2024 40 CFR 257.72 – Liner design criteria for new CCR surface impoundments and any lateral expansion of a CCR surface impoundment

2023 40 CFR 257.72 – Liner design criteria for new CCR surface impoundments and any lateral expansion of a CCR surface impoundment

2022 40 CFR 257.72 – Liner design criteria for new CCR surface impoundments and any lateral expansion of a CCR surface impoundment

2021 40 CFR 257.72 – Liner design criteria for new CCR surface impoundments and any lateral expansion of a CCR surface impoundment

2020 40 CFR 257.72 – Liner design criteria for new CCR surface impoundments and any lateral expansion of a CCR surface impoundment

2019 40 CFR 257.72 – Liner design criteria for new CCR surface impoundments and any lateral expansion of a CCR surface impoundment

2016 40 CFR 257.72 – Liner design criteria for new CCR surface impoundments and any lateral expansion of a CCR surface impoundment

2015 40 CFR 257.72 – Liner design criteria for new CCR surface impoundments and any lateral expansion of a CCR surface impoundment