Regulations last checked for updates: May 13, 2025

Title 40 - Protection of Environment last revised: Nov 13, 2025
All TitlesTitle 40Chapter IPart 50Appendix Appendix B - Appendix B to Part 50—Reference Method for the Determination of Suspended Particulate Matter in the Atmosphere (High-Volume Method)
Collapse to view onlyAppendix Appendix B - Appendix B to Part 50—Reference Method for the Determination of Suspended Particulate Matter in the Atmosphere (High-Volume Method)
Table of Contents

authority: 42 U.S.C. 7401,
source: 36 FR 22384, Nov. 25, 1971, unless otherwise noted.
© 2014 CustomsMobile | Disclaimer | Privacy | About