Title 40 is a part of the United States Code of Federal Regulations. Title 40 arranges mainly environmental regulations that were promulgated by the

US Environmental Protection Agency The Environmental Protection Agency (EPA) is an independent executive agency of the United States federal government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it be ...

(EPA), based on the provisions of United States laws (statutes of the U.S. Federal Code). Parts of the regulation may be updated annually on July 1.

Chapter I - Environmental Protection Agency

*Subchapter A - General (Parts 1 - 29) *Subchapter B - Grants and Other Federal Assistance (Parts 30 - 49) *Subchapter C - Air Programs (Parts 50 - 97) ( Clean Air Act) ** National Ambient Air Quality Standards (NAAQS) ***

Criteria air contaminants The U.S. National Ambient Air Quality Standards (NAAQS, pronounced ) are limits on atmospheric concentration of six pollutants that cause smog, acid rain, and other health hazards. Established by the United States Environmental Protection Agenc ...

**Requirements for Preparation, Adoption and Submittal of Implementation Plans **Approval and Promulgation of Implementation Plans ** Ambient Air Monitoring Reference and Equivalent Methods **Prior Notice of

Citizen Suits In the United States, a citizen suit is a lawsuit by a private citizen to enforce a statute. Citizen suits are particularly common in the field of environmental law. Citizen suits come in three forms. First, a private citizen can bring a lawsu ...

**Outer Continental Shelf Air Regulations **Regional Consistency **Primary Nonferrous Smelter Orders **Ambient Air Quality Surveillance **National

Volatile Organic Compound Volatile organic compounds (VOCs) are organic compounds that have a high vapour pressure at room temperature. High vapor pressure correlates with a low boiling point, which relates to the number of the sample's molecules in the surrounding air, a ...

Emission Standards for Consumer and Commercial Products ** Standards of Performance for New Stationary Sources (NSPS) **

National Emissions Standards for Hazardous Air Pollutants The National Emission Standards for Hazardous Air Pollutants (NESHAP) are air pollution standards issued by the United States Environmental Protection Agency (EPA). The standards, authorized by the Clean Air Act, are for pollutants not covered by ...

(NESHAP) **Approval and Promulgation of State Plans for Designated Facilities and Pollutants **Compliance Assurance Monitoring **Consolidated Federal Air Rule **Assessment and Collection of Noncompliance Penalties by EPA **EPA Approval of State Noncompliance Penalty Program **Chemical Accident Prevention Provisions **Special Exemptions From Requirements of the Clean Air Act ** State Operating Permit Programs **Federal Operating Permit Programs **Permits Regulation ** Sulfur Dioxide Allowance System **Sulfur Dioxide Opt-Ins **Continuous Emission Monitoring ** Acid Rain Nitrogen Oxides Emission Reduction Program **Excess Emissions **Appeal Procedures **Registration of Fuels and

Fuel Additives A fuel is any material that can be made to react with other substances so that it releases energy as thermal energy or to be used for work. The concept was originally applied solely to those materials capable of releasing chemical energy but ...

**Regulation of Fuels and Fuel Additives **Designation Of Areas for Air Quality Planning Purposes ** Protection of Stratospheric Ozone **

Significant New Alternatives Policy The Significant New Alternatives Policy (also known as Section 612 of the Clean Air Act (United States), Clean Air Act or SNAP, promulgated at 40 CFR part 82 Subpart G) is a program of the EPA to determine acceptable chemical substitutes, and esta ...

(SNAP) **Control of Air Pollution From Mobile Sources **Control of Emissions From New and In-Use Highway Vehicles and Engines **Control of Air Pollution From Aircraft and

Aircraft Engines An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Most aircraft engines are either piston engines or gas turbines, although a few have been rocket powered and in recent years many ...

