Regulation IV - Prohibitions

TOC (PDF)
Table of Contents

Rule 401 
(PDF)

Visible Emissions
(Amended November 9, 2001)

Rule 402 
(PDF)

Nuisance
(Adopted May 7, 1976)

Rule 403 
(PDF)

Fugitive Dust
(Amended June 3, 2005)

Rule 403.1
(PDF)

Supplemental Fugitive Dust Control Requirements for Coachella Valley Sources
(Amended April 2, 2004)

Rule 404
(PDF)

Particulate Matter - Concentration
(Amended February 7, 1986)

Rule 405
(PDF)

Solid Particulate Matter - Weight
(Amended February 7, 1986)

Rule 406
(PDF)

Reserved

Rule 407
(PDF)

Liquid and Gaseous Air Contaminants
(Amended April 2, 1982)

Rule 408
(PDF)

Circumvention
(Adopted May 7, 1976)

Rule 409
(PDF)

Combustion Contaminants
(Amended August 7, 1981)

Rule 410
(PDF)

Odors from Transfer Stations and Material Recovery Facilities
(Adopted October 6, 2006)

Rule 415
(PDF)

Odors from Rendering Facilities
(Adopted November 3, 2017)

Rule 429
(PDF)

Start-Up and Shutdown Exemption Provisions for Oxides of Nitrogen
(Amended December 21, 1990)

Rule 430
(PDF)

Breakdown Provisions
(Amended July 12, 1996)

Rule 431
(PDF)

Sulfur Content of Fuels
(Repealed December 2, 1977)

Rule 431.1
(PDF)

Sulfur Content of Gaseous Fuels
(Amended June 12, 1998)

Rule 431.2
(PDF)

Sulfur Content of Liquid Fuels
(Amended September 15, 2000)

Rule 431.3
(PDF)

Sulfur Content of Fossil Fuels
(Adopted May 7, 1976)

Rule 432
(PDF)

Gasoline Specifications
(Rescinded July 10, 1998)

Rule 433
(PDF)

Natural Gas Quality
(Adopted June 5, 2009)

Rule 441
(PDF)

Research Operations
(Adopted May 7, 1976)

Rule 442
(PDF)

Usage of Solvents
(Amended December 15, 2000)

Rule 443
(PDF)

Labeling of Solvents
(Adopted May 7, 1976)

Rule 443.1
(PDF)

Labeling of Materials Containing Organic Solvents
(Adopted December 5, 1986)

Rule 444
(PDF)

Open Burning
(Amended July 12, 2013)

Rule 445
(PDF)

Wood Burning Devices
(Adopted May 3, 2013)

Rule 461
(PDF)

Gasoline Transfer and Dispensing
(Amended April 6, 2012)

Rule 462
(PDF)

Organic Liquid Loading
(Amended May 14, 1999)

Rule 463
(PDF)

Organic Liquid Storage
(Amended November 4, 2011)

Rule 464
(PDF)

Wastewater Separators
(Amended December 7, 1990)

Rule 465
(PDF)

Refinery Vacuum-Producing Devices or Systems
(Amended August 13, 1999)

Rule 466
(PDF)

Pumps and Compressors
(Amended October 7, 1983)

Rule 466.1
(PDF)

Valves and Flanges
(Amended March 16, 1984)

Rule 467
(PDF)

Pressure Relief Devices
(Amended March 5, 1982)

Rule 468
(PDF)

Sulfur Recovery Units
(Amended October 8, 1976)

Rule 469
(PDF)

Sulfuric Acid Units
(Amended February 13, 1981)

Rule 470
(PDF)

Asphalt Air Blowing
(Adopted May 7, 1976)

Rule 471
(PDF)

Asphalt or Coal Tar Equipment
(Rescinded September 7, 1979)

Rule 472
(PDF)

Reduction of Animal Matter
(Adopted May 7, 1976)

Rule 473
(PDF)

Disposal of Solid and Liquid Wastes
(Adopted May 7, 1976)

Rule 474
(PDF)

Fuel Burning Equipment - Oxides of Nitrogen
(Amended December 4, 1981)

Rule 475
(PDF)

Electric Power Generating Equipment
(Amended August 7, 1978)

Rule 475.1
(PDF)

Reduction of Oxides of Nitrogen
(CARB deleted March 27, 1980; Refer to Rule 1135.1)

Rule 476
(PDF)

Steam Generating Equipment
(Amended October 8, 1976)

Rule 477
(PDF)

Coke Ovens
(Amended April 3, 1981)

Rule 480 (PDF)

Natural Gas Fired Control Devices
(Adopted October 7, 1977)

Rule 481
(PDF)

Spray Coating Operations
(Amended January 11, 2002)

Addendum to Regulation IV (PDF)

Several rules that were developed by county agencies that preceded the SCAQMD are still in effect in those counties. These rules are found in the Addendum to Regulation IV (PDF, 12.7kb).

Los Angeles County
Rule 53 - Sulfur Compounds - Concentration

Orange County
Rule 53 - Sulfur Compounds - Concentration
Rule 68.2 - Nitric Acid Plants (Rescinded December 6, 1985)

Riverside County
Rule 53 - Specific Air Contaminants

San Bernardino County
Rule 53 - Specific Contaminants
Rule 53A - Specific Contaminants