2024 40 CFR 52.2308 – Area-wide nitrogen oxides (NOX) exemptions

2023 40 CFR 52.2308 – Area-wide nitrogen oxides (NOX) exemptions

2022 40 CFR 52.2308 – Area-wide nitrogen oxides (NOX) exemptions

2021 40 CFR 52.2308 – Area-wide nitrogen oxides (NOX) exemptions

2015 40 CFR 52.2308 – Area-wide nitrogen oxides (NOX) exemptions

2014 40 CFR 52.2308 – Area-wide nitrogen oxides (NOX) exemptions

2010 40 CFR 52.2308 – Area-wide nitrogen oxides (NOX) exemptions

2009 40 CFR 52.2308 – Area-wide nitrogen oxides (NOX) exemptions