2023 Washington Code 90.48.490 – Sewage treatment facilities — Plans to upgrade or construct

2022 Washington Code 90.48.490 – Sewage treatment facilities–Plans to upgrade or construct

2020 Washington Code 90.48.490 – Sewage treatment facilities — Plans to upgrade or construct

2019 Washington Code 90.48.490

2018 Washington Code 90.48.490 – Sewage treatment facilities — Plans to upgrade or construct

2016 Washington Code 90.48.490 – Sewage treatment facilities–Plans to upgrade or construct

2015 Washington Code 90.48.490 – Sewage treatment facilities–Plans to upgrade or construct

2014 Washington Code 90.48.490 – Sewage treatment facilities — Plans to upgrade or construct

2013 Washington Code 90.48.490 – Sewage treatment facilities — Plans to upgrade or construct

2009 Washington Code 90.48.490 – Sewage treatment facilities — Plans to upgrade or construct