§ 60.6525 What schedule must I follow for the stack testing?
(a) Conduct initial stack tests for sulfur dioxide, nitrogen oxides, and each of the pollutants listed in § 60.6515 by 180 days after your final compliance date.
(b) Conduct annual stack tests for each of the pollutants listed in § 60.6515 after the initial stack test. Conduct each annual stack test no less than 9 calendar months and no more than 15 calendar months following the previous performance test, except as specified in § 60.6540 of this section. You must complete five performance tests in each 5-year calendar period.