“Beginning Monday [January 1], residential burning will no longer be allowed in Washington’s smaller communities. It’s the latest stage of Washington’s Clean Air Act of 1991.
The new requirements make it illegal to burn yard clippings, leaf piles and other yard waste in cities with populations of fewer than 5,000 residents, including their urban growth boundaries. Burning was banned in larger cities in 2001.
Burning for land clearing is also now banned, except in communities with fewer than 1,000 peo,” quoting KING-5 TV.