2023 Washington Code 72.19.020 – Rules

2022 Washington Code 72.19.020 – Rules

2020 Washington Code 72.19.020 – Rules

2019 Washington Code 72.19.020

2018 Washington Code 72.19.020 – Rules and regulations

2016 Washington Code 72.19.020 – Rules and regulations

2015 Washington Code 72.19.020 – Rules and regulations

2014 Washington Code 72.19.020 – Rules and regulations

2013 Washington Code 72.19.020 – Rules and regulations

2009 Washington Code 72.19.020 – Rules and regulations