Versions of See prior versions of a law on LawServer 2023 Washington Code 70A.400.010 – Discharge or use for training purposes of certain class B firefighting foam prohibited 2022 Washington Code 70A.400.010 – Discharge or use for training purposes of certain class B firefighting foam prohibited 2020 Washington Code 70A.400.010 – Discharge or use for training purposes of certain class B firefighting foam prohibited