2024 40 CFR 147.3012 – Construction requirements for Class I wells

2023 40 CFR 147.3012 – Construction requirements for Class I wells

2022 40 CFR 147.3012 – Construction requirements for Class I wells

2021 40 CFR 147.3012 – Construction requirements for Class I wells

2020 40 CFR 147.3012 – Construction requirements for Class I wells

2019 40 CFR 147.3012 – Construction requirements for Class I wells

2016 40 CFR 147.3012 – Construction requirements for Class I wells

2015 40 CFR 147.3012 – Construction requirements for Class I wells

2014 40 CFR 147.3012 – Construction requirements for Class I wells

2010 40 CFR 147.3012 – Construction requirements for Class I wells

2009 40 CFR 147.3012 – Construction requirements for Class I wells