Air Quality Regulations (CAA) Flashcards

A chemical manufacturing facility is planning a major modification that will significantly increase its emissions of a regulated air pollutant. Under the Clean Air Act, which program directly requires this facility to obtain a permit before construction and install the Best Available Control Technology (BACT)?

Answer: New Source Review (NSR)

The New Source Review (NSR) program under the Clean Air Act requires new or modified major stationary sources of air pollution to obtain a permit before construction begins. This process ensures that facilities install modern pollution control equipment, such as the Best Available Control Technology (BACT), to minimize emissions increases.

Which of the following are all considered 'criteria' air pollutants regulated under the National Ambient Air Quality Standards (NAAQS)?

Answer: Ground-level Ozone, Particulate Matter, Lead, and Sulfur Dioxide

The EPA has established National Ambient Air Quality Standards (NAAQS) for six principal pollutants known as 'criteria' pollutants: ground-level ozone, particulate matter (PM2.5 and PM10), lead, sulfur dioxide (SO2), nitrogen dioxide (NO2), and carbon monoxide (CO). These pollutants are widespread and can cause harm to public health and the environment.

A facility has the potential to emit 12 tons per year of a single Hazardous Air Pollutant (HAP) and 28 tons per year of a combination of HAPs. According to the Clean Air Act, how would this facility be classified?

Answer: A major source

Under the Clean Air Act, a major source is defined as a facility that has the potential to emit 10 tons per year or more of any single Hazardous Air Pollutant (HAP) or 25 tons per year or more of any combination of HAPs. Since this facility exceeds both thresholds, it is classified as a major source.

The 1990 Clean Air Act Amendments introduced a cap-and-trade program primarily to address which environmental problem?

Answer: Acid rain

A key feature of the 1990 Clean Air Act Amendments was the establishment of the Acid Rain Program under Title IV. This program set a cap on total sulfur dioxide (SO2) emissions from power plants and created a market-based cap-and-trade system of allowances to reduce SO2 and nitrogen oxide (NOx) emissions, the primary precursors of acid rain.

A new industrial facility is being built that falls into a source category for which the EPA has established specific, technology-based emission standards. Which Clean Air Act program sets these national, uniform standards for new and modified stationary sources?

Answer: New Source Performance Standards (NSPS)

New Source Performance Standards (NSPS) are technology-based standards issued by the EPA for specific categories of new, modified, and reconstructed stationary sources. These standards establish the minimum level of pollution control, known as the 'best demonstrated technology,' that must be achieved by facilities in that source category.

What is the primary purpose of the Title V Operating Permit Program established by the Clean Air Act Amendments of 1990?

Answer: To consolidate all applicable air quality regulations for a major source into a single, legally enforceable document.

The Title V Operating Permit Program was created to consolidate all applicable federal, state, and local air quality requirements into a single permit document for major sources of air pollution. This clarifies a source's compliance obligations and enhances the ability of regulatory agencies to enforce the Clean Air Act. It does not, by itself, impose new substantive emission limits.