Code of Federal Regulations > Title 40 > Chapter I > Part 257 > Subpart D > Appendix Appendix IV - Appendix IV to Part 257

Regulations last checked for updates: May 15, 2024

Title 40 - Protection of Environment last revised: May 13, 2024

Appendix Appendix IV - Appendix IV to Part 257—Constituents for Assessment Monitoring

¹ Common names are those widely used in government regulations, scientific publications, and commerce; synonyms exist for many chemicals.

[80 FR 21500, Apr. 17, 2015]

authority: 42 U.S.C. 6907(a)(3), 6912(a)(1), 6944, 6945(a) and (d); 33 U.S.C. 1345(d) and (e)

source: 44 FR 53460, Sept. 13, 1979, unless otherwise noted.