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