Q445. What gases must be reported by oil and natural gas system facilities?

Summary of Source Types by Industry SegmentA444. Facilities that emit 25,000 metric tons or more of CO2e per year must report. The rule defines three different types of facilities. You must apply the 25,000 ton per year threshold separately to each facility to determine if that facility must report.
• For the onshore petroleum and natural gas production industry segment, a facility is defined generally as all emission source types (see the table below) on a well pad or associated with a well pad that are under common ownership or control in a single hydrocarbon basin, as defined by the American Association of Petroleum Geologists.
• For natural gas distribution industry segment, a facility generally is defined as the collection of all pipelines, metering stations, and regulating stations that are operated by a single local distribution company.
• For all other industry segments, use the facility definition in the General Provisions to part 98. Under this definition, a facility is defined generally as all sources for which emission calculation methods are provided in 40 CFR part 98 (including those in the table below) and that are located on a contiguous property and under common ownership or common control.
See 40 CFR part 98, subparts A and W for the precise definition of each of the three “facility” types.

* Calculation methodologies for determining flare emissions are outlined in subpart W under applicable emissions sources.