Environmental Compliance Inspector Air Quality and Emissions Questions and Answers

Question 1

A city's air monitoring data consistently shows ground-level ozone concentrations above the federal standard. Under the Clean Air Act, what is the most likely regulatory designation for this city, and what major planning requirement does this trigger?

Accepted Answer

Nonattainment Area; this triggers the requirement for a State Implementation Plan (SIP) revision.

Answer

When an area's air quality does not meet a National Ambient Air Quality Standard (NAAQS) for a criteria pollutant like ozone, it is designated as a 'Nonattainment Area'. This designation requires the state to develop and submit a revision to its State Implementation Plan (SIP) that outlines new control strategies and measures to bring the area into compliance with the standard.

Question 2

Under the Clean Air Act, major sources of the 187 listed Hazardous Air Pollutants (HAPs) are required to implement a specific level of emission control. What is this technology-based standard called?

Accepted Answer

Maximum Achievable Control Technology (MACT)

Answer

Section 112 of the Clean Air Act requires major sources of HAPs to meet emission standards that require the maximum degree of reduction achievable. These standards are commonly referred to as Maximum Achievable Control Technology (MACT) standards. BACT and LAER are associated with the New Source Review (NSR) program for criteria pollutants, and RACT is typically for existing sources in nonattainment areas.

Question 3

Which of the following is one of the six "criteria air pollutants" for which the U.S. EPA has established National Ambient Air Quality Standards (NAAQS)?

Accepted Answer

Sulfur Dioxide (SO2)

Answer

The U.S. EPA has set National Ambient Air Quality Standards (NAAQS) for six common pollutants known as criteria air pollutants. These are: ground-level ozone (O3), particulate matter (PM), carbon monoxide (CO), lead (Pb), nitrogen dioxide (NO2), and sulfur dioxide (SO2). Asbestos is a Hazardous Air Pollutant (HAP), while methane and carbon dioxide are primarily regulated as greenhouse gases.

Question 4

An environmental inspector is reviewing the compliance of a large petroleum refinery that is a major source of air pollutants. What type of comprehensive, facility-wide operating permit, which consolidates all applicable Clean Air Act requirements into a single document, is this facility required to obtain?

Accepted Answer

A Title V Operating Permit

Answer

Title V of the Clean Air Act requires major sources of air pollution to obtain a federally enforceable operating permit. This Title V permit consolidates all applicable federal, state, and local air quality requirements into a single, comprehensive document, clarifying the facility's compliance obligations.

Question 5

An inspector is scheduled to conduct a visible emissions evaluation to determine compliance with an opacity limit. What is the standard EPA reference method used by a certified observer for visually determining the opacity of emissions from a stationary source?

Accepted Answer

Method 9

Answer

EPA Reference Method 9 is the standard procedure for trained and certified observers to visually determine the opacity of emissions from stationary sources. It involves taking observations at 15-second intervals over a specified period. Method 5 and 201A are for measuring particulate matter concentration, and Method 22 is for determining the frequency (presence or absence) of visible emissions, not their opacity level.

Environmental Compliance Inspector Practice Test

Environmental Compliance Inspector Practice Test

Environmental Compliance Inspector Air Quality and Emissions Questions and Answers