The department shall conduct a study to determine the best management practices for categories of waste for the priority waste management methods established in RCW
70A.300.260, with due consideration in the course of the study to sound environmental management and available technology. As an element of the study, the department shall review methods that will help achieve the priority of RCW
70A.300.260(1)(a), waste reduction. Before issuing any proposed rules, the department shall conduct public hearings regarding the best management practices for the various waste categories studied by the department. After conducting the study, the department shall prepare new rules or modify existing rules as appropriate to promote implementation of the priorities established in RCW
70A.300.260 for management practices which assure use of sound environmental management techniques and available technology. The preliminary study shall be completed by July 1, 1986, and the rules shall be adopted by July 1, 1987.
The studies shall be updated at least once every five years. The funding for these studies shall be from the model toxics control operating account created in RCW
70A.305.180, subject to legislative appropriation.