2023 Washington Code 85.06.640 – Additional improvements — Authorized — Change in plans

2022 Washington Code 85.06.640 – Additional improvements–Authorized–Change in plans

2020 Washington Code 85.06.640 – Additional improvements — Authorized — Change in plans

2019 Washington Code 85.06.640

2018 Washington Code 85.06.640 – Additional improvements — Authorized — Change in plans

2016 Washington Code 85.06.640 – Additional improvements–Authorized–Change in plans

2015 Washington Code 85.06.640 – Additional improvements–Authorized–Change in plans

2014 Washington Code 85.06.640 – Additional improvements — Authorized — Change in plans

2013 Washington Code 85.06.640 – Additional improvements — Authorized — Change in plans

2009 Washington Code 85.06.640 – Additional improvements — Authorized — Change in plans