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Regulations last checked for updates: Nov 23, 2024
Title 40 - Protection of Environment last revised: Nov 21, 2024
All Titles
Title 40
Chapter I
Part 58
Subpart F - Subpart F—Air Quality Index Reporting
§ 58.50 - Index reporting.
authority:
42 U.S.C. 7403
,
7405
,
7410
,
7414
,
7601
,
7611
,
7614
,
and
source:
44 FR 27571, May 10, 1979; 59 FR 41628, Aug. 12, 1994, unless otherwise noted.
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