Washington Revised Code Title 70A. Environmental Health and Safety § 70A.15.5080. Limited outdoor burning--Permits issued by political subdivisions--Types of fires permitted

(1) Fires consisting of leaves, clippings, prunings and other yard and gardening refuse originating on lands immediately adjacent and in close proximity to a human dwelling and burned on such lands by the property owner or his or her designee.

(2) Fires consisting of residue of a natural character such as trees, stumps, shrubbery or other natural vegetation arising from land clearing projects or agricultural pursuits for pest or disease control; except that the fires described in this subsection may be prohibited in those areas having a general population density of one thousand or more persons per square mile.