2023 Washington Code 78.52.150 – Investigations authorized

2022 Washington Code 78.52.150 – Investigations authorized

2020 Washington Code 78.52.150 – Investigations authorized

2019 Washington Code 78.52.150

2018 Washington Code 78.52.150 – Investigations authorized

2016 Washington Code 78.52.150 – Investigations authorized

2015 Washington Code 78.52.150 – Investigations authorized

2014 Washington Code 78.52.150 – Investigations authorized

2013 Washington Code 78.52.150 – Investigations authorized

2009 Washington Code 78.52.150 – Investigations authorized