2024 40 CFR 61.243-1 – Alternative standards for valves in VHAP service–allowable percentage of valves leaking

2023 40 CFR 61.243-1 – Alternative standards for valves in VHAP service – allowable percentage of valves leaking

2022 40 CFR 61.243-1 – Alternative standards for valves in VHAP service – allowable percentage of valves leaking

2021 40 CFR 61.243-1 – Alternative standards for valves in VHAP service – allowable percentage of valves leaking

2015 40 CFR 61.243-1 – Alternative standards for valves in VHAP service–allowable percentage of valves leaking

2014 40 CFR 61.243-1 – Alternative standards for valves in VHAP service-allowable percentage of valves leaking

2010 40 CFR 61.243-1 – Alternative standards for valves in VHAP service–allowable percentage of valves leaking