2023 Washington Code 50.01.010 – Preamble

2022 Washington Code 50.01.010 – Preamble

2020 Washington Code 50.01.010 – Preamble

2019 Washington Code 50.01.010

2018 Washington Code 50.01.010 – Preamble

2016 Washington Code 50.01.010 – Preamble

2015 Washington Code 50.01.010 – Preamble

2014 Washington Code 50.01.010 – Preamble

2013 Washington Code 50.01.010 – Preamble

2009 Washington Code 50.01.010 – Preamble