Versions of Washington Code 70A.15.6440 - Stationary natural gas engines used in combined heat and power systems -- Permitting process -- Emission limits on LawServer 2023 Washington Code 70A.15.6440 – Stationary natural gas engines used in combined heat and power systems — Permitting process — Emission limits 2022 Washington Code 70A.15.6440 – Stationary natural gas engines used in combined heat and power systems–Permitting process–Emission limits 2020 Washington Code 70A.15.6440 – Stationary natural gas engines used in combined heat and power systems — Permitting process — Emission limits
