Versions of See prior versions of a law on LawServer 2023 Washington Code 82.04.660 – Exemptions — Environmental handling charges — Mercury-containing lights 2022 Washington Code 82.04.660 – Exemptions–Environmental handling charges–Mercury-containing lights 2020 Washington Code 82.04.660 – Exemptions — Environmental handling charges — Mercury-containing lights 2019 Washington Code 82.04.660 2018 Washington Code 82.04.660 – Exemptions — Environmental handling charges — Mercury-containing lights