Wash. Rev. Code § 70A.510.010
Photovoltaic module stewardship and takeback program—Definitions—Requirements—Enforcement—Penalty—Fees—Rule making
(1) The legislature finds that a convenient, safe, and environmentally sound system for the recycling of photovoltaic modules, minimization of hazardous waste, and recovery of commercially valuable materials must be established. The legislature further finds that the responsibility for this system must be shared among…