2023 Washington Code 74.42.020 – Minimum standards

2022 Washington Code 74.42.020 – Minimum standards

2020 Washington Code 74.42.020 – Minimum standards

2019 Washington Code 74.42.020

2018 Washington Code 74.42.020 – Minimum standards

2016 Washington Code 74.42.020 – Minimum standards

2015 Washington Code 74.42.020 – Minimum standards

2014 Washington Code 74.42.020 – Minimum standards

2013 Washington Code 74.42.020 – Minimum standards

2009 Washington Code 74.42.020 – Minimum standards