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Title 40

Displaying title 40, up to date as of 6/09/2026. Title 40 was last amended 6/08/2026.
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Appendix IV to Part 257—Constituents for Assessment Monitoring

Common name 1
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium
Cobalt
Fluoride
Lead
Lithium
Mercury
Molybdenum
Selenium
Thallium
Radium 226 and 228 combined
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]