Regulations last checked for updates: Feb 21, 2025

Title 40 - Protection of Environment last revised: Nov 21, 2025

PLAN FOR THE CONTROL OF DESIGNATED POLLUTANTS FROM EXISTING FACILITIES (SECTION 111(D) PLAN)
SULFURIC ACID MIST FROM EXISTING SULFURIC ACID PLANTS
FLUORIDE EMISSIONS FROM PHOSPHATE FERTILIZER PLANTS
FLUORIDE EMISSIONS FROM PRIMARY ALUMINUM REDUCTION PLANTS
TOTAL REDUCED SULFUR EMISSIONS FROM KRAFT PULP MILLS
MUNICIPAL WASTE COMBUSTORS

AIR EMISSIONS FROM SMALL EXISTING MUNICIPAL WASTE COMBUSTION UNITS
AIR EMISSIONS FROM COMMERCIAL AND INDUSTRIAL SOLID WASTE INCINERATION (CISWI) UNITS (SECTION 111(D)/129 PLAN)
authority: 42 U.S.C. 7401
source: 43 FR 51393, Nov. 3, 1978, unless otherwise noted.