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Clean Air Act Regulations

Course Code: ENV 302

This course guides environmental professionals through the details and requirements of major Clean Air Act programs—from operating permits to emissions controls to greenhouse gas reporting — and helps prepare you to oversee and maintain site compliance.
US EPA's Clean Air Act is packed with programs, limits, required control methods, and other rules that affect your day-to-day operations in major ways. A full understanding of these Clean Air Act requirements is critical to avoid costly EPA civil penalties. 

Registration includes: 

  • Engaging, interactive Clean Air Act regulations training
  • Trusted EPA compliance resources including key sections of 40 CFR regulations
  • Year-round updates to your course resources and alerts about rule changes
  • 365 days of Lion Membership for complete compliance support
  • Certificate to demonstrate competence with environmental regulations

Clean Air Act Training Topics: 

  • Obtaining and complying with CAA operating permits 
  • Preventing releases and Risk Management Planning (RMP)
  • EPA's acid rain (SO2) cap-and-trade program
  • New Source Review (NSR) for construction and modifications 
  • EPA's National Ambient Air Quality Standards (NAAQS
  • New Source Performance Standards (NSPS)
  • National Emission Standards for Hazardous Air Pollutants (NESHAPS)
  • Responsibilities for managing ozone-depleting substances 
  • Annual Greenhouse Gas (GHG) reporting requirements
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Key Learning Objectives:

  • Identify and meet your responsibilities for Clean Air Act compliance
  • Determine which CAA programs and standards apply to your facility or facilities and what you must monitor, control, and report 
  • Build confidence working with these complex, overlapping air regulations

Online Course Details

Course code ENV 302
Compatible on Desktop, tablet, or mobile
Duration 5 hours
Access time 90 days
Certificate issued Yes

CEUs and Certification Maintenance

CEUs awarded 0.50
Lion Membership           6 months

See how Lion courses can help you maintain your professional credentials.

Why choose online environmental regulations training?

Online training is convenient, cost-effective way to build confidence navigating and working with the complex Clean Air Act. Produced and kept up-to-date by Lion's team of experienced environmental trainers and regulatory experts, the Clean Air Act Regulations Online Course is informative, reliable, and designed for busy EHS professionals.

Online courses are available 24/7 with support available 7 days a week. Our state-of-the-art learning management system gives you access to tools that will enhance your online training experience:
  • Resume your training from where you left off with automatic bookmarking
  • Track your progress with the detailed course status display
  • Get answers to your course content questions from expert instructors
  • Develop your compliance expertise with engaging interactions
  • Test your knowledge with exercises and quizzes on critical topics
  • Access your complete Lion training history at any time

Who takes Clean Air Act training?

EHS managers, compliance officers, environmental engineers, corporate attorneys, and anyone who must understand and/or ensure compliance with the US EPA's Clean Air Act.

Clean Air Act Compliance FAQ

National Ambient Air Quality Standards (NAAQS)

What are EPA's National Ambient Air Quality Standards (NAAQS)?

The Clean Air Act authorizes US EPA to set limits on the volume of certain pollutants, known as “criteria pollutants”, that is acceptable in the ambient air. The six criteria pollutants are: carbon monoxide, lead, nitrogen oxides, sulfur dioxide, particulate matter, and ozone. The current EPA NAAQS can be found at 40 CFR 50.

What do “attainment” and “non-attainment” mean in the Clean Air Act?

For each criteria pollutant regulated by the Clean Air Act NAAQS limits, EPA designates geographic regions of the US—called air quality control regions (AQCRs)—as being “in attainment” or “in non-attainment.”

Simply put, if a region is in attainment, it means the concentration of the pollutant in the ambient is below EPA’s limit. If a region is designated as in non-attainment, it means the concentration of that pollutant is above EPA’s threshold. When a source is located in a non-attainment region, it often means more stringent requirements for controlling air pollution. Check your region! The physical boundaries and current air quality designations for all AQCRs in the US can be found at 40 CFR 81.

New Source Review (NSR)

What is New Source Review (NSR)?

Before constructing a new major source of air pollution or making modifications to an existing major source, owners and/or operators must go through New Source Review (NSR). New Source Review is a pre-construction review program that determines if the proposed emissions control technology installed during construction will be adequate to achieve Clean Air Act NAAQS goals for the region.

What is a “Major Source” under New Source Review?

Identifying a major source relevant to New Source Review depends on whether the new or modified source will be located in an attainment or non-attainment air quality control region. In non-attainment regions, the definition of “major source” is broader, encompassing more sources than would be covered in an attainment region.

New Source Performance Standards 

What are New Source Performance Standards (NSPS)?

New Source Performance Standards requirements are technology-based standards developed by US EPA to control air pollution from affected facilities. The current New Source Performance Standards can be found at 40 CFR Part 60. EPA is authorized to set these standards under Section 111 of the Clean Air Act.

What is an “affected facility” under NSPS?

