StacksVerified U.S. regulatory reference

40 CFR Part 266, Appendix XIII

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov

These are exempt mercury-bearing materials with less than 500 ppm of 40 CFR Part 261, appendix VIII organic constituents when generated by manufacturers or users of mercury or mercury products.

[59 FR 48042, Sept. 19, 1994, as amended at 71 FR 40278, July 14, 2006]