2023 Washington Code 88.28.060 – Discharging ballast, when prohibited — Exception — City areas — Penalty

2022 Washington Code 88.28.060 – Discharging ballast, when prohibited–Exception–City areas–Penalty

2020 Washington Code 88.28.060 – Discharging ballast, when prohibited — Exception — City areas — Penalty

2019 Washington Code 88.28.060

2018 Washington Code 88.28.060 – Discharging ballast, when prohibited — Exception — City areas — Penalty

2016 Washington Code 88.28.060 – Discharging ballast, when prohibited–Exception–City areas–Penalty

2015 Washington Code 88.28.060 – Discharging ballast, when prohibited–Exception–City areas–Penalty

2014 Washington Code 88.28.060 – Discharging ballast, when prohibited — Exception — City areas — Penalty

2013 Washington Code 88.28.060 – Discharging ballast, when prohibited — Exception — City areas — Penalty

2009 Washington Code 88.28.060 – Discharging ballast, when prohibited — Exception — City areas — Penalty