§ 49.4172 Emissions inventory.

(a) Applicability. The emissions inventory requirements of this section apply to each oil and natural gas source, as identified in § 49.4169(b), that has actual emissions of any pollutant identified in paragraph (c) of this section greater than or equal to one ton in any consecutive 12-month period.

(b) Each oil and natural gas source must submit an inventory for every third year, beginning with the 2023 calendar year, for all emission units at a source.