40 CFR § 63.3170
By what date must I conduct performance tests and other initial compliance demonstrations?
June 9, 2020
(a) New and reconstructed affected sources. For a new or reconstructed affected source, you must meet the requirements of paragraphs (a)(1) through (4) of §63.3160.
(b) Existing affected sources. For an existing affected source, you must meet the requirements of paragraphs (b)(1) through (3) of §63.3160.