2023 Washington Code 28A.215.040 – Establishment and maintenance discretionary

2022 Washington Code 28A.215.040 – Establishment and maintenance discretionary

2020 Washington Code 28A.215.040 – Establishment and maintenance discretionary

2019 Washington Code 28A.215.040 – Establishment and maintenance discretionary

2018 Washington Code 28A.215.040 – Establishment and maintenance discretionary

2016 Washington Code 28A.215.040 – Establishment and maintenance discretionary

2015 Washington Code 28A.215.040 – Establishment and maintenance discretionary

2014 Washington Code 28A.215.040 – Establishment and maintenance discretionary

2013 Washington Code 28A.215.040 – Establishment and maintenance discretionary

2009 Washington Code 28A.215.040 – Establishment and maintenance discretionary