Versions of 40 CFR 61.243-1 - Alternative standards for valves in VHAP service--allowable percentage of valves leaking on LawServer 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