Washington Revised Code Title 70A. Environmental Health and Safety § 70A.205.250. Solid waste stream evaluation

(a) The department shall determine which management method for each category of solid waste will have the least environmental impact; and

(b) The department shall evaluate the costs of various management options for each category of solid waste, including a review of market availability, and shall take into consideration the economic impact on affected parties;

(c) Based on the results of (a) and (b) of this subsection, the department shall determine the best management for each category of solid waste. Different management methods for the same categories of waste may be developed for different parts of the state.

(a) By January 1, 1989, yard waste and other biodegradable materials, paper products, disposable diapers, and batteries; and

(b) By January 1, 1990, metals, glass, plastics, styrofoam or rigid lightweight cellular polystyrene, and tires.