Jump to main content or area navigation.

Contact Us

Greenhouse Gas Reporting Program

Subpart W – Petroleum and Natural Gas Systems

You will need Adobe Reader to view some of the files on this page. See EPA’s PDF page to learn more.

Owners or operators of facilities that contain petroleum and natural gas systems and emit 25,000 metric tons or more of GHGs per year (expressed as carbon dioxide equivalents) report GHG data to EPA. Owners or operators collect GHG data; calculate GHG emissions; and follow the specified procedures for quality assurance, missing data, recordkeeping, and reporting. Subpart W consists of emission sources in eight segments of the petroleum and natural gas industry.

On February 7, 2014 the Administrator signed a proposed rule that would amend the Petroleum and Natural Gas Systems source category (subpart W) of the Greenhouse Gas Reporting Program. The proposal includes revisions to certain calculation methods, monitoring and data reporting requirements, terms and definitions, and corrects technical and editorial errors that were identified during the course of implementation. This action also proposes confidentiality determinations for new or substantially revised data elements contained in these proposed amendments, and proposes a revised confidentiality determination for one existing data element. More information »

Top of Page

Jump to main content.