Versions of 40 CFR 121.16 - When the Administrator certifies on LawServer 2024 40 CFR 121.16 – When the Administrator certifies 2023 40 CFR 121.16 – Review and advice 2022 40 CFR 121.16 – Review and advice 2021 40 CFR 121.16 – Review and advice 2020 40 CFR 121.16 – Waiver 2019 40 CFR 121.16 – Waiver 2016 40 CFR 121.16 – Waiver 2015 40 CFR 121.16 – Waiver 2014 40 CFR 121.16 – Waiver 2010 40 CFR 121.16 – Waiver 2009 40 CFR 121.16 – Waiver
