2023 Washington Code 17.21.128 – Renewal of certificate or license — Recertification standards

2022 Washington Code 17.21.128 – Renewal of certificate or license–Recertification standards

2020 Washington Code 17.21.128 – Renewal of certificate or license — Recertification standards

2019 Washington Code 17.21.128 – Renewal of certificate or license — Recertification standards

2018 Washington Code 17.21.128 – Renewal of certificate or license — Recertification standards

2016 Washington Code 17.21.128 – Renewal of certificate or license–Recertification standards

2015 Washington Code 17.21.128 – Renewal of certificate or license–Recertification standards

2014 Washington Code 17.21.128 – Renewal of certificate or license — Recertification standards

2013 Washington Code 17.21.128 – Renewal of certificate or license — Recertification standards

2009 Washington Code 17.21.128 – Renewal of certificate or license — Recertification standards