** Clean-Fuel Vehicles **Control of Emissions From New and In-Use Nonroad Compression-Ignition Engines **Control of Emissions From Nonroad Spark-Ignition Engines at or Below 19 Kilowatts **Control of Emissions From Marine Spark-Ignition Engines **Control of Air Pollution From

Locomotives A locomotive or engine is a rail transport vehicle that provides the motive power for a train. If a locomotive is capable of carrying a payload, it is usually rather referred to as a multiple unit, motor coach, railcar or power car; the ...

and Locomotive Engines **Determining Conformity of Federal Actions to State or Federal Implementation Plans **Control of Emissions From Marine Compression-Ignition Engines **Mandatory Patent Licenses **NOx Budget Trading Program and CAIR NOx And SO2 Trading Programs for State Implementation Plans **Federal NOx Budget Trading Program and CAIR NOx and SO2 Trading Programs *Subchapter D - Water Programs (Parts 100 - 149) ** Clean Water Act ***Public Hearings on Effluent Standards for Toxic Pollutants ***Recognition Awards Under the Clean Water Act ***Employee Protection Hearings ***Criteria for State, Local and Regional Oil Removal Contingency Plans *** Discharge of Oil ***

Oil Pollution An oil spill is the release of a liquid petroleum hydrocarbon into the environment, especially the marine ecosystem, due to human activity, and is a form of pollution. The term is usually given to marine oil spills, where oil is released into th ...

Prevention ***Liability Limits for Small Onshore Storage Facilities ***Designation of Hazardous Substances ***Determination of Reportable Quantities For Hazardous Substances ***State Certification of Activities Requiring a Federal License or Permit ***EPA-Administered Permit Programs: The National Pollutant Discharge Elimination System ***State Program Requirements ***Procedures for Decisionmaking ***Criteria and Standards for the National Pollutant Discharge Elimination System ***Toxic Pollutant Effluent Standards ***Water Quality Planning and Management ***Water Quality Standards ***Water Quality Guidance for the Great Lakes System ***

Secondary Treatment Secondary treatment is the removal of biodegradable organic matter (in solution or suspension) from sewage or similar kinds of wastewater. The aim is to achieve a certain degree of effluent quality in a sewage treatment plant suitable for the inte ...

Regulation ***Prior Notice of

***Guidelines Establishing Test Procedures for the Analysis of Pollutants *** Marine Sanitation Device Standard **

Safe Drinking Water Act The Safe Drinking Water Act (SDWA) is the principal federal law in the United States intended to ensure safe drinking water for the public. Pursuant to the act, the Environmental Protection Agency (EPA) is required to set standards for drinking wa ...

***National Primary Drinking Water Regulations ***National Primary Drinking Water Regulations Implementation ***National Secondary Drinking Water Regulations *** Underground Injection Control (UIC) Program ***State UIC Program Requirements ***Underground Injection Control Program: Criteria and Standards ***State Underground Injection Control Programs *** Hazardous Waste Injection Restrictions ***Sole Source Aquifers ***Standards on the Maximum Contaminant Level of drinking water (

microorganism A microorganism, or microbe,, ''mikros'', "small") and ''organism'' from the el, ὀργανισμός, ''organismós'', "organism"). It is usually written as a single word but is sometimes hyphenated (''micro-organism''), especially in olde ...

virus A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Since Dmitri Ivanovsk ...

es,

turbidity Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air. The measurement of turbidity is a key test of water quality. Fluids ...

, inorganic chemicals,

organic chemical In chemistry, organic compounds are generally any chemical compounds that contain carbon-hydrogen or carbon-carbon bonds. Due to carbon's ability to catenate (form chains with other carbon atoms), millions of organic compounds are known. The ...

s, disinfectants and disinfection byproducts, radionuclides ) *Subchapter E - Pesticide Programs (Parts 150 - 180) **Worker protection standards and enforcement by the

Occupational Safety and Health Administration The Occupational Safety and Health Administration'' (OSHA ) is a large regulatory agency of the United States Department of Labor that originally had federal visitorial powers to inspect and examine workplaces. Congress established the agenc ...

**Tolerances and exemptions from tolerances for pesticide chemicals in food **Pesticide Registration and Classification Procedures ***

Pesticides classified for restricted use Restricted use pesticides (RUP) are pesticides not available to the general public in the United States. Fulfilling its pesticide regulation responsibilities, the United States Environmental Protection Agency (EPA) registers all pesticides and ins ...

