Washington Revised Code Title 76. Forests and Forest Products § 76.04.215. Burning mill wood waste--Arresters

(1) It is unlawful for anyone manufacturing lumber or shingles, or other forest products, to destroy wood waste material by burning within one-fourth of one mile of any forest material without properly confining the place of the burning and without further safeguarding the surrounding property against danger from the burning by such additional devices as the department may require.

(2) It is unlawful for anyone to destroy any wood waste material by fire within any burner or destructor operated within one-fourth of one mile of any forest material, or to operate any power-producing plant using in connection therewith any smokestack, chimney, or other spark-emitting outlet, without installing and maintaining on such burner, or destructor, or on such smokestack, chimney, or other spark-emitting outlet, a safe and suitable device for arresting sparks.