Versions of CFR > Title 40 > Chapter I > Subchapter D > Part 146 > Subpart B - Criteria and Standards Applicable to Class I Wells on LawServer 2024 CFR > Title 40 > Chapter I > Subchapter D > Part 146 > Subpart B – Criteria and Standards Applicable to Class I Wells 2023 CFR > Title 40 > CHAPTER I > SUBCHAPTER D > PART 146 > Subpart B – Criteria and Standards Applicable to Class I Wells 2022 CFR > Title 40 > Chapter I > Subchapter D > Part 146 > Subpart B – Criteria and Standards Applicable to Class I Wells 2021 CFR > Title 40 > Chapter I > Subchapter D > Part 146 > Subpart B – Criteria and Standards Applicable to Class I Wells 2020 CFR > Title 40 > Chapter I > Subchapter D > Part 146 > Subpart B – Criteria and Standards Applicable to Class I Wells 2019 CFR > Title 40 > Chapter I > Subchapter D > Part 146 > Subpart B – Criteria and Standards Applicable to Class I Wells 2016 CFR > Title 40 > Chapter I > Subchapter D > Part 146 > Subpart B – Criteria and Standards Applicable to Class I Wells 2015 CFR > Title 40 > Chapter I > Subchapter D > Part 146 > Subpart B – Criteria and Standards Applicable to Class I Wells 2014 CFR > Title 40 > Chapter I > Subchapter D > Part 146 > Subpart B – Criteria and Standards Applicable to Class I Wells