**Standards for certification of commercial and private applicators *Subchapter F - Radiation Protection Programs (Parts 190 - 197) **Environmental radiation protection standards for nuclear power operations **Management and disposal of spent nuclear fuel, high-level and

transuranic The transuranium elements (also known as transuranic elements) are the chemical elements with atomic numbers greater than 92, which is the atomic number of uranium. All of these elements are unstable and decay radioactively into other elements. ...

radioactive wastes **Protection standards for

uranium Uranium is a chemical element with the symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium is weak ...

and

thorium Thorium is a weakly radioactive metallic chemical element with the symbol Th and atomic number 90. Thorium is silvery and tarnishes black when it is exposed to air, forming thorium dioxide; it is moderately soft and malleable and has a high ...

mill tailings **

Radon Radon is a chemical element with the symbol Rn and atomic number 86. It is a radioactive, colourless, odourless, tasteless noble gas. It occurs naturally in minute quantities as an intermediate step in the normal radioactive decay chains through ...

programs *Subchapter G -

Noise Abatement Noise control or noise mitigation is a set of strategies to reduce noise pollution or to reduce the impact of that noise, whether outdoors or indoors. Overview The main areas of noise mitigation or abatement are: transportation noise control, ...

Programs (Parts 201 - 211) **Noise emission standards for transportation equipment **Product noise labeling *Subchapter H -

Ocean Dumping The ocean (also the sea or the world ocean) is the body of salt water that covers approximately 70.8% of the surface of Earth and contains 97% of Earth's water. An ocean can also refer to any of the large bodies of water into which the worl ...

(Parts 220 - 238) based on the

Ocean Dumping Ban Act Marine Protection, Research and Sanctuaries Act of 1972 (MPRSA) or Ocean Dumping Act is one of several key environmental laws passed by the US Congress in 1972. The Act has two essential aims: to regulate intentional ocean disposal of materials, ...

**ocean dumping, dredge and fill permit application process *Subchapter I - Solid Wastes (Parts 239 - 282) based on the

Resource Conservation and Recovery Act The Resource Conservation and Recovery Act (RCRA), enacted in 1976, is the principal federal law in the United States governing the disposal of solid waste and hazardous waste.United States. Resource Conservation and Recovery Act. , , ''et seq., ...

(RCRA) **Guidelines for the thermal processing (

incineration Incineration is a waste treatment process that involves the combustion of substances contained in waste materials. Industrial plants for waste incineration are commonly referred to as waste-to-energy facilities. Incineration and other high ...

) of solid wastes **Guidelines for the storage and collection of residential, commercial, and institutional solid waste ** Criteria for classification of solid waste disposal facilities and practices **Criteria for municipal solid waste landfills **Identification and listing of hazardous waste **Technical standards and corrective action requirements for owners and operators of

underground storage tank An underground storage tank (UST) is, according to United States federal regulations, a storage tank, including any underground piping connected to the tank, that has at least 10 percent of its volume underground. Definition & Regulation in U.S. ...

s (UST) *Subchapter J - Superfund (Parts 300 - 374) based on the

Emergency Planning and Community Right-to-Know Act The Emergency Planning and Community Right-to-Know Act of 1986 is a United States federal law passed by the 99th United States Congress located at Title 42, Chapter 116 of the U.S. Code, concerned with emergency response preparedness. On October ...

(EPCRA) **Hazardous substances designation, reportable quantities, and notification **Hazardous chemical reporting: Community right-to-know **Toxic chemical release reporting: Community right-to-know *Subchapter N -

Effluent Guidelines Effluent Guidelines (also referred to as Effluent Limitation Guidelines (ELGs)) are U.S. national standards for wastewater discharges to surface waters and publicly owned treatment works (POTW) (also called municipal sewage treatment plants). The U ...

and Standards (Parts 400 - 471) ( Clean Water Act) ** General pretreatment regulations for existing and new sources of pollution **

Point source A point source is a single identifiable ''localised'' source of something. A point source has negligible extent, distinguishing it from other source geometries. Sources are called point sources because in mathematical modeling, these sources ca ...

categories: *** Dairy products processing ***

Grain mill A gristmill (also: grist mill, corn mill, flour mill, feed mill or feedmill) grinds cereal grain into flour and middlings. The term can refer to either the grinding mechanism or the building that holds it. Grist is grain that has been separated ...

s *** Canned and preserved fruits and vegetables processing ***Canned and preserved seafood processing *** Sugar processing ***

