Versions of See prior versions of a law on LawServer 2024 40 CFR 52.540 – Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of nitrogen oxides? 2023 40 CFR 52.540 – Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of nitrogen oxides? 2022 40 CFR 52.540 – Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of nitrogen oxides? 2021 40 CFR 52.540 – Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of nitrogen oxides? 2016 40 CFR 52.540 – Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of nitrogen oxides? 2015 40 CFR 52.540 – Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of nitrogen oxides? 2014 40 CFR 52.540 – Interstate pollutant transport provisions; What are the FIP requirements for decreases in emissions of nitrogen oxides?