In this context, “affected facilities” means any apparatus identified in 40 CFR 60 that can emit one or more of the six criteria pollutants. Under the NSPS, sites must monitor emission and/or conduct performance tests to demonstrate compliance. These rules apply to new, modified, or reconstructed apparatuses.

National Emissions Standards for Hazardous Air Pollutants (NESHAPS) 

What are NESHAPs?

Like New Source Performance Standards (NSPS), National Emissions Standards for Hazardous Air Pollutants (NESHAPS) limit how much pollution a given source can emit. However, instead of organizing the limits based on the criteria pollutants, EPA assigns NESHAPS based on a broader category: Hazardous Air Pollutants (HAPs). NESHAPs require specific technologies and controls be applied to specific equipment to prevent the pollution emitted from that equipment from exceeding EPA’s thresholds. The NESHAPs can be found at 40 CFR 61 and 63.

Greenhouse Gases and Ozone-depleting Substances

Who is subject to annual Clean Air Act Greenhouse Gas (GHG) Reporting?

Since 2012, certain facilities that emit greenhouse gases must submit a mandatory annual report under the Clean Air Act. The thresholds for greenhouse gas reporting are assigned based on industry (see 40 CFR 98). Facilities in certain industries—like electricity generation, petrochemical production, and municipal landfills—must report every year, regardless of their greenhouse gas emission levels. Other sources must report if they exceed a specified amount of carbon dioxide (CO2) equivalent emissions. As of December 2013, all Clean Air Act greenhouse gas reporting must be done through EPA’s web portal, the Electronic Greenhouse Gas Reporting Tool, or e-GGRT.

What are Ozone-Depleting Substances and how are they regulated?

Ozone-depleting substances (ODS) are chemicals that have a deleterious effect on the stratospheric ozone layer. Since the United States became a signatory to the Montreal Protocol in 1987, EPA has regulated the production, import, consumption, use, destruction, and recycling of these chemicals. The ultimate goal is the complete phase-out of production of ODS in accordance with the Protocol’s time lines. Under the Clean Air Act, ODS are divided into two designations: Class I and Class II, listed at 40 CFR 82, Appendices A and B. Production of Class I ODS was phased out in January 2000, while Class II ODS are on schedule to be phased out by January 2030.

Clean Air Act Risk Management Plans (RMPs)

Who must submit a Risk Management Plan (RMP) under the Clean Air Act?

US EPA’s Clean Air Act Risk Management Plan (RMP) requirements, found at 40 CFR 68, apply to stationary sources that have certain flammable or toxic chemicals, in certain amounts, at any time in a single process. The plans are intended to help reduce the risks of a catastrophic release and minimize the consequences if and when an incident occurs.

What chemical substances are covered under the Clean Air Act RMP rules?

The specific chemical substances subject to RMP requirements, and their corresponding volume thresholds, can be found in the four tables at 40 CFR 68.130.
  • Tables 1 and 2 list the regulated “toxic” substances (based on the EPCRA extremely hazardous substance criteria).
  • Tables 3 and 4 list the regulated “flammable” substances.
What is a “stationary source” under the Clean Air Act RMP rules?
The Clean Air Act RMP requirements define a stationary source as a place or object from which pollutants are released and which does not move (e.g., power plants, gas stations, incinerators). A mobile source, on the other hand, typically refers to an automobile or other fuel-burning vehicle.

What is a “single process” under the Clean Air Act RMP rules?

A single process, as defined in the RMP regulations, means the use, storage, manufacture, handling, or movement of a hazardous substance. If any of these activities require a chemical to pass through multiple interconnected vessels, all of the interconnected vessels are considered to be part of the same single process. In fact, even when separated vessels are used, the vessels may be considered part of the same single process under the RMP rules, if a release from one vessel could affect the operations of another. [40 CFR 68.3]

What’s required in a Clean Air Act Risk Management Plan (RMP)?

A Risk Management Plan must be certified by the operators of the stationary source, must be reviewed at least every 5 years, and must include descriptions of the following:
  • The site, the covered process, and the covered substances,
  • The process’ five-year accident history,
  • The process’ hazard assessment,
  • A worst-case release scenario, and
  • The process’ prevention and emergency response programs.

Acid Rain

What is acid rain?

When fossil fuels are burned, hazardous chemicals like sulfur dioxide and nitrogen oxides rise into the air, lowering the pH of the moisture in the atmosphere When these pollutants return to earth in the form of precipitation (rain, snow, fog), that’s called acid rain.

Who must comply with the Clean Air Act acid rain rules?

The Clean Air Act Amendments of 1990 authorized US EPA to take steps to control acid rain. Owners and operators of affected “units” must comply with the acid rain permit rules found at 40 CFR 72. A unit in this context means an individual combustion device—a boiler, furnace, combustion turbine, engine, etc. Power plants—the #1 target of EPA’s acid rain program—often house more than one affected unit per plant. A big part of EPA’s acid rain program is cap-and-trade, a system that allows facilities to transfer pollution rights to one another. Each allowance obtained through trade is an authorization from EPA to emit up to 1 ton of sulfur dioxide.