SECTION 11. EFFECTIVE DATE

The provisions of this notice are effective on March 9, 2020. Taxpayers that began construction on a qualified facility or carbon capture equipment by satisfying either the Physical Work Test or the Five Percent Safe Harbor Test, or both, before the effective date of this notice, may use the effective date of this notice as the date that construction began on such qualified facility or carbon capture equipment. A taxpayer that began construction on a qualified facility or carbon capture equipment before the effective date of this notice under both the Physical Work Test and the Five Percent Safe Harbor may choose either method (but not both) for the purpose of applying the beginning of construction rules of this notice.