Textile mill Textile Manufacturing or Textile Engineering is a major industry. It is largely based on the conversion of fibre into yarn, then yarn into fabric. These are then dyed or printed, fabricated into cloth which is then converted into useful goods ...

s *** Cement manufacturing ***

Concentrated animal feeding operation In animal husbandry, a concentrated animal feeding operation (CAFO), as defined by the United States Department of Agriculture (USDA), is an intensive animal farming, intensive animal feeding operation (AFO) in which over 1,000 animal units are c ...

s (CAFO) *** Electroplating *** Organic chemicals, plastics, and synthetic fibers (OCPSF) *** Inorganic chemicals manufacturing ***

Soap Soap is a salt of a fatty acid used in a variety of cleansing and lubricating products. In a domestic setting, soaps are surfactants usually used for washing, bathing, and other types of housekeeping. In industrial settings, soaps are use ...

and detergent manufacturing ***

Fertilizer A fertilizer (American English) or fertiliser (British English; see spelling differences) is any material of natural or synthetic origin that is applied to soil or to plant tissues to supply plant nutrients. Fertilizers may be distinct from ...

manufacturing ***

Petroleum refining An oil refinery or petroleum refinery is an industrial process plant where petroleum (crude oil) is transformed and refined into useful products such as gasoline (petrol), diesel fuel, asphalt base, fuel oils, heating oil, kerosene, liquefi ...

*** Iron and steel manufacturing *** Nonferrous metals manufacturing (smelters) *** Phosphate manufacturing *** Steam electric power generating *** Ferroalloy manufacturing *** Leather tanning and finishing ***

Glass manufacturing Glass production involves two main methods – the float glass process that produces sheet glass, and glassblowing that produces bottles and other containers. It has been done in a variety of ways during the history of glass. Glass container ...

*** Asbestos manufacturing ***

Rubber manufacturing A synthetic rubber is an artificial elastomer. They are polymers synthesized from petroleum byproducts. About 32-million metric tons of rubbers are produced annually in the United States, and of that amount two thirds are synthetic. Synthetic rubbe ...

*** Timber products processing ***

Pulp Pulp may refer to: * Pulp (fruit), the inner flesh of fruit Engineering * Dissolving pulp, highly purified cellulose used in fibre and film manufacture * Pulp (paper), the fibrous material used to make paper * Molded pulp, a packaging material ...

paper Paper is a thin sheet material produced by mechanically or chemically processing cellulose fibres derived from wood, rags, grasses or other vegetable sources in water, draining the water through fine mesh leaving the fibre evenly distrib ...

, and paperboard *** Meat and poultry products *** Metal finishing *** Coal mining ***

Oil An oil is any nonpolar chemical substance that is composed primarily of hydrocarbons and is hydrophobic (does not mix with water) & lipophilic (mixes with other oils). Oils are usually flammable and surface active. Most oils are unsaturated ...

and

gas extraction Natural gas (also called fossil gas or simply gas) is a naturally occurring mixture of gaseous hydrocarbons consisting primarily of methane in addition to various smaller amounts of other higher alkanes. Low levels of trace gases like carbon di ...

*** Minerals mining and processing *** Centralized waste treatment *** Metal products and machinery ***

Pharmaceutical manufacturing Pharmaceutical manufacturing is the process of industrial-scale synthesis of pharmaceutical drugs as part of the pharmaceutical industry. The process of drug manufacturing can be broken down into a series of unit operations, such as milling, g ...

***

Ore mining Ore is natural rock or sediment that contains one or more valuable minerals, typically containing metals, that can be mined, treated and sold at a profit.Encyclopædia Britannica. "Ore". Encyclopædia Britannica Online. Retrieved 7 April ...

and dressing (Hard rock mining) ***

Dental offices Dental may refer to: * Dental consonant, in phonetics * Dental Records, an independent UK record label * Dentistry, oral medicine * Teeth See also * * Dental care (disambiguation) * Dentist (disambiguation) A dentist is a practitioner of denti ...

*** Transportation equipment cleaning *** Paving and

roofing materials Roofing material is the outermost layer on the roof of a building, sometimes self-supporting, but generally supported by an underlying structure. A building's roofing material provides shelter from the natural elements. The outer layer of a roof ...

