40 CFR § 63.8798
By what date must I conduct performance tests or other initial compliance demonstrations?
June 9, 2020
(a) For each loop slitter affected source, you must conduct the initial compliance demonstration by the compliance date that is specified for your source in §63.8786.
(b) For each new or reconstructed flame lamination affected source, you must conduct performance tests within 180 calendar days after the compliance date that is specified for your source in §63.8786 and according to the provisions in §63.7(a)(2).