinely failed health-based clean air standards established by the U.S. Environmental Protection

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