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Q724. Why are emissions from petroleum and natural gas systems - onshore production represented by geographic areas instead of individual point sources?
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A724. Reporters in the petroleum and natural gas systems - onshore production source category operate many pieces of equipment and production wells over large geographic areas. These reporters aggregate their total emissions across these sources within a 'basin' and submit a single report to EPA including emissions from all covered sources within the basin. To better represent the geographic area where these emissions occur, EPA has added a GIS layer to FLIGHT that indicates the boundaries of each basin where emissions emanate from. [Learn more about basins|Q734. How does EPA define a "facility" for petroleum and natural gas systems?].

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Source: Brian Cook, 2/1/2013 (Public FAQs 1-31-13.doc), revised as directed by Brian Cook, 2/12/2013

Approval / Publishing History: Version 1 (Public FAQs 1-31-13.doc)

Expiration: none

Relevant Subpart/Component: GHG Data and Publication
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