(Tars and asphalt) *** Waste combustors *** Landfills *** Paint formulating ***

Ink Ink is a gel, sol, or solution that contains at least one colorant, such as a dye or pigment, and is used to color a surface to produce an image, text, or design. Ink is used for drawing or writing with a pen, brush, reed pen, or quill. Thicker ...

formulating *** Airport deicing ***

Construction Construction is a general term meaning the art and science to form Physical object, objects, systems, or organizations,"Construction" def. 1.a. 1.b. and 1.c. ''Oxford English Dictionary'' Second Edition on CD-ROM (v. 4.0) Oxford University Pr ...

and development *** Concentrated aquatic animal production (Aquaculture) *** Gum and wood chemicals manufacturing *** Pesticide chemicals *** Explosives manufacturing ***

Carbon black Carbon black (subtypes are acetylene black, channel black, furnace black, lamp black and thermal black) is a material produced by the incomplete combustion of coal and coal tar, vegetable matter, or petroleum products, including fuel oil, fluid ...

manufacturing ***

Photographic processing Photographic processing or photographic development is the chemical means by which photographic film or paper is treated after photographic exposure to produce a negative or positive image. Photographic processing transforms the latent image in ...

***

Hospitals A hospital is a health care institution providing patient treatment with specialized health science and auxiliary healthcare staff and medical equipment. The best-known type of hospital is the general hospital, which typically has an emerge ...

*** Battery manufacturing *** Plastics molding and forming *** Metal molding and

Casting Casting is a manufacturing process in which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify. The solidified part is also known as a ''casting'', which is ejected ...

(Foundries) *** Coil coating *** Porcelain enameling *** Aluminum forming *** Copper forming ***

Electrical Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described ...

and

electronic Electronic may refer to: *Electronics, the science of how to control electric energy in semiconductor * ''Electronics'' (magazine), a defunct American trade journal *Electronic storage, the storage of data using an electronic device *Electronic co ...

components *** Nonferrous metals forming and metal powders *Subchapter O -

Sewage Sludge Sewage sludge is the residual, semi-solid material that is produced as a by-product during sewage treatment of industrial or municipal wastewater. The term " septage" also refers to sludge from simple wastewater treatment but is connected to s ...

(Parts 501 - 503) ( Clean Water Act) *Subchapter Q - Energy Policy (Parts 600 - 610) *Subchapter R -

Toxic Substances Control Act The Toxic Substances Control Act (TSCA) is a United States law, passed by the 94th United States Congress in 1976 and administered by the United States Environmental Protection Agency (EPA), that regulates chemicals not regulated by other U. ...

(TSCA) (Parts 700 - 799) *Subchapter U -

Air Pollution Control Emission standards are the legal requirements governing air pollutants released into the atmosphere. Emission standards set quantitative limits on the permissible amount of specific air pollutants that may be released from specific sources ove ...

s (Parts 1039 - 1068) **

Clean Air Act (1970) The Clean Air Act (CAA) is the United States' primary federal air quality law, intended to reduce and control air pollution nationwide. Initially enacted in 1963 and amended many times since, it is one of the United States' first and most infl ...

Clean Air Act (1990) The Clean Air Act (CAA) is the United States' primary federal air quality law, intended to reduce and control air pollution nationwide. Initially enacted in 1963 and amended many times since, it is one of the United States' first and most inf ...

Chapter IV - Environmental Protection Agency and Department of Justice

(Part 1400)

Chapter V - Council on Environmental Quality

National Environmental Policy Act The National Environmental Policy Act (NEPA) is a United States environmental law that promotes the enhancement of the environment and established the President's Council on Environmental Quality (CEQ). The law was enacted on January 1, 1970.Un ...

implementing regulations (Parts 1500 to 1509) (Parts 1510 - 1518)

Chapter VI -- Chemical Safety and Hazard Investigation Board

(Parts 1600-1620)

Chapter VII -- Environmental Protection Agency and Department of Defense; Uniform National Discharge Standards for Vessels of the Armed Forces

(Part 1700)

References

{{reflist, 30em 40 United States Environmental Protection Agency Environmental law in the United States