2024 40 CFR 49.5512 – Federal Implementation Plan Provisions for Four Corners Power Plant, Navajo Nation

2023 40 CFR 49.5512 – Federal Implementation Plan Provisions for Four Corners Power Plant, Navajo Nation

2022 40 CFR 49.5512 – Federal Implementation Plan Provisions for Four Corners Power Plant, Navajo Nation

2021 40 CFR 49.5512 – Federal Implementation Plan Provisions for Four Corners Power Plant, Navajo Nation

2020 40 CFR 49.5512 – Federal Implementation Plan Provisions for Four Corners Power Plant, Navajo Nation

2019 40 CFR 49.5512 – Federal Implementation Plan Provisions for Four Corners Power Plant, Navajo Nation

2016 40 CFR 49.5512 – Federal Implementation Plan Provisions for Four Corners Power Plant, Navajo Nation

2015 40 CFR 49.5512 – Federal Implementation Plan Provisions for Four Corners Power Plant, Navajo Nation

2014 40 CFR 49.5512 – Federal Implementation Plan Provisions for Four Corners Power Plant, Navajo Nation