Does 'Upon commencement of commercial operation of each new utility unit under subpart 1 of part B, the unit shall comply with the requirements of subsection (a)(1).' logically set the stage for the hypothesis 'the unit shall comply with the requirements of subsection a1 under certain conditions.'
Upon commencement of commercial operation of each new utility unit under subpart 1 of part B, the unit shall comply with the requirements of subsection (a)(1).###the unit shall comply with the requirements of subsection a1 under certain conditions.