CFR > Title 40 > Chapter I > Subchapter C > Part 51 > Subpart A > General Information for Inventory Preparers CFR > Title 40 > Chapter I > Subchapter C > Part 51 > Subpart A > General Information for Inventory Preparers Current as of: 2024 | Check for updates | Other versions § 51.1 Who is responsible for actions described in this subpart? § 51.5 What tools are available to help prepare and report emissions data?