2023 Washington Code 43.21A.235 – Exemption from laboratory certification and fee requirements

2022 Washington Code 43.21A.235 – Exemption from laboratory certification and fee requirements

2020 Washington Code 43.21A.235 – Exemption from laboratory certification and fee requirements

2019 Washington Code 43.21A.235 – Exemption from laboratory certification and fee requirements

2018 Washington Code 43.21A.235 – Exemption from laboratory certification and fee requirements

2016 Washington Code 43.21A.235 – Exemption from laboratory certification and fee requirements

2015 Washington Code 43.21A.235 – Exemption from laboratory certification and fee requirements

2014 Washington Code 43.21A.235 – Exemption from laboratory certification and fee requirements

2013 Washington Code 43.21A.235 – Exemption from laboratory certification and fee requirements

2009 Washington Code 43.21A.235 – Exemption from laboratory certification and fee requirements