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Regulations last checked for updates: May 12, 2025
Title 40 - Protection of Environment last revised: Apr 12, 2028
All Titles
Title 40
Chapter I
Part 60
Subpart NN - Subpart NN—Standards of Performance for Phosphate Rock Plants
§ 60.400 - Applicability and designation of affected facility.
§ 60.401 - Definitions.
§ 60.402 - Standard for particulate matter.
§ 60.403 - Monitoring of emissions and operations.
§ 60.404 - Test methods and procedures.
authority:
42 U.S.C. 7401
source:
36 FR 24877, Dec. 23, 1971, unless otherwise noted.
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