- (1) The source shall be allowed to make changes not specifically addressed or prohibited by the permit terms and conditions without requiring a permit revision, provided that the proposed changes do not weaken the enforceability of existing permit conditions. Any change that is a Title I modification or is a change subject to the acid rain requirements under Title IV of the FCAA must be submitted as a permit revision.
- (2) Each such change shall meet all applicable requirements and shall not violate any existing permit term or condition.
- (3) Sources must provide contemporaneous written notice to the permitting authority and EPA of each such change, except for changes that qualify as insignificant under WAC 173-401-530. Such written notice shall describe each such change, including the date, any change in emissions, pollutants emitted, and any applicable requirement that would apply as a result of the change.
- (4) The change shall not qualify for the permit shield under WAC 173-401-640.
- (5) The permittee shall keep a record describing changes made at the source that result in emissions of a regulated air pollutant subject to an applicable requirement, but not otherwise regulated under the permit, and the emissions resulting from those changes.
- (6) A source making a change under this section shall comply with applicable preconstruction review requirements established pursuant to RCW 70A.15.2210.
[Statutory Authority: Chapter 70A.15 RCW and RCW 70A.02.060. WSR 25-05-042 (Order 23-08), s 173-401-724, filed 2/12/25, effective 3/15/25. Statutory Authority: RCW 70.94.011, 70.94.161, 70.94.162, 70.94.331, and 70.94.510. WSR 16-05-003 (Order 13-12), § 173-401-724, filed 2/3/16, effective 3/5/16. Statutory Authority: Chapter 70.94 RCW. WSR 93-20-075 (Order 91-68), § 173-401-724, filed 10/4/93, effective 11/4/93.]