Applicability
(a) Applicability. The requirements of this section apply to all owners or operators of the collection of fugitive emissions components, as defined in 49.4171, located at any oil and natural gas source, as identified in 49.4169(b), except that this section does not apply to owners or operators of the collection of fugitive emissions components at an oil and natural gas source that is subject to the fugitive emissions monitoring requirements in 40 CFR part 60, subpart OOOOa.