2023 Washington Code 80.20.060 – Limitation on frequency of investigation

2022 Washington Code 80.20.060 – Limitation on frequency of investigation

2020 Washington Code 80.20.060 – Limitation on frequency of investigation

2019 Washington Code 80.20.060

2018 Washington Code 80.20.060 – Limitation on frequency of investigation

2016 Washington Code 80.20.060 – Limitation on frequency of investigation

2015 Washington Code 80.20.060 – Limitation on frequency of investigation

2014 Washington Code 80.20.060 – Limitation on frequency of investigation

2013 Washington Code 80.20.060 – Limitation on frequency of investigation

2009 Washington Code 80.20.060 – Limitation on frequency of investigation