2023 Washington Code 18.88A.040 – Registration and certification

2022 Washington Code 18.88A.040 – Registration and certification

2020 Washington Code 18.88A.040 – Registration and certification

2019 Washington Code 18.88A.040 – Registration and certification

2018 Washington Code 18.88A.040 – Registration and certification

2016 Washington Code 18.88A.040 – Registration and certification

2015 Washington Code 18.88A.040 – Registration and certification

2014 Washington Code 18.88A.040 – Registration and certification

2013 Washington Code 18.88A.040 – Registration and certification

2009 Washington Code 18.88A.040 – Registration and certification