Versions of Washington Code 78.56.050 - Environmental impact statement required -- Mitigation measures to be part of permit requirements -- Department of ecology to cooperate with affected local governments on LawServer 2023 Washington Code 78.56.050 – Environmental impact statement required — Mitigation measures to be part of permit requirements — Department of ecology to cooperate with affected local governments 2022 Washington Code 78.56.050 – Environmental impact statement required–Mitigation measures to be part of permit requirements–Department of ecology to cooperate with affected local governments 2020 Washington Code 78.56.050 – Environmental impact statement required — Mitigation measures to be part of permit requirements — Department of ecology to cooperate with affected local governments 2019 Washington Code 78.56.050 2018 Washington Code 78.56.050 – Environmental impact statement required — Mitigation measures to be part of permit requirements — Department of ecology to cooperate with affected local governments 2016 Washington Code 78.56.050 – Environmental impact statement required–Mitigation measures to be part of permit requirements–Department of ecology to cooperate with affected local governments 2015 Washington Code 78.56.050 – Environmental impact statement required–Mitigation measures to be part of permit requirements–Department of ecology to cooperate with affected local governments 2014 Washington Code 78.56.050 – Environmental impact statement required — Mitigation measures to be part of permit requirements — Department of ecology to cooperate with affected local governments 2013 Washington Code 78.56.050 – Environmental impact statement required — Mitigation measures to be part of permit requirements — Department of ecology to cooperate with affected local governments 2009 Washington Code 78.56.050 – Environmental impact statement required — Mitigation measures to be part of permit requirements — Department of ecology to cooperate with affected local governments